Gaussian Spectrum
The Gaussian Spectrum texture is based on a Gaussian distribution spectrum. Wavelength sets the spectrum's center, and Width sets the curve's width. Narrower widths create purer and more saturated colors.
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Gaussian spectrum
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Figure 1: The Gaussian Spectrum texture used to adjust the diffuse color of a material
Gaussian Spectrum Parameters
Wavelength - This represents the mean wavelength approximation between 380nm - 720nm. Lower wavelength values appear bluish, while higher wavelengths (around 700nm) appear reddish.
Width - Almost no color is visible when using a width of 0.000. On the other hand, a width of 1.000 means the color is spread thin over a large space, and the texture appears faint.
Power - The texture's brightness.