J. B. Johnson
Abstract
A sensitive cathode ray oscillograph tube is described which operates at a low voltage. The electron stream comes from a thermionic cathode, and is focused by the action of the ionized gas in the tube. Illustrations show examples of the use of the tube.
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A sensitive cathode ray oscillograph tube is described which operates at a low voltage. The electron stream comes from a thermionic cathode, and is focused by the action of the ionized gas in the tube. Illustrations show examples of the use of the tube.
Key concepts: Oscillograph, Cathode, Hot cathode, Thermionic emission, Cathode ray tube, Tube (container), Cold cathode, Materials science