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The Sceptical Chymist
''The Sceptical Chymist: or Chymico-Physical Doubts & Paradoxes'' is the title of a book by Robert Boyle, published in London in 1661. In the form of a dialogue, the ''Sceptical Chymist'' presented Boyle's hypothesis that matter consisted of corpuscles and clusters of corpuscles in motion and that every phenomenon was the result of collisions of particles in motion. Boyle also objected to the definitions of elemental bodies propounded by Aristotle and by Paracelsus, instead defining elements as "perfectly unmingled bodies" (see below). For these reasons Robert Boyle has sometimes been called the founder of modern chemistry. The main setting for the book is a private garden, where five characters are having a conversation about the constituents of mixed bodies. Four of the characters are named, while the fifth one is the unnamed narrator. Due to the popularity of the book, Aristotle’s doctrine of the four elements and Paracelsus’ theory of the three principles gradually pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Boyle
Robert Boyle (; 25 January 1627 – 31 December 1691) was an Anglo-Irish natural philosopher, chemist, physicist, Alchemy, alchemist and inventor. Boyle is largely regarded today as the first modern chemist, and therefore one of the founders of modern chemistry, and one of the pioneers of modern experimental scientific method. He is best known for Boyle's law, which describes the inversely proportional relationship between the absolute pressure and volume of a gas, if the temperature is kept constant within a closed system. Among his works, ''The Sceptical Chymist'' is seen as a cornerstone book in the field of chemistry. He was a devout and pious Anglican and is noted for his works in theology. Biography Early years Boyle was born at Lismore Castle in County Waterford, in the far south of Ireland, the seventh son and fourteenth child of Richard Boyle, 1st Earl of Cork, the 1st Earl of Cork ("the Great Earl of Cork") and Catherine Fenton Boyle, Catherine Fenton. Lord Cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkahest
In Renaissance alchemy, alkahest was the theorized "universal solvent". It was supposed to be capable of dissolving any composite substance, including gold (then not considered an element), without altering or destroying its fundamental components. By extracting from composite substances their fundamental virtues and properties, alchemists hoped to gain control of invaluable medical healing properties (see also azoth). For this reason the alkahest was earnestly sought. At the same time, its very existence was debated among alchemists and philosophers. The first, or one of the first, to mention the alkahest was the Swiss physician and alchemist Paracelsus. Etymology There is no consensus on the origin and etymology of the word alkahest, as Paracelsus left no trace or history of the word. One such view is that the term is of Arabic origin or pseudo-Arabic modeled on similar names of other chemical entities. George Starkey argued it came from the German word ''al-gehest'' (all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinetic Theory Of Gases
The kinetic theory of gases is a simple classical model of the thermodynamic behavior of gases. Its introduction allowed many principal concepts of thermodynamics to be established. It treats a gas as composed of numerous particles, too small to be seen with a microscope, in constant, random motion. These particles are now known to be the atoms or molecules of the gas. The kinetic theory of gases uses their collisions with each other and with the walls of their container to explain the relationship between the macroscopic properties of gases, such as volume, pressure, and temperature, as well as transport properties such as viscosity, thermal conductivity and mass diffusivity. The basic version of the model describes an ideal gas. It treats the collisions as perfectly elastic and as the only interaction between the particles, which are additionally assumed to be much smaller than their average distance apart. Due to the time reversibility of microscopic dynamics ( microsco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Bernoulli
Daniel Bernoulli ( ; ; – 27 March 1782) was a Swiss people, Swiss-France, French mathematician and physicist and was one of the many prominent mathematicians in the Bernoulli family from Basel. He is particularly remembered for his applications of mathematics to mechanics, especially fluid mechanics, and for his pioneering work in probability and statistics. His name is commemorated in the Bernoulli's principle, a particular example of the conservation of energy, which describes the mathematics of the mechanism underlying the operation of two important technologies of the 20th century: the carburetor and the aeroplane wing. Early life Daniel Bernoulli was born in Groningen (city), Groningen, in the Netherlands, into a Bernoulli family, family of distinguished mathematicians.Murray Rothbard, Rothbard, MurrayDaniel Bernoulli and the Founding of Mathematical Economics, ''Mises Institute'' (excerpted from ''An Austrian Perspective on the History of Economic Thought'') The Bernou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Purcell
Henry Purcell (, rare: ; September 1659 – 21 November 1695) was an English composer of Baroque music, most remembered for his more than 100 songs; a tragic opera, Dido and Aeneas, ''Dido and Aeneas''; and his incidental music to a version of Shakespeare's A Midsummer Night's Dream, ''A Midsummer Night's Dream'' called The Fairy-Queen, ''The Fairy Queen''. Purcell's musical style was uniquely English, although it incorporated Music of Italy#Baroque and Classical, Italian and Music of France#Baroque, French elements. Generally considered among the greatest English opera composers, Purcell has been ranked alongside John Dunstaple and William Byrd in the pantheon of English early music. Life and work Early life Purcell was born in St Ann's Lane, Old Pye Street, Westminster, in 1659. Henry Purcell Senior, whose older brother Thomas Purcell was a musician, was a gentleman of the Chapel Royal and sang at the coronation of King Charles II of England. Henry the elder had three ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hail! Bright Cecilia
''Hail! Bright Cecilia'' ( Z.328), also known as ''Ode to St. Cecilia'', was composed by Henry Purcell to a text by the Irishman Nicholas Brady in 1692 in honour of the feast day of Saint Cecilia, patron saint of musicians. Annual celebrations of this saint's feast day (22 November) began in 1683, organised by the Musical Society of London, a group of musicians and music lovers. '' Welcome to all the pleasures'' (Z.339) was written by Purcell in 1683 and he went on to write other Cecilian pieces of which ''Hail! Bright Cecilia'' remains the best known. The first performance on 22 September 1692 at Stationers' Hall was a great success, and received an encore. Text Brady's poem was derived from John Dryden's "A Song for St Cecilia's Day" of 1687. Following Dryden, Brady extols the birth and personality of musical instruments, including the idea that Cecilia invented the organ (see note ). Purcell responds to the text by giving emphasis to the colours and dramatic possibilitie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicholas Brady (poet)
Nicholas Brady (28 October 165920 May 1726), Anglican divine and poet, was born in Bandon, County Cork, Ireland. He was the second son of Irishman Major Nicholas Brady (Ó Brádaigh or Mac Brádaigh) and his wife Martha Gernon, daughter of the English-born judge and author Luke Gernon (little is known of her mother); his great-grandfather was Hugh Brady, the first Protestant Bishop of Meath. He received his education at Westminster School and at Christ Church, Oxford; he had degrees from Trinity College, Dublin (BA 1685, MA 1686, BD & DD 1699)Burtchaell, George Dames; Sadleir, Thomas Ulick (eds), Alumni Dublinenses: a register of the students, graduates, professors and provosts of Trinity College in the University of Dublin(1593-1860)'', p. 93: Dublin, Alex Thom and Co, 1935. Brady was a zealous promoter of the Glorious Revolution and suffered for his beliefs in consequence. When war broke out in Ireland in 1690, Brady, by his influence, thrice prevented the burning of the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Archive
The Internet Archive is an American 501(c)(3) organization, non-profit organization founded in 1996 by Brewster Kahle that runs a digital library website, archive.org. It provides free access to collections of digitized media including websites, Application software, software applications, music, audiovisual, and print materials. The Archive also advocates a Information wants to be free, free and open Internet. Its mission is committing to provide "universal access to all knowledge". The Internet Archive allows the public to upload and download digital material to its data cluster, but the bulk of its data is collected automatically by its web crawlers, which work to preserve as much of the public web as possible. Its web archiving, web archive, the Wayback Machine, contains hundreds of billions of web captures. The Archive also oversees numerous Internet Archive#Book collections, book digitization projects, collectively one of the world's largest book digitization efforts. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford University Press
Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officially granted the legal right to print books by decree in 1586. It is the second-oldest university press after Cambridge University Press, which was founded in 1534. It is a department of the University of Oxford. It is governed by a group of 15 academics, the Delegates of the Press, appointed by the Vice Chancellor, vice-chancellor of the University of Oxford. The Delegates of the Press are led by the Secretary to the Delegates, who serves as OUP's chief executive and as its major representative on other university bodies. Oxford University Press has had a similar governance structure since the 17th century. The press is located on Walton Street, Oxford, Walton Street, Oxford, opposite Somerville College, Oxford, Somerville College, in the inner suburb of Jericho, Oxford, Jericho. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon
Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 electrons. It belongs to group 14 of the periodic table. Carbon makes up about 0.025 percent of Earth's crust. Three Isotopes of carbon, isotopes occur naturally, carbon-12, C and carbon-13, C being stable, while carbon-14, C is a radionuclide, decaying with a half-life of 5,700 years. Carbon is one of the timeline of chemical element discoveries#Pre-modern and early modern discoveries, few elements known since antiquity. Carbon is the 15th abundance of elements in Earth's crust, most abundant element in the Earth's crust, and the abundance of the chemical elements, fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Carbon's abundance, its unique diversity of organic compounds, and its unusual abi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfur
Sulfur ( American spelling and the preferred IUPAC name) or sulphur ( Commonwealth spelling) is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with the chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature. Sulfur is the tenth most abundant element by mass in the universe and the fifth most common on Earth. Though sometimes found in pure, native form, sulfur on Earth usually occurs as sulfide and sulfate minerals. Being abundant in native form, sulfur was known in ancient times, being mentioned for its uses in ancient India, ancient Greece, China, and ancient Egypt. Historically and in literature sulfur is also called brimstone, which means "burning stone". Almost all elemental sulfur is produced as a byproduct of removing sulfur-containing contaminants from natural gas and petroleum.. Downloahere Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead () is a chemical element; it has Chemical symbol, symbol Pb (from Latin ) and atomic number 82. It is a Heavy metal (elements), heavy metal that is density, denser than most common materials. Lead is Mohs scale, soft and Ductility, malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable nuclide, stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its Amphoterism, amphoteric nature; lead and lead oxides react with acids and base (chemistry), bases, and it tends to form covalent bonds. Lead compounds, Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
