Рўс‚р°с‚сњрё Рѕр° С‚рµрјсѓ: "isaac" -

A prolific American author and biochemistry professor, Asimov was one of the "Big Three" science fiction writers.

: Demonstrated that white light is a mixture of colors using a prism and invented the reflecting telescope .

: Formulated the Three Laws of Motion and the Law of Universal Gravitation , which explained planetary orbits and terrestrial gravity.