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| | | #REDIRECT [[Time constant]] |
| #REDIRECT [[time constant]] | |
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| <div class="termentry">
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| == time constant ==
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| <div class="definition"><div class="short_definition">(''Also called'' lag coefficient.) Generally, the time required for an instrument to indicate a given percentage of the final reading resulting from an [[input]] signal; the [[relaxation time]] of an instrument.</div><br/> <div class="paragraph">In the general case for instruments such as [[thermometers]], with responses exponential in character to step changes in an applied [[signal]], the time constant is equal to the time required for the instrument to indicate 63.2% of the total change, that is, the time to respond to all but 1/''e'' of the original signal change.</div><br/> </div>
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| {{TermIndex}}
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| [[Category:Terms_T]]
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