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J. J. Tomson was the discoverer of the electron. Using a cathode ray tube he found a particle that was deflected by a positively charged plate. Today we call cathode ray tubes televisions (at least the ones with picture tubes). He called the new particle a "corpuscle". Today we call it an electron (derived from the Greek word for "amber" which can be used to generate static electricity). Based on his research, he reasoned that the new particle had a negative charge. He proposed that an atom was like a mushy ball with raisins (electrons) stuck in the surface. Just like a tasty English holiday treat called Plum Pudding. Since atoms are usually electrically neutral (no charge), he reasoned that the mushy part had a positive charge (which would cancel the negative charge of the electron). Americans would say it was more like the electrons were Chocolate Chips in a scoop of chocolate chip ice cream or the chocolate chips in a scoop of chocolate chip cookie dough. (the repeated use of chocolate has nothing to do with the model). LA Dacanay

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