Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Gabor, Dennis to Ghetto

Geissler tube

gas electrodes

Geissler tube, tube lamp invented by Heinrich Geissler in 1858. It consists of a glass tube containing gas and air under low pressure, with metal electrodes at each end. When electricity is applied to the electrodes, a current passes through the tube and causes the gas within to glow.

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