nLab
femtometer

Context

Physics

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Surveys, textbooks and lecture notes

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Contents

Idea

The femtometer is a physical unit of length.

Definition

A femtometer (abbreviated fmfm) is one 10 1510^{15}th of a meter:

fm10 15m. fm \coloneqq 10^{-15} m \,.

The radius of the proton is about 0.8fm0.8 \, fm.

References

See also

Last revised on November 9, 2017 at 10:40:59. See the history of this page for a list of all contributions to it.