Mon February 11, 2013 By:

1. Ionisation of gases in the discharge tube proved that atoms have subatomic particles.

Expert Reply
Thu February 14, 2013
Atoms were thought to be the smallest possible division of matter until 1897 when J.J. Thomson discovered the electron through his work on cathode rays. He carried out ionisation of gases in the discharged tube. So, this is how a subatomic particle was discovered.
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