Joseph John Thomson (1856-1940)

Thomson was a British physicist.
He won the Nobel Prize for Physics in 1906 for his work on gases. He also discovered the electron.
In 1895, he investigated the rays produced when an electric current passed through a vacuum in a glass tube.
The rays came from the negative end of the tube (the cathode)and were called cathode rays.
He showed that the rays consisted of particles (electrons) which were negatively charged and are found in every atom.


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