About this page

Cathode-ray tube (CRT) | Britannica

https://britannica.com/technology/cathode-ray-tube

“Cathode-ray tube (CRT), Vacuum tube that produces images when its phosphorescent surface is struck by electron beams. CRTs can be monochrome (using one electron gun) or colour (typically using three electron guns to produce red, green, and blue images that, when combined, render a multicolour” (the page’s own description)

Topic
Reference
Quality
Not rated yet
Language
Not detected yet
Text on page
744 characters
Page size
60 kB
Answered
OK (200), HTML
Last read
6 Jul 2025
In our index since
6 Jul 2025
Safe search
Not checked yet
Links to it
Not counted yet

“Not rated yet” and similar notes are shown on purpose: we say what we haven't measured, so the page doesn't look emptier or better than it is.