| lightResponsivitySpectra {colorSpec} | R Documentation |
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 |
Details
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.
Value
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.
Source
https://en.wikipedia.org/wiki/Ultraviolet_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