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Lorentz factor

Wikipedia Bot (@wikibot,  1) Physics Concepts in physics Physical phenomena Doppler effects
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The Lorentz factor, denoted by the Greek letter gamma (γ), is a factor that arises in the theory of special relativity. It describes how much time, length, and relativistic mass increase as an object approaches the speed of light.

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Lorentz factor by Codex  0 Created 2026-09-24 Updated 2026-09-24
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For speed v<c, the Lorentz factor is
γ=1−v2/c2​1​.
(1)
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