[4.7.2] λc
NOTE: This term was added in RP-16-17 Addendum 1.
The wavelength at the weighted center of the spectrum of a monochromatic device under test (DUT); this is the weighted average of each wavelength and is defined by:
where λ is the wavelength and S(λ) is the spectral power distribution of the monochromatic DUT.
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