Hallwachs effect

(redirected from Wilhelm LF Hallwachs)
Also found in: Medical.

Hallwachs effect

[′häl‚väks i‚fekt]
(electronics)
The discharge of a negatively charged metal plate caused by photoemission when the plate is exposed to ultraviolet light.
(physics)
The ability of ultraviolet radiation to discharge a negatively charged body in a vacuum.