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Chrysopoeia
In alchemy, the term chrysopoeia () refers to the artificial production of gold, most commonly by the alleged transmutation of base metals such as lead. A related term is argyropoeia (), referring to the artificial production of silver, often by transmuting copper. Although alchemists pursued many different goals, the making of gold and silver remained one of the defining ambitions of alchemy throughout its history, from Zosimus of Panopolis (c. 300) to Robert Boyle (1627–1691). The word was used in the title of a brief alchemical work, the ''Chrysopoeia of Cleopatra'' attributed to Cleopatra the Alchemist, which was probably written in the first centuries of the Christian era, but which is first found on a single leaf in a tenth-to-eleventh century manuscript in the Biblioteca Marciana, Venice, MS Marciana gr. Z. 299. The document features an ouroboros containing the words "the all is one" (, '), a concept that is related to Hermeticism. Stephen of Alexandria wrote a work ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giovanni Augurello
Giovanni Aurelio Augurello (Joannes Aurelius Augurellus) (1441–1524) was an Italian humanist scholar, poet and alchemist. Born at Rimini, he studied both laws in Rome, Florence and Padova where he also consorted with the leading scholars of his time. At Florence he befriended Marsilio Ficino (1433-1499) and Angelo Poliziano (1454-1494) and later while teaching classics in Treviso joined Aldo Mantius' humanist circle in Venice. Apart from his academic and literary work he practically experimented in metallurgy and provided colour pigments for his friend the ''Hermetic'' painter Giulio Campagnola (born ca. 1480) He is best known for his 1515 allegorical poem on the making of gold, ''Chrysopoeia'', which was dedicated to Pope Leo X; leading to the famous but forged anecdote that the Pope had rewarded Augurello with a beautiful but empty purse as an alchemy, alchemist like him should on his own to be capable of replenishing it — he was actually bestowed with a sinecure at the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleopatra The Alchemist
Cleopatra the Alchemist (Greek: Κλεοπάτρα; fl. ) was a Greek alchemist, writer, and philosopher. She experimented with practical alchemy but is also credited as one of the four female alchemists who could produce the philosopher's stone. Some writers consider her to be the inventor of the alembic, a distillation apparatus. Cleopatra the Alchemist appears to have been active in Alexandria in the 3rd century or 4th century A.D. She is associated with the school of alchemy typified by Mary the Jewess and Comarius. These alchemists used complex apparatus for distillation and sublimation.Taylor, F. Sherwood. “A Survey of Greek Alchemy”. ''The Journal of Hellenic Studies'' 50 (1930): 109–139. Identity and misnomers Cleopatra is a pseudonym for an unknown author or group of authors. She is not the same person as Cleopatra VII. Nonetheless, she is referred to as Cleopatra, Queen of Egypt, in some later works. One example of this can be found in ''Basilica Philosophic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (element)
Mercury is a chemical element; it has Symbol (chemistry), symbol Hg and atomic number 80. It is commonly known as quicksilver. A Heavy metal element, heavy, silvery d-block element, mercury is the only metallic element that is known to be liquid at standard temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). The red pigment vermilion is obtained by Mill (grinding), grinding natural cinnabar or synthetic mercuric sulfide. Exposure to mercury and mercury-containing organic compounds is toxic to the nervous system, immune system and kidneys of humans and other animals; mercury poisoning can result from exposure to water-soluble forms of mercury (such as mercuric chloride or methylmercury) either directly or through mechanisms of biomagnification. Mercu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ouroboros
The ouroboros or uroboros (; ) is an ancient symbol depicting a serpent symbolism, snake or European dragon, dragon Autocannibalism, eating its own tail. The ouroboros entered Western tradition via Egyptian mythology, ancient Egyptian iconography and the Greek Magical Papyri, Greek magical tradition. It was adopted as a symbol in Gnosticism and Hermeticism and, most notably, in alchemy. Some snakes, such as rat snakes, have been known to consume themselves. Name and interpretation The term derives , from ''oura'' 'tail' plus ''-boros'' '-eating'. The ''ouroboros'' is often interpreted as a symbol for eternal cyclic renewal or a Eternal return, cycle of life, death and rebirth; the snake's Sloughing, skin-sloughing symbolises the Metempsychosis, transmigration of souls. The snake biting its own tail is a fertility symbol in some religions: the tail is a Phallus, phallic symbol and the mouth is a yonic or womb-like symbol. Historical representations Ancient Egypt One ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stephen Of Alexandria
Stephanus of Alexandria (; fl. c. 580 – c. 640) was a Byzantine philosopher and teacher who, besides philosophy in the Neo-Platonic tradition, also wrote on alchemy, astrology and astronomy. He was one of the last exponents of the Alexandrian academic tradition before the Islamic conquest of Egypt.. Life Stephanus studied at Alexandria, probably under Elias. He is often named alongside Elias and David as among the Christians of the school of Olympiodorus. According to John Moschus, he was teaching and writing commentaries in Alexandria in the 580s, where he was involved in the controversy over Monophysitism, apparently taking positions on both sides. John calls him a "sophist and philosopher". Shortly after the accession of the Emperor Heraclius in 610, Stephanus moved to Constantinople, the capital of the empire, "thereby bridging late Alexandria and the medieval Byzantine world." Whether he was invited by the emperor is not known. He took up a position as "ecumenical profes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alchemy
Alchemy (from the Arabic word , ) is an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was historically practised in China, India, the Muslim world, and Europe. In its Western form, alchemy is first attested in a number of pseudepigraphical texts written in Greco-Roman Egypt during the first few centuries AD.. Greek-speaking alchemists often referred to their craft as "the Art" (τέχνη) or "Knowledge" (ἐπιστήμη), and it was often characterised as mystic (μυστική), sacred (ἱɛρά), or divine (θɛíα). Alchemists attempted to purify, mature, and perfect certain materials. Common aims were chrysopoeia, the transmutation of " base metals" (e.g., lead) into "noble metals" (particularly gold); the creation of an elixir of immortality; and the creation of panaceas able to cure any disease. The perfection of the human body and soul was thought to result from the alchemical ''magnum opus'' ("Great Work"). The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synthesis Of Precious Metals
The synthesis of precious metals involves the use of either nuclear reactors or particle accelerators to produce these elements. Precious metals occurring as fission products Ruthenium and rhodium are precious metals produced as a small percentage of the fission products from the nuclear fission of uranium. The longest half-lives of the radioisotopes of these elements generated by nuclear fission are 373.59 days for ruthenium and 45 days for rhodium. This makes the extraction of the non-radioactive isotope from spent nuclear fuel possible after a few years of storage, although the extract must be checked for radioactivity from trace quantities of other elements before use. Ruthenium Each kilogram of the fission products of 235U will contain 63.44 grams of ruthenium isotopes with halflives longer than a day. Since a typical used nuclear fuel contains about 3% fission products, one ton of used fuel will contain about 1.9 kg of ruthenium. The 103Ru and 106Ru will r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glenn T
Glenn may refer to: Name or surname * Glenn (name) * John Glenn, U.S. astronaut Cultivars * Glenn (mango) * a 6-row barley variety Places In the United States: * Glenn, California * Glenn County, California * Glenn, Georgia, a settlement in Heard County * Glenn, Illinois * Glenn, Michigan * Glenn, Missouri * Glenn Highway in Alaska Organizations *Glenn Research Center NASA John H. Glenn Research Center at Lewis Field is a NASA center within the cities of Brook Park, Ohio, Brook Park and Cleveland between Cleveland Hopkins International Airport and the Rocky River Reservation of Cleveland Metroparks, with a s ..., a NASA center in Cleveland, Ohio See also * New Glenn, a heavy-lift orbital launch vehicle * * * Glen, a valley * Glen (other) {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Review
''Physical Review'' is a peer-reviewed scientific journal. The journal was established in 1893 by Edward Nichols. It publishes original research as well as scientific and literature reviews on all aspects of physics. It is published by the American Physical Society (APS). The journal is in its third series, and is split in several sub-journals each covering a particular field of physics. It has a sister journal, '' Physical Review Letters'', which publishes shorter articles of broader interest. History ''Physical Review'' commenced publication in July 1893, organized by Cornell University professor Edward Nichols and helped by the new president of Cornell, J. Gould Schurman. The journal was managed and edited at Cornell in upstate New York from 1893 to 1913 by Nichols, Ernest Merritt, and Frederick Bedell. The 33 volumes published during this time constitute ''Physical Review Series I''. The American Physical Society (APS), founded in 1899, took over its publicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioactive
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered ''radioactive''. Three of the most common types of decay are Alpha decay, alpha, Beta decay, beta, and Gamma ray, gamma decay. The weak force is the Fundamental interactions, mechanism that is responsible for beta decay, while the other two are governed by the electromagnetic force, electromagnetic and nuclear forces. Radioactive decay is a randomness, random process at the level of single atoms. According to quantum mechanics, quantum theory, it is impossible to predict when a particular atom will decay, regardless of how long the atom has existed. However, for a significant number of identical atoms, the overall decay rate can be expressed as a decay constant or as a half-life. The half-lives of radioactive atoms have a huge range: f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotopes Of Gold
Gold (79Au) has one stable isotope, 197Au, and 40 radioisotopes, with 195Au being the most stable with a half-life of 186 days. Gold is currently considered the heaviest monoisotopic element. Bismuth formerly held that distinction until alpha-decay of the 209Bi isotope was observed. All isotopes of gold are either radioactive or, in the case of 197Au, observationally stable, meaning that 197Au is predicted to be radioactive but no actual decay has been observed. List of isotopes , -id=Gold-169 , rowspan=2, 169Au , rowspan=2 style="text-align:right" , 79 , rowspan=2 style="text-align:right" , 90 , rowspan=2, 168.99808(32)# , rowspan=2 data-sort-value="1.16e-6", , p (~94%) , 168Pt , rowspan=2, (11/2−) , rowspan=2, , - , α (~6%) , 165mIr , -id=Gold-170 , rowspan=2, 170Au , rowspan=2 style="text-align:right" , 79 , rowspan=2 style="text-align:right" , 91 , rowspan=2, 169.99602(22)# , rowspan=2 data-sort-value="286.0e-6", , p (89%) , 169Pt , ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Large Hadron Collider
The Large Hadron Collider (LHC) is the world's largest and highest-energy particle accelerator. It was built by the CERN, European Organization for Nuclear Research (CERN) between 1998 and 2008, in collaboration with over 10,000 scientists, and hundreds of universities and laboratories across more than 100 countries. It lies in a tunnel in circumference and as deep as beneath the France–Switzerland border near Geneva. The first collisions were achieved in 2010 at an energy of 3.5 tera-electronvolts (TeV) per beam, about four times the previous world record. The discovery of the Higgs boson at the LHC was announced in 2012. Between 2013 and 2015, the LHC was shut down and upgraded; after those upgrades it reached 6.5 TeV per beam (13.0 TeV total collision energy). At the end of 2018, it was shut down for maintenance and further upgrades, and reopened over three years later in April 2022. The collider has four crossing points where the accelerated particles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
