|Jan12-12, 09:24 AM||#1| When a high voltage is applied across
the electrodes of the discharge tube, and the pressure of the
gas inside the tube is lowered, the electrical energy knocks out
some of the electrons from the atoms. These constitute the
cathode rays. How does electrical energy knocks out electrons is
something I want to know. Please explain. physics news on
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life into focus |Jan12-12, 11:51 AM||#2| Usually the electrons
are emmited due to thermal transmission (hot cathode) similar to
common vacuum tube technolgy. Wiki articles: As a bit of trivia,
there was a CRT used as a memory storage device, called a
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Experiment.. some missunderst