Sub-Atomic Particles –Electrons

The video explains how gases conduct electricity under high potential difference and reduced pressure using a discharge tube. It describes the effects of varying pressure on the tube, leading to the discovery of cathode rays. JJ Thomson's experiments revealed that cathode rays are negatively charged particles, later identified as electrons. Thomson measured the charge-to-mass ratio of electrons, while Millikan's oil drop experiment determined the electron's charge. These findings helped establish the fundamental properties of electrons.

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