colorSpec (version 0.5-2)

lightResponsivitySpectra: compute standard light responsivity spectra

Description

Some action spectra standards are defined by simple equations; the erythemal spectrum for human sunburn is one of them.

Usage

erythemalSpectrum( wavelength=250:400 )

Arguments

wavelength

a vector of wavelengths, in nm

Value

• For erythemalSpectrum() A colorSpec object with quantity equal to 'power->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.

source

http://en.wikipedia.org/wiki/Ultraviolet_index

Details

This erythemal spectrum is defined in 4 pieces: $\lambda<=298$, $298<="\lambda<=328$," $328<="\lambda<=400$," and="" $400<\lambda$.="" all="" the="" units="" are="" nm.="" spectrum="" is="" used="" in="" definition="" of="" international="" standard="" UV Index.

References

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)

See Also

daylight, quantity, materialSpectra, lightSpectra