28 jul 1844 ano - J.J Thomson continues Dalton's work on subatomic particles

Descrição:

J.J Thomson added to Dalton's model by being credited as the first person to discover a subatomic particle. he named these electrons, and they were smaller than the atom itself.
photo credit:
http://science.jrank.org/article_images/ep201102/science/science982.jpg

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