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1828 In Science
The year 1828 in science and technology involved some significant events, listed below. Astronomy * Félix Savary computes the first orbit of a visual double star when he calculates the orbit of the double star Xi Ursae Majoris. Biology * April 27 – London Zoo opens in Regent's Park for members of the Zoological Society of London. * Karl Ernst von Baer lays the foundations of the science of comparative embryology with his book ''Über Entwickelungsgeschichte der Thiere''. He published von Baer's laws. * Martin Lichtenstein publishes a monograph on the ''Dipodidae'', ''Über die Springmäuse'', in Berlin. * Belfast Botanic Gardens open. Chemistry * Swedish chemist Jöns Jakob Berzelius produces a table of atomic weights and discovers thorium. * Urea becomes the first organic compound to be artificially synthesised, by Friedrich Wöhler, establishing that organic compounds could be produced from inorganic starting materials and potentially disproving a cornerstone of vitalism, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science
Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but was preserved in the Muslim world during the Islamic Golden Age and later by the efforts of Byzantine Greek scholars who brought Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thorium
Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a high melting point. Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided. All known thorium isotopes are unstable. The most stable isotope, 232Th, has a half-life of 14.05 billion years, or about the age of the universe; it decays very slowly via alpha decay, starting a decay chain named the thorium series that ends at stable 208 Pb. On Earth, thorium and uranium are the only significantly radioactive elements that still occur naturally in large quantities as primordial elements. Thorium is estimated to be over three times as abundant as uranium in the Earth's crust, and is chiefly refined from monazite sands as a by-product of extracti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edinburgh
Edinburgh ( ; gd, Dùn Èideann ) is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. Historically part of the county of Midlothian (interchangeably Edinburghshire before 1921), it is located in Lothian on the southern shore of the Firth of Forth. Edinburgh is Scotland's List of towns and cities in Scotland by population, second-most populous city, after Glasgow, and the List of cities in the United Kingdom, seventh-most populous city in the United Kingdom. Recognised as the capital of Scotland since at least the 15th century, Edinburgh is the seat of the Scottish Government, the Scottish Parliament and the Courts of Scotland, highest courts in Scotland. The city's Holyrood Palace, Palace of Holyroodhouse is the official residence of the Monarchy of the United Kingdom, British monarchy in Scotland. The city has long been a centre of education, particularly in the fields of medicine, Scots law, Scottish law, literature, philosophy, the sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dissection
Dissection (from Latin ' "to cut to pieces"; also called anatomization) is the dismembering of the body of a deceased animal or plant to study its anatomical structure. Autopsy is used in pathology and forensic medicine to determine the cause of death in humans. Less extensive dissection of plants and smaller animals preserved in a formaldehyde solution is typically carried out or demonstrated in biology and natural science classes in middle school and high school, while extensive dissections of cadavers of adults and children, both fresh and preserved are carried out by medical students in medical schools as a part of the teaching in subjects such as anatomy, pathology and forensic medicine. Consequently, dissection is typically conducted in a morgue or in an anatomy lab. Dissection has been used for centuries to explore anatomy. Objections to the use of cadavers have led to the use of alternatives including virtual dissection of computer models. Overview Plant and animal b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanging
Hanging is the suspension of a person by a noose or ligature around the neck.Oxford English Dictionary, 2nd ed. Hanging as method of execution is unknown, as method of suicide from 1325. The ''Oxford English Dictionary'' states that hanging in this sense is "specifically to put to death by suspension by the neck", though it formerly also referred to crucifixion and death by impalement in which the body would remain "hanging". Hanging has been a common method of capital punishment since medieval times, and is the primary execution method in numerous countries and regions. The first known account of execution by hanging was in Homer's ''Odyssey'' (Book XXII). In this specialised meaning of the common word ''hang'', the past and past participle is ''hanged'' instead of ''hung''. Hanging is a common method of suicide in which a person applies a ligature to the neck and brings about unconsciousness and then death by suspension or partial suspension. Methods of judicial hanging T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burke And Hare Murders
The Burke and Hare murders were a series of sixteen killings committed over a period of about ten months in 1828 in Edinburgh, Scotland. They were undertaken by William Burke and William Hare, who sold the corpses to Robert Knox for dissection at his anatomy lectures. Edinburgh was a leading European centre of anatomical study in the early 19th century, in a time when the demand for cadavers led to a shortfall in legal supply. Scottish law required that corpses used for medical research should only come from those who had died in prison, suicide victims, or from foundlings and orphans. The shortage of corpses led to an increase in body snatching by what were known as "resurrection men". Measures to ensure graves were left undisturbed—such as the use of mortsafes—exacerbated the shortage. When a lodger in Hare's house died, he turned to his friend Burke for advice and they decided to sell the body to Knox. They received what was, for them, the generous sum of £7 10s. A l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Marsden (surgeon)
William Marsden (August 1796 – 16 January 1867) was an English surgeon whose main achievements are the founding of two presently well-known hospitals, the Royal Free Hospital (in 1828) and the Royal Marsden Hospital (in 1851). Marsden was born in Sheffield, Yorkshire, the youngest of eight children. When he left school he was apprenticed to a wholesale druggist in Sheffield. In 1816, he moved to London where he took up an apprenticeship to a surgeon-apothecary before setting up on his own. At the end of 1824 he enrolled as a student of surgery at St Bartholomew's Hospital under the famous surgeon and lecturer John Abernethy (1764–1831). In April 1827 Marsden passed his MRCS examination to qualify as a full surgeon. He became an MD in 1838. After discovering the difficulties the poor had in obtaining medical treatment, Marsden sought to establish a free hospital in London for which "poverty and sickness are the only passports". In 1828 he set up a small dispensary at 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Free Hospital
The Royal Free Hospital (also known simply as the Royal Free) is a major teaching hospital in the Hampstead area of the London Borough of Camden. The hospital is part of the Royal Free London NHS Foundation Trust, which also runs services at Barnet Hospital, Chase Farm Hospital and a number of other sites. The trust is a founder member of the UCLPartners academic health science centre. History Early history What became the Royal Free Hospital was founded in 1828 by the surgeon William Marsden to provide free care to those of little means. It is said that one evening, Marsden found a young girl lying on the steps of St. Andrew Church, Holborn, dying from disease and hunger and sought help for her from one of the nearby hospitals. However, none would take the girl in and she died two days later. After this experience Marsden set up a small dispensary at 16 Greville Street, Holborn, called the London General Institution for the Gratuitous Care of Malignant Diseases. The hospita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston Society For Medical Improvement
The Boston Society for Medical Improvement was an elite society of Boston physicians, established in 1828 for "the cultivation of confidence and good feeling between members of the profession; the eliciting and imparting of information upon the different branches of medical science; and the establishment of a Museum and Library of Pathological Anatomy". It held regular meetings until at least 1917. Founding and organization The Society was established February 19, 1828 by John P. Spooner. By-laws were established at a founding meeting of eleven members,Mumford (1901) p. 3 and the first regular meeting was held on March 10.Mumford (1901) p. 4 Within a year the Society had grown to 25 members. Meetings were held on the second and fourth Mondays of each month, originally in Spooner's home. Usually a member's reading of a paper was followed by discussion of recent cases of either special interest or on which the attending physician wished the opinion of his colleagues. There were fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exploratorium
The Exploratorium is a museum of science, technology, and arts in San Francisco, California. Characterized as "a mad scientist's penny arcade, a scientific funhouse, and an experimental laboratory all rolled into one", the participatory nature of its exhibits and its self-identification as a center for informal learning has led to it being cited as the prototype for participatory museums around the world. The Exploratorium was founded by physicist and educator Frank Oppenheimer and opened in 1969 at the Palace of Fine Arts, its home until January 2, 2013. On April 17, 2013, the Exploratorium reopened at Piers 15 and 17 on San Francisco's Embarcadero. The historic interior and exterior of Pier 15 were renovated extensively prior to the move, and are divided into several galleries mainly separated by content, including the physics of seeing and listening (Light and Sound), Human Behavior, Living Systems, Tinkering (including electricity and magnetism), the Outdoor Gallery, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chocolate
Chocolate is a food made from roasted and ground cacao seed kernels that is available as a liquid, solid, or paste, either on its own or as a flavoring agent in other foods. Cacao has been consumed in some form since at least the Olmec civilization (19th-11th century BCE), and the majority of Mesoamerican people ─ including the Maya and Aztecs ─ made chocolate beverages. The seeds of the cacao tree have an intense bitter taste and must be fermented to develop the flavor. After fermentation, the seeds are dried, cleaned, and roasted. The shell is removed to produce cocoa nibs, which are then ground to cocoa mass, unadulterated chocolate in rough form. Once the cocoa mass is liquefied by heating, it is called chocolate liquor. The liquor may also be cooled and processed into its two components: cocoa solids and cocoa butter. Baking chocolate, also called bitter chocolate, contains cocoa solids and cocoa butter in varying proportions, without any added sugar. Powder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cocoa Butter
Cocoa butter, also called theobroma oil, is a pale-yellow, edible fat extracted from the cocoa bean. It is used to make chocolate, as well as some ointments, toiletries, and pharmaceuticals. Cocoa butter has a cocoa flavor and aroma. Its melting point is just below human body temperature. Extraction and composition Cocoa butter is obtained from whole cocoa beans. For use in chocolate manufacture, the beans are fermented before being dried. The beans are then roasted and separated from their hulls to produce cocoa nibs. About 54–58% of the cocoa nibs is cocoa butter. The cocoa nibs are ground to form cocoa mass, which is liquid at temperatures above the melting point of cocoa butter and is known as cocoa liquor or chocolate liquor. Chocolate liquor is pressed to separate the cocoa butter from the non-fat cocoa solids. Cocoa butter is sometimes deodorized to remove strong or undesirable tastes. Cocoa butter contains a high proportion of saturated fats as well as monounsatu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
