Zeldovich amplification

Apr 23, 2026 - 19:22
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Zeldovich amplification

← Previous revision Revision as of 13:51, 23 April 2026
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[[File:Yakov Zeldovich, December 1980.jpg|thumb|Zeldovich in 1980]]
[[File:Yakov Zeldovich, December 1980.jpg|thumb|Zeldovich in 1980|180px]]
In [[physics]], the '''Zeldovich amplification''', '''Zeldovich effect''' or '''Zeldovich radiation''' is a [[physical phenomenon]] in which waves, such as [[Electromagnetic radiation|electromagnetic]], [[Acoustic wave|acoustic]], or [[gravitational wave]]s, are amplified rather than absorbed when they interact with a [[Rotation|rotating]], absorbing object. Predicted by Soviet physicist [[Yakov Zeldovich]] in 1971, the effect occurs when the rotation speed of the object exceeds the [[angular frequency]] of the incident wave. The effect is considered a classical analogue to black hole [[superradiance]] and is closely related to the [[Penrose process]]. While theoretically established for decades, the effect was first experimentally verified with acoustic waves in 2020. Although a viable experimental mechanism for electromagnetic waves was proposed that same year, experimental verification in the electromagnetic spectrum was not achieved until 2024.
In [[physics]], the '''Zeldovich amplification''', '''Zeldovich effect''' or '''Zeldovich radiation''' is a [[physical phenomenon]] in which waves, such as [[Electromagnetic radiation|electromagnetic]], [[Acoustic wave|acoustic]], or [[gravitational wave]]s, are amplified rather than absorbed when they interact with a [[Rotation|rotating]], absorbing object. Predicted by Soviet physicist [[Yakov Zeldovich]] in 1971, the effect occurs when the rotation speed of the object exceeds the [[angular frequency]] of the incident wave. The effect is considered a classical analogue to black hole [[superradiance]] and is closely related to the [[Penrose process]]. While theoretically established for decades, the effect was first experimentally verified with acoustic waves in 2020. Although a viable experimental mechanism for electromagnetic waves was proposed that same year, experimental verification in the electromagnetic spectrum was not achieved until 2024.


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