Page "Cathode ray" Paragraph 2
from
Wikipedia
In 1897 British physicist J. J. Thomson showed the rays were composed of a previously unknown negatively charged particle, which was later named the electron.
Cathode ray tubes ( CRTs ) using a focused beam of electrons deflected by electric or magnetic fields, create the image in a classic television set.
Page 1 of 1.
1.884 seconds.