The Microsecond reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Microsecond

A microsecond is a millionth (10^-6) of a second. It is often used for measuring things like atomic and chemical reactions, which occur in normally imperceptible lengths of time.

See 1 E-6 s for comparisons.

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