time constant
Noun
Meaning
(electronics) the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
An electron in an excited state may decay to a lower energy state which is not occupied, according to a particular time constant characterizing that transition.
By the relationship between parameter α and time constant above, a large α corresponds to a large and therefore a low corner frequency of the filter.
By the relationship between parameter α and time constant above, a small α corresponds to a small and therefore a high corner frequency of the filter.