Thomas Alva Edison was both a scientist and an inventor.He held a world record of 1093 patents for inventions such as phonograph (1877),motion picture camera (1888) and the Incandescent light bulb (1879) etc.Thomas Edison got a Noble Prize on November 6, 1915.

Alexander Graham Bell was an eminent scientist and also an inventor.Alexander Graham Bell invented a phone in 1876 at the age of 29.Other inventions are Optical telecommunications, hydrofoils and aeronautics.

Louis Pasteur was a French chemist and Microbiologist.Louis Pasteur invented "Pasteurization" and "Germ theory of disease".He is famous for the development of vaccines and he created the first vaccine for rabies and anthrax.

Sir Isaac Newton is a great physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian.Isaac Newton invented the reflecting telescope in October 1669.He is well known for Universal gravitation,the three laws of motion,Newtonian mechanics,Infinitesimal calculus,Optics,Binomial series,Newton's method,Philosophiae Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy").

Albert Einstein was a great theoretical physicist.He discovered the law of the photo electric effect.In 1921 he received the Nobel Prize in Physics .He is well known for General relativity and special relativity,Photoelectric effect,Theory of Brownian Motion, Mass-energy equivalence, Einstein field equations.

Galileo Galilei commonly known as Galileo,he was an Physicist,astronomer,mathematician and philosopher.Galileo
played a major role in the Scientific Revolution.