1700-1800+(VC)


 * Joseph Black **



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-Joseph Blacks theory of fixed air led to the Phlogiston Theory, which was later accepted as the atomic theory. Clearly proving his immense efforts and contributions toward the atom.

Joseph Black was a Scottish physician born April 16th 1728 in Scotland. He is known for his discoveries of latent heat,and C02. He was a professor of medicine at the University of Michigan. He also served as lecturer in Chemistry. He died on December 6, 1799.
 * Joseph Black's Bio**

Antoine-Laurent de Lavoisier
"AKA The Father of Modern Chemistry"



http://tentangbiografi.files.wordpress.com/2010/01/antoine_lavoisier.jpg

-He stated the first known law of conservation of mass, recognized and named oxygen/hydrogen, helped construct the metric system, abolished the phlogiston theory. On top of all of these discoveries, he also discovered that, although matter may change its form or shape, its mass always remains the same. Lavoisier clarified the concept of an element as a simple substance that could not be broken down by any known method of chemical analysis. He also devised a theory of the formation of chemical compounds from elements.

Lavoisier was born in Paris on August 26, 1743. He was the son of a very prosperous lawyer and was educated at the College des Quatre Nations. He studied a broad range of academics and was expected to follow in his father's footsteps. He obtained his license to practice law in 1764 before he decided to turn to a life of science. From 1763-1767 he studied geology. He was elected into the Royal Academy of Science in 1768. He died on May 8, 1794.
 * Antoine-Laurent de Lavoisier's Bio**

Charles-Augustin de Coulomb


http://www.ejge.com/People/Coulomb/coulomb.jpg

-He explained that like (or similar) fluids repelled and unlike (or different) fluids attracted. This key fact was important in the development of The Theory of Absolute Measurement and also had a huge impact on electrical potential.

He was born in Angouleme, France on June 14, 1736 and was a French physicist. He is best known for devoloping his own law called "Coulomb's law". This law stated the definition of electrostatic force of attraction and repulsion. The SI unit of charge was named coulomb after him. He, like Lavoisier, studied at the prestigious College des Quatre-Nations. From 1757-1759 he joined his father's family in Montpellier and took part in the work of the academy of the city. Coloumb returned to Paris in 1759 where he entered the military school at Mezieres. He died on August 23, 1806.
 * Charles- Augustin de Coulomb's Bio**__