n the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
These Tiles Are Made Of Your Grandma's Old TV Set What to do with 860 million pounds worth of cathode ray tubes? Grind them up and tile a bathroom with them. Before the invention of super-thin liquid crystal displays, if you wanted to watch television or look at something on a computer, you needed a cathode ray tube (CRT). Big and bulky, CRTs displayed images by using an electron gun that could shoot beams of light onto a fluorescent screen on ...
April 28, 2014 - Fast Company Magazine