ISAC NEWTON

    ISAC NEWTON

 

               Isac Newton was born on 25^th December 1642 at Woolsthrope,Lincolnshire in England. He was an English Mathematician, Astronomer, theologian, author and physicist. He was recognised as a key figure in the scientificevolution. His first book Mathematical Principles of Natural Philosophy published in 1687,laid foundation for Classical Mechanics. He was the founder of lawsof Motion andUniversal Gravitation.

He was a fellow of Trinity College and Maths Professor at the University of Cambridge. He was a devout, but unorthodox, Christian who privately rejected the doctrines of the Trinity. He refused to take the Holy orders from the church of England.

Beyond his work on mathematical science, he dedicated much of his time to the study of alchemy and biblical chronology, but most of his works in those areas remain unpublished until long after his death. He was a member of Parliament for the University of Cambridge and also served as a president of the Royal Society. He used his mathematical description of gravity to prove Kepler’s laws of planetary motion. Newton built the first practical reflecting telescope and developed a sophisticated theory of colour based on the observation that a prism separateswhite light into the colours of visible spectrum. His work on light was collected in his highly influential book Optics,published in 1704.

NEWTON’S LAW OF MOTION :-

Newton’s laws of Motion are as follows,

Newton’s first law:-

                           The first law states that every object in a state of uniform motion will remain in that state of Motion unless an external force acts on it. This law is also called as the law of Inertia and was pioneered by Galileo.

Newton’s second law:-

                              The second law states that force equals mass times of acceleration. The equation follows

F(t) = m. a(t).

               It actually implies the first law, since when f(t) =0 (no applied force) the acceleration a(t)=0, implying a constant velocity v(t) (the velocity is simply an integral with respect to time of a(t) =v(t)).

Newton’s third law:-

                              The third law states that every action has an equal and opposite reaction. It implies the conservation of momentum. When one object pushes a second object at some point of contact using an applied force there must be an equal and opposite force from the second object that cancels the applied force.

NEWTON’S LAW OF UNIVERSAL GRAVITATION :-

                                                                                              This law states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.

               After contributing so many valuable standards to the science Newton died on 20^th March 1727 at his age of 84. He is best known as The Genius Who Explained Gravity. His body was buried in the Westminster Abbey.

Written by,

           Nithya Sree., 

           I B.A English.,

           KG CAS.,

           Coimbatore...