Alexander Graham Bell was born in 1847 in Edinburg, Scotland. His father was an expert in phonetics, the study of the sounds of languages. As a boy, Alexander became interested in sounds and speech. In 1870 the Bells decided to emigrate to America. They lived in Boston, where Alexander taught in a school for the deaf. There he began experimenting with a machine to help the deaf hear. While experimenting with this machine, Bell had an idea. Why not use electricity to send the human voice from one place to another? Bell began work on a new invention. Four years Bell and his assistant, Thomas Watson, worked day and night. They rented rooms in a boarding-house. Bell was on one floor, and Watson was on another. They tried to send speech through a wire. Finally, on March 19, 1876, Watson heard these words very clearly." Mr.Watson, come here. I want you." Watson rushed upstairs, ran into Bell's room, and shouted, " I heard you." They didn't know that one day this talking machine would become the telephone and would change people's lives.
Charles Darwin (1809-1882) is an English naturalist known for the study of evolution. His evolutionary theory is contained in books. On the Origin of Species by Means of Natural Selection (1859) and The Descent of Man, and Selection in Relation to Sex (1871). Darwin's theory of evolution greatly influenced science and religion of his time.
Isaac Newton (1641-1727) is a mathematician, physicist and astronomer, who, basides other work, completed the findings of Johannes Kepler and Galileo Galilei. His main contribution to physics was the formulation of three fundamental law of mechanics leading to the law of gravitation. As a mathematician he invented the infinitesimal calculus. He also extended the understanding of colour and light and examined the mechanics of planetary motion.
James Walt a Scottish engineer who made important improvements to the steam engine. He established the first factory for the steam engines production.
Thomas Alva Edison was born in Ohio in 1847. He was not a very good student but was keen on scientific work. The most important invention of Edison is the electric bulb.
Walt Disney American film producer who created the first animated cartoon films. Disney is the author of such cartoon characters as a Mickey Mouse, Donald Duck, Pluto.