Entity: PHOTOELECTRIC-EFFECT
The photoelectric effect refers to the emission of electrons from a material when it absorbs electromagnetic radiation, such as light. This phenomenon has significant implications in physics and chemistry.
PHOTOELECTRIC-EFFECT
Etymology
The term 'photoelectric effect' originates from the combination of 'photo-' meaning light and 'electric' referring to electricity.
Definition
The photoelectric effect is the emission of free electrons from a material when it absorbs electromagnetic radiation, typically light.
Historical Context
The photoelectric effect was first observed by Heinrich Hertz in 1887 and later explained by Albert Einstein in 1905, who proposed that light consists of discrete packets of energy called photons.
Cultural Significance
The photoelectric effect has played a crucial role in the development of quantum mechanics and solid-state physics, leading to advancements in technology such as solar cells and photodetectors.
Related Concepts
Other related concepts include quantum mechanics, electromagnetic radiation, and electron emission.
See Also
The photoelectric effect is the emission of free electrons from a material when it absorbs electromagnetic radiation, typically light.