Tuesday, March 17, 2009

ISSAC NEWTON



Newton's 1st Law Page
Godfrey Kneller's 1689 portrait of Isaac Newton (aged 46)
Born 4 January 1643(1643-01-04)
[OS: 25 December 1642][1]
Woolsthorpe-by-Colsterworth
Lincolnshire, England
Died 31 March 1727 (aged 84)
[OS: 20 March 1726][1]
Kensington, Middlesex, England
Residence England
Citizenship English
Nationality English (British from 1707)
Fields Physics, mathematics, astronomy,
natural philosophy, alchemy,
theology
Institutions University of Cambridge
Royal Society
Royal Mint
Alma mater Trinity College, Cambridge
Academic advisors Isaac Barrow[2]
Benjamin Pulleyn[3][4]
Notable students Roger Cotes
William Whiston
Known for Newtonian mechanics
Universal gravitation
Calculus
Optics
Influences Henry More
Influenced Nicolas Fatio de Duillier
John Keill
Religious stance Arianism; for details see article
Signature
Sir Isaac Newton's signature


Isaac Newton (England, 1642-1727) derived mathematical laws of mechanics
that seemed perfection itself. Although superseded by Einstein's theory of General Relativity, Newton's equations are still used to calculate all but the most extreme motions. Newton also shares the credit with Leibniz for the development of calculus in mathematics.

Newtons's First Law
Every object continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.

Newton's Second Law states that an applied force, \vec{F}, on an object equals the rate of change of its momentum, \vec{p}, with time. Mathematically, this is expressed as

 \vec F = \frac{\mathrm{d}\vec p}{\mathrm{\mathrm{d}}t} \, = \, \frac{\mathrm{d}}{\mathrm{d}t} (m \vec v) \, = \, \vec v \, \frac{\mathrm{d}m}{\mathrm{d}t} + m \, \frac{\mathrm{d}\vec v}{\mathrm{d}t} \,.
Newton's Third Law states that for every action there is an equal and opposite reaction

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