Sir Isaac Newton

Sir issac newton was one of the greatest scientist who ever lived.Newton studied and simplified the work of other scientist. In doing so he:
•reviewed everything scientist had been learning
•Coupled it with his own observations and ideas,and
•identified four theories that described how the physical word worked.one of his law is called the law of gravity

In 1643, the Italian scientist Evangelista Torricelli invited the barometer.A barometer is a scientific instrument that measures air pressureBarometer are used to
Help forecast the weather.

Barometer