PURPOSE: To demonstrate the deflection of an electron beam by an electric field.
DESCRIPTION: The electron beam starting at the rear of the tube is seen on the front fluorescent screen in the standard way. Holding a charged rod near the tube creates an electric field which deflects the beam. Connecting a battery to contacts at the back of the tube puts an electric field on two sets of internal deflection plates, causing either horizontal or vertical deflection of the beam.
REFERENCES: (PIRA unknown.)
EQUIPMENT: Oscilloscope CRT with charging materials and battery with leads.
SETUP TIME: None.
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