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1713 In Science
The year 1713 in science and technology involved some significant events. Astronomy * John Rowley of London produces an orrery to a commission by Charles Boyle, 4th Earl of Orrery. Mathematics * September 9 – Nicolas Bernoulli first describes the St. Petersburg paradox in a letter to Pierre Raymond de Montmort. * November 13 – James Waldegrave provides the first known minimax mixed strategy solution to a two-person game, in a letter to de Montmort. * Jacob Bernoulli's best known work, ''Ars Conjectandi'' (''The Art of Conjecture''), is published posthumously by his nephew. It contains a mathematical proof of the law of large numbers, the Bernoulli numbers, and other important research in probability theory and enumeration. Medicine * William Cheselden publishes ''Anatomy of the Human Body'' and it becomes a popular work on anatomy, at least in part due to it being written in English rather than Latin. * Italian Bernardino Ramazzini provides one of the first descriptions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dystonia
Dystonia is a neurology, neurological Hyperkinesia, hyperkinetic Movement disorders, movement disorder in which sustained or repetitive muscle contractions occur involuntarily, resulting in twisting and repetitive movements or abnormal fixed postures. The movements may resemble a tremor. Dystonia is often intensified or exacerbated by physical activity, and symptoms may progress into adjacent muscles. The disorder may be Heredity, hereditary or caused by other factors such as birth trauma (physical), birth-related or other Injury, physical trauma, infection, poisoning (e.g., lead poisoning) or reaction to Medication, pharmaceutical drugs, particularly Antipsychotic, neuroleptics, or stress. Treatment must be highly customized to the needs of the individual and may include oral medications, chemodenervation Botulinum toxin, botulinum neurotoxin injections, physical therapy, or other supportive therapies, and surgical procedures such as deep brain stimulation. Classification The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloucester, Massachusetts
Gloucester ( ) is a city in Essex County, Massachusetts, United States. It sits on Cape Ann and is a part of North Shore (Massachusetts), Massachusetts's North Shore. The population was 29,729 at the 2020 United States census, 2020 U.S. Census. An important center of the fishing industry and a popular summer destination, Gloucester consists of an urban core on the north side of the harbor and the outlying neighborhoods of Annisquam, Massachusetts, Annisquam, Bay View, Lanesville, Folly Cove, Magnolia, Massachusetts, Magnolia, Riverdale, East Gloucester, and West Gloucester. History The boundaries of Gloucester originally included the town of Rockport, Massachusetts, Rockport, in an area dubbed "Sandy Bay". The village separated formally from Gloucester on February 27, 1840. In 1873, Gloucester was reincorporated as a city. Contact period Native Americans in the United States, Native Americans inhabited what would become northeastern Massachusetts for thousands of years prior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schooner
A schooner ( ) is a type of sailing ship, sailing vessel defined by its Rig (sailing), rig: fore-and-aft rigged on all of two or more Mast (sailing), masts and, in the case of a two-masted schooner, the foremast generally being shorter than the mainmast. A common variant, the topsail schooner also has a square topsail on the foremast, to which may be added a Topgallant sail, topgallant. Differing definitions leave uncertain whether the addition of a Course (sail), fore course would make such a vessel a brigantine. Many schooners are Gaff rig, gaff-rigged, but other examples include Bermuda rig and the staysail schooner. Etymology The term "schooner" first appeared in eastern North America in the early 1700s. The term may be related to a Scots language, Scots word meaning to skip over water, or to skip stones. History The exact origins of schooner rigged vessels are obscure, but by early 17th century they appear in paintings by Dutch marine artists. The earliest known il ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermometer
A thermometer is a device that measures temperature (the hotness or coldness of an object) or temperature gradient (the rates of change of temperature in space). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). Thermometers are widely used in technology and industry to monitor processes, in meteorology, in medicine (''medical thermometer''), and in scientific research. A standard scale While an individual thermometer is able to measure degrees of hotness, the readings on two thermometers cannot be compared unless they conform to an agreed scale. Today there is an absolute thermodynamic temperature scale. Internat ... [...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] |
Ethanol
Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula . It is an Alcohol (chemistry), alcohol, with its formula also written as , or EtOH, where Et is the pseudoelement symbol for ethyl group, ethyl. Ethanol is a Volatility (chemistry), volatile, flammable, colorless liquid with a characteristic wine-like odor and pungent taste. As a psychoactive depressant, it is the active ingredient in alcoholic beverages, and the second most consumed drug globally behind caffeine. Ethanol is naturally produced by the fermentation process of sugars by yeasts or via petrochemical processes such as ethylene hydration. Historically it was used as a general anesthetic, and has modern medical applications as an antiseptic, disinfectant, solvent for some medications, and antidote for methanol poisoning and ethylene glycol poisoning. It is used as a chemical solvent and in the Chemical synthesis, synthesis of orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Gabriel Fahrenheit
Daniel Gabriel Fahrenheit FRS (; ; 24 May 1686 – 16 September 1736) was a physicist, inventor, and scientific instrument maker, born in Poland to a family of German extraction. Fahrenheit invented thermometers accurate and consistent enough to allow the comparison of temperature measurements between different observers using different instruments. Fahrenheit is also credited with inventing mercury-in-glass thermometers more accurate and superior to spirit-filled thermometers at the time. The popularity of his thermometers led to the widespread adoption of his Fahrenheit scale attached to his instruments.Grigull, Ulrich (1966). ''Fahrenheit, a Pioneer of Exact Thermometry''. (The Proceedings of the 8th International Heat Transfer Conference, San Francisco, 1966, Vol. 1, pp. 9–18.) Biography Early life Fahrenheit was born in Gdańsk (Danzig), then in the Polish–Lithuanian Commonwealth. The Fahrenheits were a German Hanse merchant family who had lived in several Hanse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypotheses Non Fingo
In the history of physics, (Latin for "I frame no hypotheses", or "I contrive no hypotheses") is a phrase used by Isaac Newton in the essay , which was appended to the second edition of in 1713. Original remark A 1999 translation of the presents Newton's remark as follows: Later commentary The 19th-century philosopher of science William Whewell qualified this statement, saying that, "it was by such a use of hypotheses, that both Newton himself and Kepler, on whose discoveries those of Newton were based, made their discoveries". Whewell stated:What is requisite is, that the hypothesis should be close to the facts, and not connected with them by other arbitrary and untried facts; and that the philosopher should be ready to resign it as soon as the facts refuse to confirm it. Later, Imre Lakatos asserted that such a resignation should not be too rushed. See also * Action at a distance Action at a distance is the concept in physics that an object's motion (physics), motion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Scholium
The General Scholium () is an essay written by Isaac Newton, appended to his work of ''Philosophiæ Naturalis Principia Mathematica'', known as the ''Principia''. It was first published with the second (1713) edition of the ''Principia'' and reappeared with some additions and modifications on the third (1726) edition.The General Scholium online, trans. Andrew Motte, 1729. It is best known for the "''Hypotheses non fingo''" ("I frame no hypothesis") expression, which Newton used as a response to some of the criticism received after the release of the first edition (1687). In the essay Newton not only counters the natural philosophy of René Descartes and Gottfried Leibniz, but also addresses issues of scientific methodology, theology, and metaphysics. Rejection of Cartesian vortices In the first paragraph, Newton attacks René Descartes' model of the Solar System. Descartes and his supporters were followers of mechanical philosophy, a form of natural philosophy popular in the 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roger Cotes
Roger Cotes (10 July 1682 – 5 June 1716) was an English mathematician, known for working closely with Isaac Newton by proofreading the second edition of his famous book, the '' Principia'', before publication. He also devised the quadrature formulas known as Newton–Cotes formulas, which originated from Newton's research, and made a geometric argument that can be interpreted as a logarithmic version of Euler's formula. He was the first Plumian Professor at Cambridge University from 1707 until his death. Early life Cotes was born in Burbage, Leicestershire. His parents were Robert, the rector of Burbage, and his wife, Grace, ''née'' Farmer. Roger had an elder brother, Anthony (born 1681), and a younger sister, Susanna (born 1683), both of whom died young. At first Roger attended Leicester School, where his mathematical talent was recognised. His aunt Hannah had married Rev. John Smith, and Smith took on the role of tutor to encourage Roger's talent. The Smiths' son, R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
