Beta (velocity)

β in special relativity is the velocity, v, of an object relative to the speed of light c:^[1] $\beta =\frac{v}{c}$

It is less commonly referred to as the Jackson Number.^{[citation needed]}

β is dimensionless and equal to the velocity in natural units. Any expression which involves v, like the Lorentz factor, can be rewritten using β instead. See the Lorentz transformation.

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