Photograph of the photoelectric effect in zinc

Apparatus:
Braun electroscope, rubber rod, fur, UVA/B source

Description:
Using the rubber rod and fur, negative charge is transferred to the electrosope. Exposing the electroscope to UVB causes the electroscope to lose its charge.
A pane of glass my be used to block the UVB.

PIRA 7A10.10

This equipment may ablso be used to show photoelectric charging. With the clean zinc plate on an uncharged electroscope and illuminated with the UV light, a glass rod rubbed with silk may be used to charge the electroscope by induction.

PIRA 7A10.12