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Lorentz factor

The Lorentz factor γ is the factor by which time, length, and mass change for an object that is moving.

 


Explanation

The dimensionless Lorentz factor is defined as

where

    v Relative velocity between inertial reference frames
    c Speed of light

 


Alternative 1

The formula was originally described as

where

    v Speed
    c Speed of light

 


Alternative 2

The formula can also be written as

where

    β Reduced speed

 


Alternative 3

The formula can also be written as

where

    α Contraction factor, which is the inverse of γ

 


Alternative 4

The formula can also be written as

where

    t Time
    τ Proper time

 


Additional information

The Dutch physicist Hendrik Lorentz (1853 - 1928) is known for the Lorentz transformations.

 


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