JJ Thompson

By: Tyler Kelly

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JJ Thomson Biography/His Duty With The Atomic Theory (Taken From Blogger)

Joseph John Thomson was born in Cheetham Hill, England on December 18, 1856. He enrolled in Owens College in Manchester in the year of 1870 and in 1876 he enrolled in Trinity College. Thomson married a women by the name of Rose Paget (a former student of his). They would have two children, one daughter named Joan and a son named George Paget Thomson (who just like his dad he won a Nobel Prize himself). In 1907, JJ won a Nobel Prize. In 1912, he would leave the scientific field to become a master at Trinity College. He died on August 30, 1940 in Cambridge at the age of 80. He was buried in the Nave of Westminster Abbey, joining many other famous scientist such as Issac Newton and Charles Darwin.

JJ Thomson provided many great strides towards the atomic theory. In 1897, Thomson discovered the electron. He experimented with Crooks, or cathode ray tube. He studied that the cathode rays were negatively charged. He developed the plum pudding model. The model is supposed to represent what the atom is supposed to look like with electrons. The model of the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged "plums" surrounded by positively charged "pudding". Image looks like a plus sign with electrons around it.

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Cathode Rays Lead to Thomson's Model of the Atom
The Discovery of the Electron (2 of 15)