Was an Italian astronomer and physicist. He also studied motion science. In 1609 he invented the first astronomical telescope.

Was an Irish chemist. Experimented on air pressure, which is known as our atmosphere. He was also part of the Royal Society.

He was a German physicist from 1686-1736. He invented two things: the Fahrenheit scale and the thermometer. He also found out that 32 degrees are the freezing point of water.

He was a Swedish astronomer. He is known for making the temperature scale. His temperature set the point for the freezing point of water to 100 -.

He was an American astronomer and politician. He invented various things, one of his inventions was the bifocal spectacles. He also signed the Declaration of Independence in 1776.

He was an ecologyst, a person who studies plants. He was born in Sweden, he also taught at Uppsala University. He also studied and named many plants.