Sir Isaac Newton
Scientist and Mathematician,
1642 - 1727

This article is about Sir Isaac Newton background which is he is a popular scientist and mathematician in past of time. Newton was accomplishments in mathematics, optics, and physics laid the foundations for modern science and revolutionized the world that an important person for this world. He was born between 1642 or 1643 in Woolsthorpe, England. In education, Newton was educated at Trinity College, Cambridge where he lived from 1661 to 1696. During this period he produced the bulk of his work on mathematics. In 1696 he was appointed Master of the Royal Mint, and moved to London, where he resided until his death. Newton invented integral calculus, and jointly with Leibnitz, differential calculus and also calculated a formula for finding the velocity of sound in a gas. He defined the laws of motion and universal gravitation which he used to predict precisely the motions of stars, and the planets around the sun in impact on theoretical astronomy. Newton found science a hodgepodge of isolated facts and laws, capable of describing some phenomena, but predicting only a few. Newton died in London on March 20, 1727 and was buried in Westminster Abbey, the first scientist to be accorded this honour.


Alexander Graham Bell
Inventor
1847 -1922

Alexander Graham Bell is person that emerge a revolution for a communication device for "transmitting vocal or other sounds telegraphically.” He is so famous inventor in this world which is as icon to for all inventors. Bell was born on March 3, 1847 in Edinburgh, Scotland. Bell's telephone grew out of improvements he made to the telegraph. He had invented the "harmonic telegraph" which could send more than one message at a time over a single telegraph wire. Then, along with his assistant Thomas A. Watson, Bell constructed instruments that transmitted recognizable voice-like sounds. In 1876, three days after he received his first patent, Bell and Watson, located in different rooms, were about to test the new transmitter described in the patent. The first telephone company, Bell Telephone Company, was founded on July 9, 1877. After that, he invented the photophone-transmission of sound on a beam of light, which was a precursor of fiber-optics. He also invented techniques for teaching speech to the deaf. Bell was granted 18 patents in his name, and 12 he shared with collaborators.

MOHAMAD AMAR B JAIRANI
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