User:Clarknova/sandbox/Button lamp

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A Button Lamp or Tesla Button Lamp is a form of high-frequency incandescent light bulb. In a button lamp a carbide nub or button is heated to incandescence by the kinetic energy of vibrating gas ions.

The button lamp was patented in 1894 by Nikola Tesla, but never saw widespread commercial use. It was one of many devices Tesla intended to be used with a high-frequency, wireless power and telegraphic system.