Some action spectra standards are defined by simple equations; the erythemal spectrum for human sunburn is one of them.
erythemalSpectrum( wavelength=250:400 )For erythemalSpectrum()
A colorSpec object with quantity equal to 'energy->action'.
The responsivity is 0 for \(\lambda\) > 400 nm, so this putting this spectrum in the category
of human vision is a bit of a stretch.
a vector of wavelengths, in nm
This erythemal spectrum is defined in 4 pieces: \(\lambda \le 298\), \( 298 \le \lambda \le 328\), \( 328 \le \lambda \le 400\), and \( 400 < \lambda\). The unit is nm. The spectrum is used in the definition of the international standard UV Index.
McKinlay, A.F., and B.L. Diffey. A reference action spectrum for ultraviolet induced erythema in human skin. CIE Res. Note, 6(1), 17-22. (1987)
daylight,
quantity,
materialSpectra,
lightSpectra