In a cathode ray tube experiment, the CRT would be the area of interest and electrons are ejected from the cathode into the tube and are incident on the glass behind the anode. The statement that cathode is the electrode where reduction takes place is slightly misleading. This is because oxidation and reduction take place simultaneously (have to).
Cathode "rays" had been known for some time before Thomson. They were first observed as experiments in gas discharge tubes started to exploit better and better vacuums (the early experiments observed the varying forms of discharge in low pressure gases; cathode rays only become significant when there is very little gas left in the tubes).
Why cathode rays are produced if pressure of the gas discharge tube is lowered to about $10^{-4}$ atm? How bombardment of glass of gas discharge tube from cathode ray result in a faint glow?
insider.si.edu: J.J. Thomson's cathode ray tube #3, replica of Cavendish Lab apparatus
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. J.J. Thomson's cathode ray tube #3, ...
This is the Scope Clock, from designer David Forbes, and if you’re into retro-tech chic gadgets, this thing will beat any nixie clock hands down. Just look at it: a cathode ray tube encased in acrylic ...
THE use of the cathode ray tube for television reproduction was suggested by A. A. Campbell Swinton so early as 1908, and although many alternative schemes were explored in the succeeding twenty-nine ...
electrons - How did J. J. Thomson prove that the cathode rays were made ...