- #1
shanewatson
- 8
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why current does not flow through gas in discharge tube at ordinary pressure?
Cathode rays are streams of negatively charged particles that are produced when high voltage is applied to a partially evacuated glass tube. These particles were later identified as electrons.
Cathode rays were first discovered by German physicist Julius Plücker in 1859. However, their true nature as electrons was later confirmed by British scientist J.J. Thomson in 1897.
Plücker discovered cathode rays by observing the glowing beam of light that appeared when high voltage was passed through a partially evacuated glass tube. Thomson further studied these rays using a cathode ray tube and was able to determine their properties.
The discovery of cathode rays led to the understanding of the nature of electricity and the existence of subatomic particles. This discovery also paved the way for further research and developments in the field of electronics and modern technology.
The discovery of cathode rays showed that atoms were not indivisible, as previously believed. Thomson's experiments with cathode rays led to the development of the "plum pudding" model of the atom, which proposed that atoms were made up of positively charged material with negatively charged electrons scattered throughout.