Thomas Alva Edison (1847-1931) was born in Milan, Ohio and was raised in Port Huron, Michigan. He was an American inventor and businessman who developed many devices that greatly influenced life around the world, including the phonograph and a long lasting light bulb. Thomas Alva Edison is known as the Wizard of Menlo Park. He obtained 1093 patents. He has been popularly known as “Wizard of Menlo Park” His famous quoting is “Genius is one percent inspiration and ninety-nine percent perspiration”

Albert Einstein (1879-1955) was born into a Jewish family in Ulm. Wurttemberg, Germany. He is best known for his theory of relativity and specifically mass-energy equivalence, E= mc2 Einstein received the 1921 Nobel Prize in Physics “for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect.” The fourth dimension in physics was introduced by Albert Einstein.

Megh Nad Saha was Bengali Indian astrophysicist. He was born on 6 October, 1893 in Shaoratoli village near Dhaka in current day Bangladesh. He invented an instrument to measure the weight and pressure of solar rays. He produced the famous equation which he called ‘equation of the reaction – isobar for ionization’ which later became known as Saha’s “Thermo- Ionization Equation” He became the Member of Parliament in 1951.

Ennackal Chandy George Sudarshan (E.C.G.Sudarshan) is a prominent Indian American physicist, author, and professor at The University of Texas at Austin. Sudarshan’s most significant work might be his contortion to the field of quantum optics. He was the first to propose the existence of tachyons, particles that travel faster than light. In 2007, Sudarshan was awarded the Padma Vibhushan   by the Government of India, the highest civilian award after the Bharat Ratna.

Sir Isaac Newton was born on 25 December 1642 at Lincolnshire, England. He studied in Trinity College, came a Professor of Mathematics. Newton wrote two important books-Principia (1687) and Opticks (1704) .The first book describes the theory of universal gravitation. According to Newton’s law of gravitation, every object in this universe attracts every other object. This force of attraction is known as gravitation. The second book contained Newton’s ideas of light and color and his optical research. Isaac Newton died on 31 March 1727.

Chandrasekhara Venkata Raman was an Indian physicist whose work was influential in the growth of science in India. He was the recipient of the Nobel Prize for light traverses a transparent martial, some of the light that is deflected changes in wavelength. This phenomenon is now called Raman scattering and is the result of the Raman Effect. He was born in November 7, 1888, Trichinopoly, India and died on November 21, 1970, Bangalore.

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