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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TT
Waves

Period

Time for one complete cycle of an oscillation or wave.

SI unit

second (s)

Dimension: [ T ][\,T\,]

Other units

  • second (s)
  • millisecond (ms)×1.00e-3

Order of magnitude

How values of period span the physical world (in s, log scale).

Visible light wave
2.00 × 10-15 s
Pendulum (1 m)
2.00 × 100 s
Earth year
3.15 × 107 s
Lower limit10-15 sUpper limit1017 s

Appears in 1 equation

Period and Angular Frequency
T=2πωT = \dfrac{2\pi}{\omega}