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__Joseph Black 1756 ​__This picture from [] Joseph Black was born April 16, 1728 and he died November 10, 1799. He was born in Bordeaux France and was the son of merchant John Black. Joseph Black left his home at the age of twelve to study Latin and Greek in Belfast. Years later, he educated in medicine at Glasgow University. He spent most of his life as a profesor of Chemistry. Black was the first to notice that heat and temperature are diffent things. He came up with several ideas like heat is energy which can be transported as molecules vibrate, and move and collide into each other. Also, that temperature is a measurement of the average motion of kinetic energy of the molecules. He discovered latent heat which changes a state, this is when a solid becomes a liquid or a liquid becomes a gas.

__Antoine Lavoisier 1787__ Antoine Lavoisier was born August 26, 1743 in France he later died on May 8, 1794. Lavoisier was a French chemist who discovered the law of conservation of mass. During school he first studied law but later pursued science. He was beheaded because he was one of the French tax collectors, so he was declared a traitor during the Reign of Terror by revolutionists in 1794. Lavoisier developed the atomic theory of matter stating that matter is not destroyed nor is it created, and the only thing that changes would be its form. He also developed the idea of naming compounds from elements. He also invented a sensitive balance used to help him in his chemical experiments. This picture from []

__Charles Augustine de Coulomb 1780's__ Charles Augustine de Coulomb was born on July 14, 1736 in Augoulene France and died August 23, 1806. He was a trained engineer with the rank of Lieutenant in the Corps de Genie. He was first posted in the West Indies where he fell victim to many attacks by the English. He was posted in many different areas over the next twenty years. He was captured by the English in 1762, but was returned to France under the terms of the Treaty of Paris in 1763. Between 1785-1787 he performed a series of experiments involving electric charges, and eventually established Coloum's law that described the relationship between force charge and distance. This picture from []