Franck Hertz Experiment Set

The IEC Franck Hertz Experiment Board consists of an Electron valve configured to behave as a miniature laboratory to detect the behaviour of Xenon gas atoms when bombarded with electrons.The two rotary controls provide the following adjustments.

Volts Adjust: controls the voltage on the Control Grid  from slightly negative to the Cathode up to positive to the Cathode.

Filament Temp: controls the voltage to the heater which controls the heating of the Cathode and controls the quantity and energy of the electrons boiled off the surface of the Cathode