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Rijksmuseum Boerhaave is a museum of the
history of science The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Science's earliest roots can be traced to Ancient Egypt and Meso ...
and medicine, based in
Leiden Leiden (; in English and archaic Dutch also Leyden) is a city and municipality in the province of South Holland, Netherlands. The municipality of Leiden has a population of 119,713, but the city forms one densely connected agglomeration wit ...
, Netherlands. The museum hosts a collection of historical
scientific instrument A scientific instrument is a device or tool used for scientific purposes, including the study of both natural phenomena and theoretical research. History Historically, the definition of a scientific instrument has varied, based on usage, laws, an ...
s from all disciplines, but mainly from
medicine Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care pract ...
,
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
, and
astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...
. The museum is located in a building that was originally a convent in central Leiden. It includes a reconstructed traditional
anatomical theatre An anatomical theatre (Latin: ) was a specialised building or room, resembling a theatre, used in teaching anatomy at early modern universities. They were typically constructed with a tiered structure surrounding a central table, allowing a lar ...
. It also has many galleries that include the apparatus with which
Heike Kamerlingh Onnes Heike Kamerlingh Onnes (21 September 1853 – 21 February 1926) was a Dutch physicist and Nobel laureate. He exploited the Hampson–Linde cycle to investigate how materials behave when cooled to nearly absolute zero and later to liquefy heliu ...
first liquefied
helium Helium (from el, ἥλιος, helios, lit=sun) is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. ...
(in Leiden), the electromagnet equipment used by
Wander Johannes de Haas Wander Johannes de Haas (2 March 1878 – 26 April 1960) was a Dutch physicist and mathematician. He is best known for the Shubnikov–de Haas effect, the De Haas–Van Alphen effect and the Einstein–de Haas effect. Personal life Wander de H ...
(a Leiden physicist) for his low-temperature research, and an example of the Leiden jar, among many other objects in the extensive collection. The museum is named after
Herman Boerhaave Herman Boerhaave (, 31 December 1668 – 23 September 1738Underwood, E. Ashworth. "Boerhaave After Three Hundred Years." ''The British Medical Journal'' 4, no. 5634 (1968): 820–25. https://www.jstor.org/stable/20395297.) was a Dutch botanist, ...
, A Dutch physician and botanist who was famous in Europe for his teaching at
Leiden Leiden (; in English and archaic Dutch also Leyden) is a city and municipality in the province of South Holland, Netherlands. The municipality of Leiden has a population of 119,713, but the city forms one densely connected agglomeration wit ...
and lived to a great age, receiving brilliant students from all over Europe, including
Peter the Great Peter I ( – ), most commonly known as Peter the Great,) or Pyotr Alekséyevich ( rus, Пётр Алексе́евич, p=ˈpʲɵtr ɐlʲɪˈksʲejɪvʲɪtɕ, , group=pron was a Russian monarch who ruled the Tsardom of Russia from t ...
,
Voltaire François-Marie Arouet (; 21 November 169430 May 1778) was a French Age of Enlightenment, Enlightenment writer, historian, and philosopher. Known by his ''Pen name, nom de plume'' M. de Voltaire (; also ; ), he was famous for his wit, and his ...
and
Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...
.


History

Boerhaave Museum's history began in 1907, when a Historical Exhibition of Natural Science and Medicine was held in the Academy Building Academiegebouw (Leiden) of
Leiden University Leiden University (abbreviated as ''LEI''; nl, Universiteit Leiden) is a Public university, public research university in Leiden, Netherlands. The university was founded as a Protestant university in 1575 by William the Silent, William, Prince o ...
. The many objects in the exhibition came from all the learned corners of the country. It was a great success and there were immediately calls to set up a permanent science history exhibit. In 1928 a foundation was initiated by physicist Claude August Crommelin, who worked at Leiden university, for a museum for the history of natural sciences. The aim of the museum was described in the preliminary statutes of the foundation: "the collection of instruments, tools, slides and specimens, documents and other objects, which are important for the history of the natural sciences; to look after these objects, describe them and keep them in a museum which is to be located in Leiden". The sciences to be represented included:
Astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...
,
Physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
,
Chemistry Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
,
Botany Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek w ...
,
Zoology Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological clas ...
,
Pharmacy Pharmacy is the science and practice of discovering, producing, preparing, dispensing, reviewing and monitoring medications, aiming to ensure the safe, effective, and affordable use of medicines. It is a miscellaneous science as it links heal ...
, all
medical sciences Medicine is the science and practice of caring for a patient, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care practice ...
– including
Physiology Physiology (; ) is the scientific study of functions and mechanisms in a living system. As a sub-discipline of biology, physiology focuses on how organisms, organ systems, individual organs, cells, and biomolecules carry out the chemical ...
,
Anatomy Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its ...
et cetera, and
Mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
. In 1931 the museum opened as "The Dutch Historical Museum of the Natural Sciences" (''Het Nederlandsch Historisch Natuurwetenschappelijk Museum''). To the view of Crommelin, the museum was to become a national museum: the 's Gravesande-Musschenbroek collection would form the starting point, to which collections from other institutes were to be added. In 1947 the museum, which was in fact a private foundation, became formally a
national museum A national museum is a museum maintained and funded by a national government. In many countries it denotes a museum run by the central government, while other museums are run by regional or local governments. In other countries a much greater numb ...
. It was renamed to "The Dutch National Museum for the History of the Natural Sciences" (''Rijksmuseum voor de Geschiedenis van Natuurwetenschappen''). An advisory board was installed in which members of Dutch universities would take seat. It underlined the ambition to become a national museum, not a museum solely connected to the Leiden University. Before moving in 1991, the museum was located in the former Boerhaave Laboratory at the Steenstraat 1, Leiden, a building which belonged to the Leiden Academic Hospital (''Leiden Academisch Hospital''), now part of LUMC,
Leiden University Medical Center Leiden University Medical Center (Dutch: ''Leids Universitair Medisch Centrum'') or LUMC is the university hospital affiliated with Leiden University, of which it forms the medical faculty. It is located in Leiden, Netherlands. LUMC is a modern un ...
. This location of the museum now houses the National Museum of Ethnology. To create better housing the former
nunnery A convent is a community of monks, nuns, religious brothers or, sisters or priests. Alternatively, ''convent'' means the building used by the community. The word is particularly used in the Catholic Church, Lutheran churches, and the Anglican C ...
of
Saint Cecilia Saint Cecilia ( la, Sancta Caecilia), also spelled Cecelia, was a Roman virgin martyr and is venerated in Catholic, Eastern Orthodox Church, Orthodox, Anglican Communion, Anglican, and some Lutheran churches, such as the Church of Sweden. She b ...
was bought by the Government Buildings Agency ( Rijksgebouwendienst). This historic building has had various functions over time. The building dates from the early 15th century. The building had become municipal property after the
Protestant Reformation The Reformation (alternatively named the Protestant Reformation or the European Reformation) was a major movement within Western Christianity in 16th-century Europe that posed a religious and political challenge to the Catholic Church and in ...
and shortly before 1600 was converted into a
pest house A pest house, plague house, pesthouse or fever shed was a type of building used for persons afflicted with communicable diseases such as tuberculosis, cholera, smallpox or typhus. Often used for forcible quarantine, many towns and cities had on ...
and
lunatic asylum The lunatic asylum (or insane asylum) was an early precursor of the modern psychiatric hospital. The fall of the lunatic asylum and its eventual replacement by modern psychiatric hospitals explains the rise of organized, institutional psychiatr ...
. The Leiden Academic hospital was founded in this location between 1636 and 1639. In 1967, with the prospect of a new location the name of the museum was changed to "Museum Boerhaave". However, it took more than twenty years before the museum finally moved. After extensive restoration and expansion, the building is in use as a museum since 1991. Rijksmuseum Boerhaave was elected European Museum of the Year 2019. Founded in 1977, this is the oldest and most prestigious museum award in Europe. The international jury praised the completely renewed science and medicine museum in Leiden: "The exceptional public quality of this museum results from its artful approach to communicating science.  Important and beautiful objects are interpreted using the latest technologies and the personal stories of those driven by a passion for the pursuit of knowledge.  The result is science with a human face, inspiring curiosity and amazement as well as engaging a wide public in debates on important scientific and ethical questions issues of our time." ImageSize = width:750 height:autoscale barincrement:40 PlotArea = left:55 right:10 bottom:23 top:10 AlignBars = justify Colors = id:name value:rgb(0.9,0.9,0.9) # id:institute1 value:rgb(0.9,0.5,0.5) # id:institute2 value:rgb(1,0.5,0.5) id:institute1 value:rgb(0.5,0.5,0.8) id:institute2 value:rgb(0.5,0.5,1) id:location1 value:rgb(0.5,0.7,0.5) id:location2 value:rgb(0.5,0.8,0.5) id:lightgrey value:rgb(0.9,0.9,0.9) id:black value:black id:white value:white id:red value:rgb(0.7,0,0) BackgroundColors = canvas:lightgrey Period = from:1928 till:2016 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:10 start:1930 ScaleMinor = unit:year increment:1 start:1928 BarData = bar:Name text:Name bar:Institute text:Institute bar:Location text:Location PlotData= align:left textcolor:black fontsize:8 mark:(line,black) width:25 bar:Name from:start till:end color:name at: 1928 shift:(4,4) text: The Dutch Museum of the at: 1928 shift:(4,-8) text: History of Natural Sciences at: 1947 shift:(4,4) text:The Dutch National Museum for the History of the Natural Sciences aka textcolor:red at: 1947 shift:(4,-8) text:Rijksmuseum Boerhaave align:center textcolor:black fontsize:9 shift:(0,-5) bar:Institute from: 1928 till:1947 color:institute1 text:Private Foundation from: 1947 till:end color:institute2 text:National Museum bar:Location from: 1931 till:1991 color:location1 text:Steenstraat 1 from: 1991 till:end color:location2 fontsize:8 text:Lange Sint Agnietenstraat 10


Collection

The Boerhaave Museum is running a project to document approx. 3000 objects in its collection online, with pictures and descriptions for every single object. In April 2010 the site featured over 1750 objects, ordered by room and showcase. This overview is in large part based on the museum's online documentation. The museum has 25 galleries, which are by and large organised chronologically, with thematical subgroupings per gallery.


16th–17th century

;0 Museum Foyer
Gaper A gaper (Dutch pronunciation: ɣaːpər is a stone or wooden figurehead, often depicting a Moor, Muslim, or North African. The figurehead first appeared in the late 16th century as a hangout sign used outside the storefronts of drug stores ...
s (wooden heads miming the swallowing of pills) and other shop signs for
pharmacies Pharmacy is the science and practice of discovering, producing, preparing, dispensing, reviewing and monitoring medications, aiming to ensure the safe, effective, and affordable use of medicines. It is a miscellaneous science as it links healt ...
and
druggist A pharmacist, also known as a chemist (Commonwealth English) or a druggist (North American and, archaically, Commonwealth English), is a healthcare professional who prepares, controls and distributes medicines and provides advice and instructi ...
s. Also a 'dictionary of health': a tall book-shaped wooden chest (1660) filled with
simple Simple or SIMPLE may refer to: *Simplicity, the state or quality of being simple Arts and entertainment * ''Simple'' (album), by Andy Yorke, 2008, and its title track * "Simple" (Florida Georgia Line song), 2018 * "Simple", a song by Johnn ...
s (basic substances used in medicine). ;1 Leiden Anatomical Theater The room shows a reconstruction (1988) of the Theatrum Anatomicum (
anatomical theatre An anatomical theatre (Latin: ) was a specialised building or room, resembling a theatre, used in teaching anatomy at early modern universities. They were typically constructed with a tiered structure surrounding a central table, allowing a lar ...
) (built 1596). A richly decorated instrument chest (1670) which belonged to the Leiden
surgeon In modern medicine, a surgeon is a medical professional who performs surgery. Although there are different traditions in different times and places, a modern surgeon usually is also a licensed physician or received the same medical training as ...
's
guild A guild ( ) is an association of artisans and merchants who oversee the practice of their craft/trade in a particular area. The earliest types of guild formed as organizations of tradesmen belonging to a professional association. They sometimes ...
. A small collection of objects (largely Egyptian antiquities) that survived from the now gone Leiden Theatrum (one of the oldest museums of Europe ) are shown as well. On the wall three paintings: one depicting the magistrates of the Catharina and Caecilia Hospitals (the latter now houses the museum), a second showing a Prussian peasant from whom a 10-inch sword, swallowed in a drinking bout, has surgically been removed, a third showing renowned surgeon and designer of medical instruments Cornelis Solingen (1680). One of Solingen's inventions (part of the collection) was a screw to unindent a soldiers skull who had been hit by a bullet. Often in those days bullets did not fully penetrate a skull, merely deformed it. ;2 Drawn from life Four large
allegoric As a literary device or artistic form, an allegory is a narrative or visual representation in which a character, place, or event can be interpreted to represent a hidden meaning with moral or political significance. Authors have used allegory th ...
paintings (± 1610) show in stages how the appreciation of a patient for his physician declines, from being a true savior when the illness is at its height, towards being a
devil A devil is the personification of evil as it is conceived in various cultures and religious traditions. It is seen as the objectification of a hostile and destructive force. Jeffrey Burton Russell states that the different conceptions of t ...
when the bill has been delivered. Three solid figures of
Saints Cosmas and Damian Cosmas and Damian ( ar, قُزما ودميان, translit=Qozma wa Demyaan; grc-gre, Κοσμᾶς καὶ Δαμιανός, translit=Kosmás kai Damianós; la, Cosmas et Damianus; AD) were two Arab physicians in the town Cyrrhus, and were r ...
, patrons of doctors and pharmacists. Six
anatomical Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having it ...
books and drawings (1520–1570) and six books on
herbs In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal ...
(1480–1590) testify how in the
Renaissance The Renaissance ( , ) , from , with the same meanings. is a period in European history marking the transition from the Middle Ages to modernity and covering the 15th and 16th centuries, characterized by an effort to revive and surpass ideas ...
there was an urge to study life diligently and not take traditional beliefs for granted. A large collection of baked and painted apothecary jars (1550–1650) and (often ornamented) cast-iron and bronze mortars (1350–1700). ;3 The Golden Age


18th century

The following two rooms are dedicated to an era of blossom for the
University of Leiden Leiden University (abbreviated as ''LEI''; nl, Universiteit Leiden) is a public research university in Leiden, Netherlands. The university was founded as a Protestant university in 1575 by William, Prince of Orange, as a reward to the city of Le ...
, the oldest university of the Netherlands (founded in 1575). ;4 University of Leiden: Boerhaave and ‘s Gravensande This large room is dedicated to physician, botanist and chemist
Herman Boerhaave Herman Boerhaave (, 31 December 1668 – 23 September 1738Underwood, E. Ashworth. "Boerhaave After Three Hundred Years." ''The British Medical Journal'' 4, no. 5634 (1968): 820–25. https://www.jstor.org/stable/20395297.) was a Dutch botanist, ...
, physicist
Willem 's Gravesande Willem Jacob 's Gravesande (26 September 1688 – 28 February 1742) was a Dutch mathematician and natural philosopher, chiefly remembered for developing experimental demonstrations of the laws of classical mechanics and the first experimental m ...
and instrument-maker Jan van Musschenbroeck. On display are large
globe A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to maps, but unlike maps, they do not distort the surface that they portray except to scale it down. A model globe ...
s and a tiny pocket globe (all ~1700), each depicting heaven and earth. A table size planetarium by clock-maker Steven Tracy Mercury shows Venus, Earth with its moon, Mars, Jupiter with four moons and Saturn. There is also a large
star atlas Celestial cartography, uranography, astrography or star cartography is the aspect of astronomy and branch of cartography concerned with mapping stars, galaxies, and other astronomical objects on the celestial sphere. Measuring the position ...
. Air pumps (1670–1730) and demonstration devices, notably several Magdeburg hemispheres, were made to explore the properties of the newly discovered
vacuum A vacuum is a space devoid of matter. The word is derived from the Latin adjective ''vacuus'' for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often dis ...
. Other devices did the same for
centrifugal force In Newtonian mechanics, the centrifugal force is an inertial force (also called a "fictitious" or "pseudo" force) that appears to act on all objects when viewed in a rotating frame of reference. It is directed away from an axis which is paralle ...
,
collision In physics, a collision is any event in which two or more bodies exert forces on each other in a relatively short time. Although the most common use of the word ''collision'' refers to incidents in which two or more objects collide with great fo ...
s and laws of
momentum In Newtonian mechanics, momentum (more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction. If is an object's mass an ...
, and
gravity In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the stro ...
.
Hydrometer A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity. A hydrometer ...
s, an
aerometer An aerometer is an instrument designed to measure the density (among other parameters) of the air and some gases. The word aerometer (or Ärometer, from Ancient Greek ἀήρ -aer "air" and μέτρον -métron "measure, scale") refers to various ...
, a hydrostatic
bellows A bellows or pair of bellows is a device constructed to furnish a strong blast of air. The simplest type consists of a flexible bag comprising a pair of rigid boards with handles joined by flexible leather sides enclosing an approximately airtigh ...
, a
balance Balance or balancing may refer to: Common meanings * Balance (ability) in biomechanics * Balance (accounting) * Balance or weighing scale * Balance as in equality or equilibrium Arts and entertainment Film * ''Balance'' (1983 film), a Bulgaria ...
and steam pump, several table-top
fountain A fountain, from the Latin "fons" (genitive "fontis"), meaning source or Spring (hydrology), spring, is a decorative reservoir used for discharging water. It is also a structure that jets water into the air for a decorative or dramatic effect. ...
s all were used to look into
hydrostatic pressure Fluid statics or hydrostatics is the branch of fluid mechanics that studies the condition of the equilibrium of a floating body and submerged body "fluids at hydrostatic equilibrium and the pressure in a fluid, or exerted by a fluid, on an imme ...
, and
capillary attraction Capillary action (sometimes called capillarity, capillary motion, capillary rise, capillary effect, or wicking) is the process of a liquid flowing in a narrow space without the assistance of, or even in opposition to, any external forces l ...
. Also shown are a large set of mathematical instruments to measure angles:
sector Sector may refer to: Places * Sector, West Virginia, U.S. Geometry * Circular sector, the portion of a disc enclosed by two radii and a circular arc * Hyperbolic sector, a region enclosed by two radii and a hyperbolic arc * Spherical sector, a po ...
s, a
protractor A protractor is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Some protractors are simple half-discs or full circles. More advanced protractors, such as the bevel protractor, have one or two sw ...
and
beam compass A beam compass is a compass with a beam and sliding sockets or cursors for drawing and dividing circles larger than those made by a regular pair of compasses. The instrument can be as a whole, or made on the spot with individual sockets (called ...
. A collection of
balance Balance or balancing may refer to: Common meanings * Balance (ability) in biomechanics * Balance (accounting) * Balance or weighing scale * Balance as in equality or equilibrium Arts and entertainment Film * ''Balance'' (1983 film), a Bulgaria ...
s,
lever A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or ''fulcrum''. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is div ...
s, tackles demonstrate laws of
statics Statics is the branch of classical mechanics that is concerned with the analysis of force and torque (also called moment) acting on physical systems that do not experience an acceleration (''a''=0), but rather, are in static equilibrium with ...
. A variety of
lens A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), ...
es,
prism Prism usually refers to: * Prism (optics), a transparent optical component with flat surfaces that refract light * Prism (geometry), a kind of polyhedron Prism may also refer to: Science and mathematics * Prism (geology), a type of sedimentary ...
s, a slit, trays and screens explore
optics Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviole ...
. About ten screw-barrel and compound
microscope A microscope () is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisibl ...
s (1710–1780) demonstrate how this young science underwent dramatic progress in few years. A variety of curved mirrors, used as
anamorphic Anamorphic format is the cinematography technique of shooting a widescreen picture on standard 35 mm film or other visual recording media with a non-widescreen native aspect ratio. It also refers to the projection format in which a distorted ...
toys, show how a deliberately distorted image can be restored back to the original. The room also houses a range of instruments (
lever A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or ''fulcrum''. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is div ...
s and
forceps Forceps (plural forceps or considered a plural noun without a singular, often a pair of forceps; the Latin plural ''forcipes'' is no longer recorded in most dictionaries) are a handheld, hinged instrument used for grasping and holding objects. Fo ...
) used to facilitate childbirth. Lastly, shown are models of three out of five of
Archimedes Archimedes of Syracuse (;; ) was a Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily. Although few details of his life are known, he is regarded as one of the leading scientists ...
' so called ''simple machines'' (lever, inclined plane, wedge, screw and wheel), several
hydrostatic balance In fluid mechanics, hydrostatic equilibrium (hydrostatic balance, hydrostasy) is the condition of a fluid or plastic solid at rest, which occurs when external forces, such as gravity, are balanced by a pressure-gradient force. In the planetary ...
s to demonstrate Archimedes' law and two ''tables of forces'' which demonstrate interactions of forces in a horizontal plane. ;5 The University of Leiden: Linnaeus and Van Musschenbroek
Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...
published his famous ''
Systema Naturae ' (originally in Latin written ' with the ligature æ) is one of the major works of the Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the system, now known as binomial nomen ...
'' in 1735, during his 3-year stay in the Dutch Republic, in which he also earned a degree in medicine, and closely worked together with Boerhaave. At display are paintings of Linnaeus and Boerhaave. Also 18th-century models and scientific measuring instruments: models that demonstrate basic
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...
principles, and instruments: several antique
thermometer A thermometer is a device that temperature measurement, measures temperature or a temperature gradient (the degree of hotness or coldness of an object). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a merc ...
s, a
barometer A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis ...
, a
theodolite A theodolite () is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is also used extensively for building and i ...
and several
pyrometer A pyrometer is a type of remote-sensing thermometer used to measure the temperature of distant objects. Various forms of pyrometers have historically existed. In the modern usage, it is a device that from a distance determines the temperature of ...
s. Also two antique
globe A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to maps, but unlike maps, they do not distort the surface that they portray except to scale it down. A model globe ...
s (one showing the heavens, one earth) and two mirror telescopes. The room is conamed after the brothers van Mussenbroeck:
Pieter Pieter is a male given name, the Dutch form of Peter. The name has been one of the most common names in the Netherlands for centuries, but since the mid-twentieth century its popularity has dropped steadily, from almost 3000 per year in 1947 ...
a professor, credited with the invention of the first
capacitor A capacitor is a device that stores electrical energy in an electric field by virtue of accumulating electric charges on two close surfaces insulated from each other. It is a passive electronic component with two terminals. The effect of ...
in 1746: the
Leyden jar A Leyden jar (or Leiden jar, or archaically, sometimes Kleistian jar) is an electrical component that stores a high-voltage electric charge (from an external source) between electrical conductors on the inside and outside of a glass jar. It typi ...
, and
Jan Jan, JaN or JAN may refer to: Acronyms * Jackson, Mississippi (Amtrak station), US, Amtrak station code JAN * Jackson-Evers International Airport, Mississippi, US, IATA code * Jabhat al-Nusra (JaN), a Syrian militant group * Japanese Article Num ...
a famous instrument maker, who shipped his hand crafted precision thermometers all over Europe. ;6 Wonders of nature Over 30 antique
microscope A microscope () is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisibl ...
s are shown, most from the 18th century, in a large variety, with different solutions for lighting the subject and minimization of lens defects (e.g.
chromatic aberration In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the wave ...
): simple, compound and reflecting microscopes, so called English microscopes (renowned for their quality), solar microscopes (which project their image on a wall, using sunlight only). Several wooden cabinets with microscopic slides are testimony of the craftsmanship than went into collections of ready made samples, which at the time were highly fashionable among well-to-do citizens who took an interest in scientific developments. ;7 Collection: The Albinus Brothers The room is dedicated to famous 18th-century anatomist
Bernhard Siegfried Albinus Bernhard Siegfried Albinus (originally Weiss; 24 February 16979 September 1770) was a German-born Dutch anatomist. He served a professor of medicine at the University of Leiden like his father Bernhard Albinus (1653–1721). He also published ...
and his brother and successor Frederik Bernhard Albinus, showing a few of the over 750 wet and dry anatomical samples that Bernhard Siegfried collected, and a wide variety of medical instruments (most 1670–1700) collected by his brother: several
amputation Amputation is the removal of a limb by trauma, medical illness, or surgery. As a surgical measure, it is used to control pain or a disease process in the affected limb, such as malignancy or gangrene. In some cases, it is carried out on indi ...
saws and knives, cauterizing irons, a wide variety of
forceps Forceps (plural forceps or considered a plural noun without a singular, often a pair of forceps; the Latin plural ''forcipes'' is no longer recorded in most dictionaries) are a handheld, hinged instrument used for grasping and holding objects. Fo ...
and
clamps Clamp may refer to: Tools and devices *Brick clamp, an early method of baking bricks *Clamp (tool), a device or tool used to hold objects in a fixed relative position (many types listed) ** C-clamp ** C-clamp (stagecraft) **Riser clamp, a device ...
, spatula's, an elevator, a
bullet A bullet is a kinetic projectile, a component of firearm ammunition that is shot from a gun barrel. Bullets are made of a variety of materials, such as copper, lead, steel, polymer, rubber and even wax. Bullets are made in various shapes and co ...
extractor and
brace Brace(s) or bracing may refer to: Medical * Orthopaedic brace, a device used to restrict or assist body movement ** Back brace, a device limiting motion of the spine *** Milwaukee brace, a kind of back brace used in the treatment of spinal cur ...
, several (drill) crowns, two
drills A drill is a tool used for making round holes or driving fasteners. It is fitted with a bit, either a drill or driverchuck. Hand-operated types are dramatically decreasing in popularity and cordless battery-powered ones proliferating due to i ...
, a lenticular, several elevatoriums, a chuck key, a
coach screw A screw and a bolt (see '' Differentiation between bolt and screw'' below) are similar types of fastener typically made of metal and characterized by a helical ridge, called a ''male thread'' (external thread). Screws and bolts are used to fa ...
, a retractor,
lithotomy Lithotomy from Greek for "lithos" (stone) and "tomos" ( cut), is a surgical method for removal of calculi, stones formed inside certain organs, such as the urinary tract (kidney stones), bladder ( bladder stones), and gallbladder (gallstones), ...
scoop Scoop, Scoops or The scoop may refer to: Objects * Scoop (tool), a shovel-like tool, particularly one deep and curved, used in digging * Scoop (machine part), a component of machinery to carry things * Scoop stretcher, a device used for casualt ...
s, a
Phimosis Phimosis (from Greek φίμωσις ''phimōsis'' 'muzzling'.) is a condition in which the foreskin of the penis cannot stretch to allow it to be pulled back past the glans. A balloon-like swelling under the foreskin may occur with urination. In ...
knife, gorgerets, a
catheter In medicine, a catheter (/ˈkæθətər/) is a thin tube made from medical grade materials serving a broad range of functions. Catheters are medical devices that can be inserted in the body to treat diseases or perform a surgical procedure. Cath ...
, a bistoury cache, a combined syringotome and seton needle, a wound retractor,
lithotomy Lithotomy from Greek for "lithos" (stone) and "tomos" ( cut), is a surgical method for removal of calculi, stones formed inside certain organs, such as the urinary tract (kidney stones), bladder ( bladder stones), and gallbladder (gallstones), ...
directors, probes, a tobacco
enema An enema, also known as a clyster, is an injection of fluid into the lower bowel by way of the rectum.Cullingworth, ''A Manual of Nursing, Medical and Surgical'':155 The word enema can also refer to the liquid injected, as well as to a device ...
;8 Collection: Sebaldus Justinus Brugmans
Sebald Justinus Brugmans Sebald Justinus Brugmans (24 March 1763, Franeker – 22 July 1819, Leiden) was a Dutch botanist and physician. He was the son of naturalist Anton Brugmans (1732-1789). Brugmans studied philosophy, mathematics and physics at the Universities ...
was a Dutch botanist,
physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...
and professor of natural sciences. As an army physician he became notable for his battle against unsanitary conditions, and spread of contagious diseases. The room shows a large collection of fish skins ('the protected body'),
human skull The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, the ...
s (some affected by accident or disease), animal skulls (mainly birds) and a variety of other anatomic samples, including some
foetus A fetus or foetus (; plural fetuses, feti, foetuses, or foeti) is the unborn offspring that develops from an animal embryo. Following embryonic development the fetal stage of development takes place. In human prenatal development, fetal develo ...
es in a jar. ;10 Hendrik Bosch's collection of medicine, Butterfly cabinet The room houses a large
simple Simple or SIMPLE may refer to: *Simplicity, the state or quality of being simple Arts and entertainment * ''Simple'' (album), by Andy Yorke, 2008, and its title track * "Simple" (Florida Georgia Line song), 2018 * "Simple", a song by Johnn ...
s
cabinet Cabinet or The Cabinet may refer to: Furniture * Cabinetry, a box-shaped piece of furniture with doors and/or drawers * Display cabinet, a piece of furniture with one or more transparent glass sheets or transparent polycarbonate sheets * Filing ...
(1760), from Amsterdam physician Hendrik Bosch. Also a large cabinet with butterflies (1760) (content lost) from Christiaan Sepp and son, who published a work on butterflies and insects in several volumes (1762–1860).


19th century

;9 Collection: Nature in drawers and cabinets A large collection of shells. Four book shaped boxes (1809), out of a collection of 150, each box made of wood of a particular tree or shrub and filled with its wood, leaves, seeds and fruits. Also on display cases with
butterflies Butterflies are insects in the macrolepidopteran clade Rhopalocera from the Order (biology), order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The ...
and
beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...
s. Lastly a portrait of Abraham Nieuwland (1780). ;11 Collection: Theodoor Gerard van Lidth de Jeude Shown are a collection of 19th century animal organ specimens (protected against decay with wax and varnish) which had been prepared for research (e.g.
comparative anatomy Comparative anatomy is the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny (the evolution of species). The science began in the classical era, continuing in t ...
), and educational purposes (e.g.
veterinarian A veterinarian (vet), also known as a veterinary surgeon or veterinary physician, is a medical professional who practices veterinary medicine. They manage a wide range of health conditions and injuries in non-human animals. Along with this, vet ...
school). Also shown are anatomical drawings from that same period. Many specimens and drawings are from large mammals, cattle but even more large mammals of non European origin. ;12 Collection: Repositories of the animal kingdom The room shows
wax Waxes are a diverse class of organic compounds that are lipophilic, malleable solids near ambient temperatures. They include higher alkanes and lipids, typically with melting points above about 40 °C (104 °F), melting to giv ...
models of human and animal
brain A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a v ...
s (1850–1870), prepared for educational purposes. Also display boxes with carefully arranged human hand bones and foot bones, and several
skeleton A skeleton is the structural frame that supports the body of an animal. There are several types of skeletons, including the exoskeleton, which is the stable outer shell of an organism, the endoskeleton, which forms the support structure inside ...
s of small animals. Also some 25 jars containing animals in preservative fuels (
alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...
,
formalin Formaldehyde ( , ) (systematic name methanal) is a naturally occurring organic compound with the formula and structure . The pure compound is a pungent, colourless gas that polymerises spontaneously into paraformaldehyde (refer to section Fo ...
), some anatomically prepared to show inner organs (1830–1910). Part of the collection in the room was prepared by Jan van der Hoeven (1802–1868), professor of
Zoology Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological clas ...
,
Comparative Anatomy Comparative anatomy is the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny (the evolution of species). The science began in the classical era, continuing in t ...
,
Anthropology Anthropology is the scientific study of humanity, concerned with human behavior, human biology, cultures, societies, and linguistics, in both the present and past, including past human species. Social anthropology studies patterns of behavi ...
,
Mineralogy Mineralogy is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts. Specific studies within mineralogy include the proces ...
and
Geology Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Ear ...
at the
University of Leiden Leiden University (abbreviated as ''LEI''; nl, Universiteit Leiden) is a public research university in Leiden, Netherlands. The university was founded as a Protestant university in 1575 by William, Prince of Orange, as a reward to the city of Le ...
. His portrait is on display. Van der Hoeven studied members of 'exotic races' (as it was called at the time), and produced a large amount of visual materials (
drawing Drawing is a form of visual art in which an artist uses instruments to mark paper or other two-dimensional surface. Drawing instruments include graphite pencils, pen and ink, various kinds of paints, inked brushes, colored pencils, crayons, ...
s,
engraving Engraving is the practice of incising a design onto a hard, usually flat surface by cutting grooves into it with a Burin (engraving), burin. The result may be a decorated object in itself, as when silver, gold, steel, or Glass engraving, glass ...
s,
lithograph Lithography () is a planographic method of printing originally based on the immiscibility of oil and water. The printing is from a stone (lithographic limestone) or a metal plate with a smooth surface. It was invented in 1796 by the German a ...
s). Three of these visual studies are on display. ;13 Collection: Petrus Koning Anatomical wax models by Petrus Koning (1787–1834), anatomical gouaches ;14 Temporary exhibition space ;15 Temporary exhibition space ;16 Electricity and light This room is dedicated to the scientific and technical progress in fields of electricity and optics in the 19th century. Inventions like telegraphy and the camera had a revolutionary and lasting impact on everyday life. The room shows a collection of 'microscopes (compound, binocular, achromatic, inverted) (1730–1860) and attributes. A set of instruments for optical
chemical analysis Analytical chemistry studies and uses instruments and methods to separate, identify, and quantify matter. In practice, separation, identification or quantification may constitute the entire analysis or be combined with another method. Separati ...
(1850–1900): a crystal goniometer, a polarimeter, a
saccharimeter A saccharimeter is an instrument for measuring the concentration of sugar solutions. This is commonly achieved using a measurement of refractive index (refractometer) or the angle of rotation of polarization of optically active sugars (polarimet ...
, a
spectroscope An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify mate ...
, a
bunsen burner A Bunsen burner, named after Robert Bunsen, is a kind of ambient air gas burner used as laboratory equipment; it produces a single open gas flame, and is used for heating, sterilization, and combustion. The gas can be natural gas (which is main ...
, a solution tube, gas-discharge tubes. Devices to study, demonstrate and explain the physical qualities of light:
prism Prism usually refers to: * Prism (optics), a transparent optical component with flat surfaces that refract light * Prism (geometry), a kind of polyhedron Prism may also refer to: Science and mathematics * Prism (geology), a type of sedimentary ...
s and
lenses A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), ...
, a
heliostat A heliostat (from ''helios'', the Greek word for ''sun'', and ''stat'', as in stationary) is a device that includes a mirror, usually a plane mirror, which turns so as to keep reflecting sunlight toward a predetermined target, compensating ...
and
carbon arc lamp An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc). The carbon arc light, which consists of an arc between carbon electrodes in air, invented by Humphry Davy in the first decade of the 1800s, ...
(with clockwork)(1820–1870). A collection of applied optics: a
camera A camera is an Optics, optical instrument that can capture an image. Most cameras can capture 2D images, with some more advanced models being able to capture 3D images. At a basic level, most cameras consist of sealed boxes (the camera body), ...
,
sextant A sextant is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celes ...
,
stereoscope A stereoscope is a device for viewing a stereoscopic pair of separate images, depicting left-eye and right-eye views of the same scene, as a single three-dimensional image. A typical stereoscope provides each eye with a lens that makes the ima ...
, several
telescope A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally meaning only an optical instrument using lenses, curved mirrors, or a combination of both to observe ...
s, mechanical lantern slides, a repeating reflecting circle (?), a phantascope (two discs, one with slits, one with images, which when rotating in opposite directions create a
cinematographic Cinematography (from ancient Greek κίνημα, ''kìnema'' "movement" and γράφειν, ''gràphein'' "to write") is the art of motion picture (and more recently, electronic video camera) photography. Cinematographers use a lens to foc ...
effect), a
projection Projection, projections or projective may refer to: Physics * Projection (physics), the action/process of light, heat, or sound reflecting from a surface to another in a different direction * The display of images by a projector Optics, graphic ...
lantern (1770–1860). Several telescopes: achromatic telescopes (1770 and 1850) and a
reflecting telescope A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternati ...
(1830). Several electrostatic devices: batteries composed of
leyden jar A Leyden jar (or Leiden jar, or archaically, sometimes Kleistian jar) is an electrical component that stores a high-voltage electric charge (from an external source) between electrical conductors on the inside and outside of a glass jar. It typi ...
s and
electrical machine In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others. They are electromechanical energy converters: an electric motor converts electricity ...
s (1770–1800) that were used to generate
electricity Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described ...
. A variety of electrostatic toys and experimentation kits (1770–1820) to amuse and educate the public. Some show cases still to do. ;17 Zander Devices Devices for
physiotherapy Physical therapy (PT), also known as physiotherapy, is one of the allied health professions. It is provided by physical therapists who promote, maintain, or restore health through physical examination, diagnosis, management, prognosis, patient ...
using the method of Swedish physician
Gustav Zander Dr. Jonas Gustav Vilhelm Zander (29 March 1835 in Stockholm – 17 June 1920) was a Swedish physician, orthopedist and one of the originators of mechanotherapy. He is known for inventing a therapeutic method of exercise carried out by means of a ...
, developed ca. 1865. These devices featured on two world exhibitions. Their success led to 120 Zander institutes worldwide. ;18 Specialisation in medicine ;19 The Anatomical world of Dr Auzoux French doctor Louis Auzoux (1797–1870) pioneered the use of
papier-mâché upright=1.3, Mardi Gras papier-mâché masks, Haiti upright=1.3, Papier-mâché Catrinas, traditional figures for day of the dead celebrations in Mexico Papier-mâché (, ; , literally "chewed paper") is a composite material consisting of p ...
for highly detailed and colored anatomical models, with detachable parts, which allowed
mass production Mass production, also known as flow production or continuous production, is the production of substantial amounts of standardized products in a constant flow, including and especially on assembly lines. Together with job production and batch ...
for educational purposes. A selection of the many models on display: many human body parts, for example a box set with a model of female
sexual organ A sex organ (or reproductive organ) is any part of an animal or plant that is involved in sexual reproduction. The reproductive organs together constitute the reproductive system. In animals, the testis in the male, and the ovary in the female, a ...
s plus almost 20 embryonic stages, models of the
womb The uterus (from Latin ''uterus'', plural ''uteri'') or womb () is the organ in the reproductive system of most female mammals, including humans that accommodates the embryonic and fetal development of one or more embryos until birth. The uter ...
for every month of pregnancy. For purposes of
comparative anatomy Comparative anatomy is the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny (the evolution of species). The science began in the classical era, continuing in t ...
: models of
brain A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It is located in the head, usually close to the sensory organs for senses such as vision. It is the most complex organ in a v ...
or
nervous system In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The nervous system detects environmental changes th ...
of diverse animals, models of
blood circulation The blood circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate. It includes the cardiovascular system, or vascular system, tha ...
in diverse animals (e.g. a
turtle Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked tu ...
, a
crocodile Crocodiles (family (biology), family Crocodylidae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. The term crocodile is sometimes used even more loosely to inclu ...
), models of
stomach The stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital organ in the digestive system. The stomach i ...
or alimentary canal (e.g.
octopus An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttle ...
,
honey bee A honey bee (also spelled honeybee) is a eusocial flying insect within the genus ''Apis'' of the bee clade, all native to Afro-Eurasia. After bees spread naturally throughout Africa and Eurasia, humans became responsible for the current co ...
).


20th century

;20 Chemistry: Dutch First Nobel Prize Dutch scientist Jacobus Henricus van 't Hoff (1852–1911) was the first person to receive the Nobel Prize in Chemistry, for his discovery of the laws of chemical dynamics and
osmotic pressure Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane. It is also defined as the measure of the tendency of a solution to take in a pure ...
in solutions. In the room hangs a painted portrait of van 't Hoff. His golden Nobel prize medal, and a lab journal are also shown. Also a variety of elementary equipment for a chemical
laboratory A laboratory (; ; colloquially lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed. Laboratory services are provided in a variety of settings: physicia ...
: a
distilling Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation, usually inside an apparatus known as a still. Dry distillation is the heating ...
apparatus for water (1860),
dilatometer A dilatometer is a scientific instrument that measures volume changes caused by a physical or chemical process. A familiar application of a dilatometer is the mercury-in-glass thermometer, in which the change in volume of the liquid column is ...
s,
thermometer A thermometer is a device that temperature measurement, measures temperature or a temperature gradient (the degree of hotness or coldness of an object). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a merc ...
s,
hydrometer A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity. A hydrometer ...
s,
alcohol Alcohol most commonly refers to: * Alcohol (chemistry), an organic compound in which a hydroxyl group is bound to a carbon atom * Alcohol (drug), an intoxicant found in alcoholic drinks Alcohol may also refer to: Chemicals * Ethanol, one of sev ...
meters, an oleometer, a colorimeter (1880),
pycnometer Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest ...
s (some with thermometer),
pipette A pipette (sometimes spelled as pipett) is a laboratory tool commonly used in chemistry, biology and medicine to transport a measured volume of liquid, often as a media dispenser. Pipettes come in several designs for various purposes with diffe ...
s,
burette A burette is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in Titration, titrations. It is a long, graduated glass tube, with a stopcock at its lower end and a tapered capillary tube at the stop ...
s,
volumetric flask A volumetric flask (measuring flask or graduated flask) is a piece of laboratory apparatus, a type of laboratory flask, calibrated to contain a precise volume at a certain temperature. Volumetric flasks are used for precise dilutions and prepar ...
s, a boiling flask, a
spectral ''Spectral'' is a 2016 3D military science fiction, supernatural horror fantasy and action-adventure thriller war film directed by Nic Mathieu. Written by himself, Ian Fried, and George Nolfi from a story by Fried and Mathieu. The film stars ...
burner and
spectroscope An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify mate ...
(1880), polarimeters, a
kipp generator Kipp's apparatus, also called Kipp generator, is an apparatus designed for preparation of small volumes of gases. It was invented around 1844 by the Dutch pharmacist Petrus Jacobus Kipp and widely used in chemical laboratories and for demonstrati ...
(1850), sample collections of experimental chemicals (some in wooden boxes), an evaporating basin, gas burners, an oxyhydrogen
voltmeter A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. It is connected in parallel. It usually has a high resistance so that it takes negligible current from the circuit. Ana ...
, apparatus for
electrolysis In chemistry and manufacturing, electrolysis is a technique that uses direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from n ...
, an
analytical balance An analytical balance (or chemical ''balance'') is a class of balance designed to measure small mass in the sub-milligram range. The measuring pan of an analytical balance (0.1 mg resolution or better) is inside a transparent enclosure with do ...
,
cork Cork or CORK may refer to: Materials * Cork (material), an impermeable buoyant plant product ** Cork (plug), a cylindrical or conical object used to seal a container ***Wine cork Places Ireland * Cork (city) ** Metropolitan Cork, also known as G ...
presses, a
refractometer A refractometer is a laboratory or field device for the measurement of an Refractive index, index of refraction (refractometry). The index of refraction is calculated from the observed refraction angle using Snell's law. For mixtures, the index ...
(1910), a
flash point The flash point of a material is the "lowest liquid temperature at which, under certain standardized conditions, a liquid gives off vapours in a quantity such as to be capable of forming an ignitable vapour/air mixture". (EN 60079-10-1) The fl ...
apparatus for petroleum, a
circular slide rule The slide rule is a mechanical analog computer which is used primarily for multiplication and division, and for functions such as exponents, roots, logarithms, and trigonometry. It is not typically designed for addition or subtraction, which i ...
. ;21 Physics: Factories of Science In the early years of the 19th century, 4 Dutch physicists received a Nobel Prize in quick succession. This room is dedicated to their work and legacy. *In 1902
Hendrik Lorentz Hendrik Antoon Lorentz (; 18 July 1853 – 4 February 1928) was a Dutch physicist who shared the 1902 Nobel Prize in Physics with Pieter Zeeman for the discovery and theoretical explanation of the Zeeman effect. He also derived the Lorentz t ...
(1853–1928) and
Pieter Zeeman Pieter Zeeman (; 25 May 1865 – 9 October 1943) was a Dutch physicist who shared the 1902 Nobel Prize in Physics with Hendrik Lorentz for his discovery of the Zeeman effect. Childhood and youth Pieter Zeeman was born in Zonnemaire, a small town ...
(1865–1943). For their combined work on and discovery of the
Zeeman effect The Zeeman effect (; ) is the effect of splitting of a spectral line into several components in the presence of a static magnetic field. It is named after the Dutch physicist Pieter Zeeman, who discovered it in 1896 and received a Nobel prize ...
, where spectral lines split under the influence of a magnetic field. *In 1910
Johannes Diderik van der Waals Johannes Diderik van der Waals (; 23 November 1837 – 8 March 1923) was a Dutch theoretical physicist and thermodynamicist famous for his pioneering work on the equation of state for gases and liquids. Van der Waals started his career as a sch ...
(1837–1923)
thermodynamicist In thermodynamics, a thermodynamicist is someone who studies thermodynamic processes and phenomena, i.e. the physics that deal with mechanical action and relations of heat. Among the well-known number of famous thermodynamicists, include Sadi Ca ...
famous for his work on an
equation of state In physics, chemistry, and thermodynamics, an equation of state is a thermodynamic equation relating state variables, which describe the state of matter under a given set of physical conditions, such as pressure, volume, temperature, or internal ...
for
gases Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or ...
and
liquids A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being solid, gas, an ...
. *In 1913
Heike Kamerlingh Onnes Heike Kamerlingh Onnes (21 September 1853 – 21 February 1926) was a Dutch physicist and Nobel laureate. He exploited the Hampson–Linde cycle to investigate how materials behave when cooled to nearly absolute zero and later to liquefy heliu ...
(1853–1926). Onnes was the first to
liquefy In materials science, liquefaction is a process that generates a liquid from a solid or a gas or that generates a non-liquid Phase (matter), phase which behaves in accordance with fluid dynamics. It occurs both nature, naturally and artificially. ...
helium Helium (from el, ἥλιος, helios, lit=sun) is a chemical element with the symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. ...
(1908), and the discoverer of
superconductivity Superconductivity is a set of physical properties observed in certain materials where electrical resistance vanishes and magnetic flux fields are expelled from the material. Any material exhibiting these properties is a superconductor. Unlike ...
. For many years his laboratory was the coldest place on earth. On display are a helium liquefier and associated tools, devices to measure superconductivity (e.g.
rheostat A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat. The measuring instrume ...
s), and to automatically record measurements: a
cathode A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic ''CCD'' for ''Cathode Current Departs''. A conventional current describes the direction in whi ...
tube, a thermograph, drum recorders and a
paper tape Five- and eight-hole punched paper tape Paper tape reader on the Harwell computer with a small piece of five-hole tape connected in a circle – creating a physical program loop Punched tape or perforated paper tape is a form of data storage ...
recorder. Also large (from today's perspective) devices, mostly made from wood and copper, to measure and display
electricity Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described ...
(1900–1930): volt meters, a resistance box, radio valves, a universal bridge,
mirror galvanometer A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected on a scale acts as a long massless pointer. In 1826, Johann Christian Poggendorff devel ...
s, a quadrant
electrometer An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical handmade mechanical instruments to high-precision electronic devices. Modern ...
. Apparatuses to study radiation: a Wilson
cloud chamber A cloud chamber, also known as a Wilson cloud chamber, is a particle detector used for visualizing the passage of ionizing radiation. A cloud chamber consists of a sealed environment containing a supersaturated vapour of water or alcohol. ...
, an
electrometer An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical handmade mechanical instruments to high-precision electronic devices. Modern ...
with
ionization chamber The ionization chamber is the simplest type of gas-filled radiation detector, and is widely used for the detection and measurement of certain types of ionizing radiation, including X-rays, gamma rays, and beta particles. Conventionally, the term ...
,
X-ray An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation. Most X-rays have a wavelength ranging from 10  picometers to 10  nanometers, corresponding to frequencies in the range 30&nb ...
, cathode-ray and canal ray tubes, a
fluorescent Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore a lower photon energy, tha ...
lamp. Equipment to study the properties of light (and radio waves in general), including the
wave–particle duality Wave–particle duality is the concept in quantum mechanics that every particle or quantum entity may be described as either a particle or a wave. It expresses the inability of the classical concepts "particle" or "wave" to fully describe the ...
(most 1900–1910): a slit, a
polarizer A polarizer or polariser is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. It can filter a beam of light of undefined or mixed polarization into a beam of well ...
, a photo-electric cell, a
Fresnel Augustin-Jean Fresnel (10 May 1788 – 14 July 1827) was a French civil engineer and physicist whose research in optics led to the almost unanimous acceptance of the wave theory of light, excluding any remnant of Newton's corpuscular the ...
double mirror,
lenses A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), ...
, an
induction coil An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Rühmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply. p.98 To ...
, a
photosensitive Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light. In medicine, the term is principally used for abnormal reactions of the skin, and two types are distinguished, photoallergy and phototoxicity. ...
resistor A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active el ...
, a
spectroscope An optical spectrometer (spectrophotometer, spectrograph or spectroscope) is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify mate ...
, an
oscillograph An oscilloscope (informally a scope) is a type of electronic test instrument that graphically displays varying electrical voltages as a two-dimensional plot of one or more signals as a function of time. The main purposes are to display repetiti ...
, a
wireless Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most ...
receiver, a
microphone A microphone, colloquially called a mic or mike (), is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public ...
, standards of self-induction. Also Zeeman's Nobel Prize diploma and medal and a lab diary, an
electromagnet An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the ...
with polar pieces, 3D plaster models to visualize
thermodynamic Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of ther ...
properties (e.g.
phase transition In chemistry, thermodynamics, and other related fields, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic states of ...
s). ;22 Medicine: Man as a machine Pieces at display include: a gigantic
microtome A microtome (from the Greek ''mikros'', meaning "small", and ''temnein'', meaning "to cut") is a cutting tool used to produce extremely thin slices of material known as ''sections''. Important in science, microtomes are used in microscopy, allow ...
, the first
heart-lung machine Cardiopulmonary bypass (CPB) is a technique in which a machine temporarily takes over the function of the heart and lungs during surgery, maintaining the circulation of blood and oxygen to the body. The CPB pump itself is often referred to as a ...
(prototype) by inventor Jacob Jongbloed (1948), the first kidney dialysis machine by inventor
Willem Johan Kolff Willem Johan "Pim" Kolff (February 14, 1911 – February 11, 2009) was a pioneer of hemodialysis, artificial heart, as well as in the entire field of artificial organs. Willem was a member of the Kolff family, an old Dutch patrician fami ...
, X-ray equipment, an
iron lung An iron lung is a type of negative pressure ventilator (NPV), a mechanical respirator which encloses most of a person's body, and varies the air pressure in the enclosed space, to stimulate breathing.Shneerson, Dr. John M., Newmarket General ...
,
galvanometer A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely. A galvanom ...
tools, a bow and arrow used to draw ultra thin quartz fibres (by shooting away a droplet of molten quartz), the original golden
Nobel Prize The Nobel Prizes ( ; sv, Nobelpriset ; no, Nobelprisen ) are five separate prizes that, according to Alfred Nobel's will of 1895, are awarded to "those who, during the preceding year, have conferred the greatest benefit to humankind." Alfr ...
medal from
Willem Einthoven Willem Einthoven (21 May 1860 – 29 September 1927) was a Dutch doctor and physiologist. He invented the first practical electrocardiograph (ECG or EKG) in 1895 and received the Nobel Prize in Physiology or Medicine in 1924 for it ("for the di ...
(for developing the first practical electrocardiogram in 1903) ;23 Astronomy: Celestial Accounting ;24
Microscopy Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of micr ...
: New ways The room houses two
electron microscopes An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a hi ...
(1947–1950) and related equipment (gold vaporiser, lens, object holders, a cooler, a goniometer), a collection of compound and specimen microscopes (some binocular) (1840–1870) plus accompanying microscope lamps and a tool box, a binocular polarisation microscope (1850), several
microtome A microtome (from the Greek ''mikros'', meaning "small", and ''temnein'', meaning "to cut") is a cutting tool used to produce extremely thin slices of material known as ''sections''. Important in science, microtomes are used in microscopy, allow ...
s (a.o. a cryomicrotome) and ultramicrotomes, a phase contrast microscope, a
fluorescence microscope A fluorescence microscope is an optical microscope that uses fluorescence instead of, or in addition to, scattering, reflection, and attenuation or absorption, to study the properties of organic or inorganic substances. "Fluorescence microsc ...
(plus several epi-illuminators, to exploit the difference between emitted and reflected light frequencies that some substances display), compound microscope with transformer in camera installation, a photomicroscope (photo camera with inverted microscope), a boxed collection of microscopic
specimen Specimen may refer to: Science and technology * Sample (material), a limited quantity of something which is intended to be similar to and represent a larger amount * Biological specimen or biospecimen, an organic specimen held by a biorepository ...
s (1870). The museum also contains a fountain pen that was gifted in 1921 by
Albert Einstein Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theory ...
to
Paul Ehrenfest Paul Ehrenfest (18 January 1880 – 25 September 1933) was an Austrian theoretical physicist, who made major contributions to the field of statistical mechanics and its relations with quantum mechanics, including the theory of phase transition a ...
, then the director of the physics faculty of Leiden University. This pen was gifted to Ehrenfest as a thank you gift for the friendship that he and Einstein shared, and because Ehrenfest created a professorship for Einstein. Einstein was a 'bijzonder hoogleraar', meaning a professor by special appointment made possible by the Leids Universiteits Fonds from 1920 up to officially 1946. In the first half of his appointment he visited Leiden regularly to give lectures. There is a note with the pen on which is written (In German): 'This pen has been used for years by Einstein, especially during the time between 1912 and 1921 – So that all his designs and calculations relating to general relativity and gravity from this time period are written with this pen. He gave this pen to me in 1921. P. Ehrenfest. '


References


External links

*
Museum Boerhaave
official website *
Museum Boerhaave
official website {{Authority control Museums in Leiden Medical museums in the Netherlands Science museums in the Netherlands Science and technology in the Netherlands