Time scale

From Wikipedia, the free encyclopedia

A time scale specifies divisions (scale) of time.

• A time standard is a specification of either the rate at which time passes, or points in time, or both.
• A duration is a quantity of time.

• The geological time scale divides up the history of Earth into scientifically meaningful periods.

• In astrophysics:
  • The dynamical time scale measures the length of time over which changes in one part of a body can be communicated to the rest of that body.
  • The nuclear time scale estimates the lifetime of a star based solely on its rate of fuel consumption.
  • The thermal time scale estimates the lifetime of a star once its fuel reserves at its center are used up or if they were to disappear.

• In music:
  • A rhythm is a temporal pattern of events.
  • Time scale (music), divides up music into sections based on the scope.

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