Time scale

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Time scale may refer to:

In astronomy and physics:

  • Dynamical time scale, in stellar physics, the time in which changes in one part of a body can be communicated to the rest of that body, or in celestial mechanics, a realization of a time-like argument based on a dynamical theory
  • Nuclear timescale, an estimate of the lifetime of a star based solely on its rate of fuel consumption
  • Thermal time scale, an estimate of the lifetime of a star once the fuel reserves at its center are used up

In cosmology and particle physics:

  • Planck time, the time scale beneath which quantum effects are comparable in significance to gravitational effects

In mathematics:

  • Time-scale calculus, the unification of the theory of difference equations with differential equations

In music:

In project management:

  • Man-hour, the time scale used in project management to account for human labor planned or utilized