[4.7.2] lambda _{c}
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:
lambda_{c}= left [int_{lambda_1}^{lambda_2}lambda cdot S(lambda) dlambdaright ]/left [int_{lambda_1}^{lambda_2}S(lambda) dlambdaright ] ,
where λ is the wavelength and P(λ) is the spectral power distribution of the monochromatic DUT.
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