This demonstration tube is used for examination of the motions of electrons in the electromagnetic field.
The capacitor plates are placed completely outside the luminescent screen. The electrical deflection therefore occurs over a large area, and the parabola is clearly visible. Conversely, it requires a rather large deflection voltage – you can use the same supply as for the anode voltage if variation is not needed.
A set of Helmholtz coils (not included) allows magnetic deflection to be demonstrated as well.
The tube is used with the stand 508060 (not included).
Anode voltage up to 5 kV
Deflection voltage up to 5 kV
Filament voltage 6.3 V