Joseph john thomson
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Joseph John Thomson. Kristin Patterson. J.J.’s Early Life. Joseph John (J.J.) Thomson was born in a suburb of Manchester, England in 1856. His father was a bookseller and he entered Owens College at only 14 years old.

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Joseph John Thomson

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Joseph john thomson

Joseph John Thomson

Kristin Patterson


Joseph john thomson

J.J.’s Early Life

  • Joseph John (J.J.) Thomson was born in a suburb of Manchester, England in 1856.

  • His father was a bookseller and he entered Owens College at only 14 years old.

  • His father wanted him to become an engineer, but still supported him when he wanted to learn about chemistry and physics.


Joseph john thomson

ELECTRONS

  • In 1897, J.J. came to a conclusion that “all matter, whatever its source, contains particles of the same kind that are much less massive than the atoms of which they form a part.”

  • He called these corpuscles, but we know them today as ELECTRONS.


Joseph john thomson

  • J.J. became interested in the nature of cathode rays. Cathode rays are a stream of electrons emitted by the cathode in electrical discharge tubes.

  • The rays were said to be electrified particles. He concluded that these particles were present in all kinds of matter.


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