A teltron tube (named for Teltron Inc., which is now owned by 3B Scientific Ltd.) is a type of cathode-ray tube used to demonstrate the properties of electrons. There were several different types made by Teltron including a diode, a triode, a Maltese Cross tube, a tube demonstrating electron diffraction, a simple deflection tube with a fluorescent screen, and one which could be used to measure the charge-to-mass ratio of an electron.
A teltron tube (named for Teltron Inc., which is now owned by 3B Scientific Ltd.) is a type of cathode-ray tube used to demonstrate the properties of electrons. There were several different types made by Teltron including a diode, a triode, a Maltese Cross tube, a tube demonstrating electron diffraction, a simple deflection tube with a fluorescent screen, and one which could be used to measure the charge-to-mass ratio of an electron.
Source: Wikipedia "Teltron tube" · CC BY-SA 4.0
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