International Electrotechnical Commission
Glossary

EN full width half maximum
FWHM  
the range of a variable over which a given characteristic is greater than 50% of its maximum value

Note1 to entry: FWHM may be applied to characteristics such as radiation patterns, spectral linewidths, etc. and the variable may be wavelength, spatial or angular properties, etc., as appropriate.

[SOURCE: IEC60050-731:1991, 731-01-57]


TC/SC:82Terms     Info     Publications
Published in:IEC 62257-9-5, ed. 2.0 (2013-04) Terms     Info
Reference number:3.9

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