Physics Ontology

One map of physics, three ways in. Drill down on any quantity to see its units, the equations it lives in, and how its values span the universe.

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γ\gamma
Relativity

Lorentz Factor

Time-dilation / length-contraction factor at speed v.

SI unit

dimensionless (—)

Dimension: [ 1 ][\,1\,]

Other units

  • dimensionless (—)

Order of magnitude

How values of lorentz factor span the physical world (in —, log scale).

Everyday speeds
100 —
Cosmic-ray proton
1011 —
Lower limit100 —Upper limit105 —

Appears in 1 equation

Lorentz Factor
γ=11−v2/c2\gamma = \dfrac{1}{\sqrt{1 - v^2/c^2}}

Associated scientists