Photoelectric Effect
Definition
The photoelectric effect is the phenomenon where electrons are emitted from a material when it absorbs photons (light particles) with sufficient energy. It demonstrates that light behaves as both a particle and a wave.
Analogy
Imagine you have a vending machine that dispenses candy when you insert coins. In this analogy, the candy represents emitted electrons, and the coins represent photons. Just like the vending machine only releases candy when you insert enough coins, electrons are only emitted from a material when it absorbs photons with enough energy.
Related terms
Threshold Frequency: The minimum frequency of light required to cause the photoelectric effect in a particular material.
Work Function: The minimum amount of energy needed to remove an electron from the surface of a material.
Photons: Discrete packets or quanta of electromagnetic radiation (such as light), which carry energy proportional to their frequency.
"Photoelectric Effect" appears in:
Subjects (1)
Study guides (1)
Resources
© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.