As the Ebola virus outbreak continues to run amok in West Africa, scientists are looking ahead to the possibly pivotal use of experimental drugs and vaccines against the disease. It will take months to test, produce and deploy the therapies. But researchers hold out hope that these products — even incompletely vetted — might help to turn the tide against an illness that has defied public health efforts to bring it under control.

Wednesday, 7 September 2011

Greatest Physicist


Sir Isaac Newton
Head and shoulders portrait of man in black with shoulder-length grey hair, a large sharp nose, and an abstracted gaze
Godfrey Kneller's 1689 portrait of Isaac Newton
(age 46)
Born25 December 1642(1642-12-25)
[NS: 4 January 1643][1]
Woolsthorpe-by-Colsterworth
Lincolnshire, England
Died20 March 1727(1727-03-20) (aged 84)
[NS: 31 March 1727][1]
Kensington, Middlesex, England
ResidenceEngland
NationalityEnglish
FieldsPhysics, mathematics, astronomy, natural philosophy, alchemy, Christian theology
InstitutionsUniversity of Cambridge
Royal Society
Royal Mint
Alma materTrinity College, Cambridge
Academic advisorsIsaac Barrow[2]
Benjamin Pulleyn[3][4]
Notable studentsRoger Cotes
William Whiston
Known forNewtonian mechanics
Universal gravitation
Infinitesimal calculus
Optics
Binomial series
Newton's method
PhilosophiƦ Naturalis Principia Mathematica
InfluencesHenry More[5]
Polish Brethren[6]
InfluencedNicolas Fatio de Duillier
John Keill
Signature
Is. Newton
Notes
His mother was Hannah Ayscough. His half-niece was Catherine Barton.

Sir Isaac Newton PRS (25 December 1642 – 20 March 1727 [NS: 4 January 1643 – 31 March 1727]) was an English physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian.
His monograph PhilosophiƦ Naturalis Principia Mathematica, published in 1687, lays the foundations for most of classical mechanics. In this work, Newton described universal gravitation and the three laws of motion, which dominated the scientific view of the physical universe for the next three centuries. Newton showed that the motions of objects on Earth and of celestial bodies are governed by the same set of natural laws, by demonstrating the consistency between Kepler's laws of planetary motion and his theory of gravitation, thus removing the last doubts about heliocentrism and advancing the Scientific Revolution. The Principia is generally considered to be one of the most important scientific books ever written.
Newton built the first practical reflecting telescope and developed a theory of colour based on the observation that a prism decomposes white light into the many colours that form the visible spectrum. He also formulated an empirical law of cooling and studied the speed of sound.
In mathematics, Newton shares the credit with Gottfried Leibniz for the development of differential and integral calculus. He also demonstrated the generalised binomial theorem, developed Newton's method for approximating the roots of a function, and contributed to the study of power series.
Newton was also highly religious. He was an unorthodox Christian, and wrote more on Biblical hermeneutics and occult studies than on science and mathematics, the subjects he is mainly associated with. Newton secretly rejected Trinitarianism, fearing to be accused of refusing holy orders.

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