English Explanatory Dictionary

time constant

English dictionary entry

Meanings

noun
  1. A characteristic of an exponential function, represented by τ in the function
  2. The time in which a physical system's response to a step-wise change in an external variable reaches approximately 63% of its final (asymptotic) value.
  3. For radioactivity: the decay constant.

Word forms

time constant time constants time-constant
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