# Dember effect

> English word · Noun

## Definitions
1. The effect that occurs when the electron current from a cathode subjected to both illumination and a simultaneous electron bombardment is greater than the sum of the photoelectric current and the secondary emission current.

## Etymology
Discovered in 1925 by Harry Dember (1882–1943).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/dember-effect