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1687 In Science
{{Science year nav, 1687 The year 1687 in science and technology involved some significant events. Astronomy * The constellation ''Triangulum Minus'' is named by Johannes Hevelius. Biology * Alida Withoos at the house of Agnes Block makes a painting of the first pineapple bred in Europe. Medicine * Dutch physician Willem ten Rhijne publishes ''Verhandelinge van de Asiatise Melaatsheid na een naaukeuriger ondersoek ten dienste van het gemeen'' in Amsterdam, explaining Asian leprosy to the West. Physics * July 5 – Isaac Newton's ''Philosophiæ Naturalis Principia Mathematica'', known as the ''Principia'', is published by the Royal Society of London. In it, Newton describes his theory of universal gravitation, explains the laws of mechanics (including Newton's laws of motion), gives a formula for the speed of sound and demonstrates that Earth is an oblate spheroid. The concepts in the ''Principia'' become the foundations of modern physics. Births * October 14 – Robert Simson ... [...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] |
Universal Gravitation
Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.It was shown separately that separated spherically symmetrical masses attract and are attracted as if all their mass were concentrated at their centers. The publication of the law has become known as the " first great unification", as it marked the unification of the previously described phenomena of gravity on Earth with known astronomical behaviors. This is a general physical law derived from empirical observations by what Isaac Newton called inductive reasoning. It is a part of classical mechanics and was formulated in Newton's work '' Philosophiæ Naturalis Principia Mathematica'' ("the ''Principia''"), first published on 5 July 1687. When Newton presented Book 1 of the unpublished text in April 1686 to the Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1687 In Science
{{Science year nav, 1687 The year 1687 in science and technology involved some significant events. Astronomy * The constellation ''Triangulum Minus'' is named by Johannes Hevelius. Biology * Alida Withoos at the house of Agnes Block makes a painting of the first pineapple bred in Europe. Medicine * Dutch physician Willem ten Rhijne publishes ''Verhandelinge van de Asiatise Melaatsheid na een naaukeuriger ondersoek ten dienste van het gemeen'' in Amsterdam, explaining Asian leprosy to the West. Physics * July 5 – Isaac Newton's ''Philosophiæ Naturalis Principia Mathematica'', known as the ''Principia'', is published by the Royal Society of London. In it, Newton describes his theory of universal gravitation, explains the laws of mechanics (including Newton's laws of motion), gives a formula for the speed of sound and demonstrates that Earth is an oblate spheroid. The concepts in the ''Principia'' become the foundations of modern physics. Births * October 14 – Robert Simson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1611 In Science
The year 1611 in science and technology involved some significant events. Astronomy * February 27 – Sunspots are observed by telescope by Frisian astronomers Johannes Fabricius and David Fabricius and Johannes publishes the results of these observations in ''De Maculis in Sole observatis'' in Wittenberg later this year. Such early discoveries are overlooked however, and the first sighting is claimed a few months later by Galileo Galilei and Christoph Scheiner. Mathematics * Johannes Kepler produces Kepler's conjecture on sphere packing."On the six-cornered snowflake". Technology * Completion of Cordouan lighthouse on the Gironde estuary (designed by Louis de Foix), the first wave-swept light. Births * January 28 – Johannes Hevelius, German astronomer (died 1687) * March 1 – John Pell, English mathematician (died 1685) * Willem Piso, Dutch physician and naturalist (died 1678) * Georg Marcgrave, German naturalist, explorer of Brazil (died 1644) Deaths * August 9 †... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, natural satellite, moons, comets and galaxy, galaxies – in either observational astronomy, observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, Sun, solar astronomy, the Star formation, origin or stellar evolution, evolution of stars, or the galaxy formation and evolution, formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole. Types Astronomers usually fall under either of two main types: observational astronomy, observational and theoretical astronomy, theoretical. Observational astronomers make direct observations of Astronomical object, celestial objects and analyze the data. In contrast, theoretical astronomers create and investigate C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1768 In Science
The year 1768 in science and technology involved some significant events. Biology * Steller's sea cow is hunted to extinction. * Josephus Nicolaus Laurenti becomes auctor of the class of reptiles through his ' on the poisonous function of reptiles and amphibians. He also publishes ' describing the olm, one of the first accounts of a cave animal in the western world. * Caspar Friedrich Wolff begins publication of "De Formatione Intestinarum" in the ''Mémoires'' of The Imperial Academy of Arts and Sciences (Saint Petersburg), a significant work in the science of embryology. * Lazzaro Spallanzani challenges the spontaneous generation of cellular life. Botany * Bougainvillea is first classified in Brazil by Philibert Commerçon, the botanist accompanying Louis Antoine de Bougainville's French Navy voyage of circumnavigation. * Henri-Louis Duhamel du Monceau's ''Traité des arbres fruitiers'' is published in Paris. Chemistry * March 17 – William Cookworthy is granted a patent fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scottish People
The Scots ( sco, Scots Fowk; gd, Albannaich) are an ethnic group and nation native to Scotland. Historically, they emerged in the early Middle Ages from an amalgamation of two Celtic-speaking peoples, the Picts and Gaels, who founded the Kingdom of Scotland (or ''Alba'') in the 9th century. In the following two centuries, the Celtic-speaking Cumbrians of Strathclyde and the Germanic-speaking Angles of north Northumbria became part of Scotland. In the High Middle Ages, during the 12th-century Davidian Revolution, small numbers of Norman nobles migrated to the Lowlands. In the 13th century, the Norse-Gaels of the Western Isles became part of Scotland, followed by the Norse of the Northern Isles in the 15th century. In modern usage, "Scottish people" or "Scots" refers to anyone whose linguistic, cultural, family ancestral or genetic origins are from Scotland. The Latin word ''Scoti'' originally referred to the Gaels, but came to describe all inhabitants of Scotland. Cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Simson
Robert Simson (14 October 1687 – 1 October 1768) was a Scottish mathematician and professor of mathematics at the University of Glasgow. The Simson line is named after him.Robert Simson University of Glasgow (multi-tab page) Life The eldest son of John Simson of Kirktonhall, in , Robert Simson was intended for the Church, but the bent of his mind was towards mathematics. He was educated at the University of Glasgow and graduated M.A. When the prospect opened of his succeeding to the[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 relates to the order of nature, or, in other words, to the regular succession of events." Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves. "Physics is one of the most fundamental of the sciences. Scientists of all disciplines use the ideas of physics, including chemists who study the structure of molecules, paleontologists who try to reconstruct how dinosaurs walked, and climatologists who study how human activities affect the atmosphere and oceans. Physics is also the foundation of all engineering and technology. No engineer could design a flat-screen TV, an interplanetary spacecraft, or even a better mousetrap without first understanding the basic laws of physic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speed Of Sound
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At , the speed of sound in air is about , or one kilometre in or one mile in . It depends strongly on temperature as well as the medium through which a sound wave is propagating. At , the speed of sound in air is about . The speed of sound in an ideal gas depends only on its temperature and composition. The speed has a weak dependence on frequency and pressure in ordinary air, deviating slightly from ideal behavior. In colloquial speech, ''speed of sound'' refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance: typically, sound travels most slowly in gases, faster in liquids, and fastest in solids. For example, while sound travels at in air, it travels at in water (almost 4.3 times as fast) and at in iron (almost 15 times as fast). In an exceptionally stiff material such as diamond, sound travels a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton's Laws Of Motion
Newton's laws of motion are three basic laws of classical mechanics that describe the relationship between the motion of an object and the forces acting on it. These laws can be paraphrased as follows: # A body remains at rest, or in motion at a constant speed in a straight line, unless acted upon by a force. # When a body is acted upon by a force, the time rate of change of its momentum equals the force. # If two bodies exert forces on each other, these forces have the same magnitude but opposite directions. The three laws of motion were first stated by Isaac Newton in his '' Philosophiæ Naturalis Principia Mathematica'' (''Mathematical Principles of Natural Philosophy''), originally published in 1687. Newton used them to investigate and explain the motion of many physical objects and systems, which laid the foundation for classical mechanics. In the time since Newton, the conceptual content of classical physics has been reformulated in alternative ways, involving diff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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