Cold cathode tube

A cold cathode tube describes an electron tube whose cathode is able to send out electrons even in an unheated (therefore cold) state.

The cold cathode tubes include:

• Fluorescent tubes ,
• Glow lamps ,
• Geissler tubes ,
• Shadow cross tubes and related electron tubes,
• Vircator .

This is a disambiguation page for differentiating between several terms identified with the same word.