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Joseph Proust, born in Angers France in 1754, was most famous for proposing the law of definite proportions. His most memorable moments were becoming apothecary in chief to the Salpetriere in Paris, fighting with Berthollet, and when Napolean burned down his laboratory.

Henry Cavendish was born on October 10th in Nice, France. When he was 18 he went to Cambridge for 4 years but didnt graduate. Cavendish was so shy that he wrote notes to his servants on what he wanted for supper. He recognized that hydrogen gas was a distinct substance. He found out that water is made up of hydrogen and oxygen. The Cavendish experiment was when Cavendish measured the gravitational pull on a mass to find out the density of earth. He also figured out the density of many gases in the atmosphere. He was one of the richest men alive at that time because his parents died and gave him the inheritance.



Amedeo Avogadro was born in Turin, Italy, on 9th August 1776. He was born into a family of sucessful lawyers, and he himself tried to establish a successful legal career. Avogadro was interested in natural philosophy. In 1800, he began studing mathematics and physics. He published his hypothesis in 1811, now called Avogadro's law. Avogadro died on July 9th, 1856.



Robert Millikan was born on March 22, 1868 in Morrison, Illinois. He went to Maquoketa High School in Iowa and then went to Oberlin College. While he was at Oberlin, he taught himself the elements of Physics because there was no one smart enough to teach him.He obtained his masters. He then went to Germany to study and after being called back to the U.S. he was offered a teaching positon at Chicago. He was also the author of many physics textbooks. Millikan was known for the Oil-Drop Experiment. He also named cosmic rays.



J. J. Thomson attended Owens college at only 14. JJ Thomson's biggest acheivement would definitely be his discovery of the electron, in 1897. He discovered this while experimenting with cathode tubes, in an attempt to study electric charge. He later became a lecturer and professor.



The English chemist John Dalton (1766-1844) provided the beginnings of the development of a scientific atomic theory, thus facilitating the development of chemistry as a separate science.John Dalton is the youngest three childern that survied. He attended school till the age of 11 and then at 12 became a teacher. He came up with the atomic theory.



Dimitri Mendeleev was the last of 14 children. Dimitris father went blind and couldn't support his family anymore, his mother had started a glass factory just to make ends meet. But when Mendeleev was finishing high school his father had died and the glass shop burnt down. Thankfully all of her other children were out on there own, so she took Dimitri to St. Petersburg and worked never ending till she could pay for her son to go to college!

He was born on August 30, 1871, in Nelson, New Zealand, the fourth child and second son in a family of seven sons and five daughters. He received the B.Sc. degree the following year in 1894. B.Sc Degree- Bachelor of Science. That same year he was awarded an 1851 Exhibition Science Scholarship. His scholarship allowed him to go to Trinity College, Cambridge, as a research student at the Cavendish Laboratory. He invented a detector for electromagnetic waves. In 1898 he reported the existence of alpha and beta rays in uranium radiation and indicated some of their properties. In 1899 Rutherford discovers a gas...Later to be named RADON. He won the Nobel Prize in Chemistry.

Antoine Laurent Lavoisier can be remembered most for his discovery in the role oxygen plays in combustion. He was born in Paris on August 26, 1743. The son of a wealthy Parisian lawyer, he completed his law degree with his families wishes. In 1765, he wrote and published a paper on how to improve the street lighting in Paris. He was elected into the Royal Academy of Science in 1768. He was also a investor and administrator of Ferme Generale, a private tax collection company. Lavioster attended the college Mazarin from 1754 to 1761. There he studied chemistry, botany, astronomy and mathmatics. In 1771, when he was 28, he married a 13 year old girl. She played a crucial role in Lavoister's science career, translating English words into French for him. Lavioster later received his law degree and was admitted to the bar. But, he never practiced as a lawyer.

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