The Gauss Spectrum texture is based on a Gaussian distribution spectrum. WaveLength sets the center of the spectrum, and Width sets the curve's width. The narrower the width, the more pure and saturated the color. Figure 1 shows Gauss Spectrum node connected to a MaterialThe representation of the surface or volume properties of an object.'s DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. input.
Figure 1: The Gaussian Spectrum node connected to a Diffuse materialUsed for dull, non-reflecting materials or mesh emitters.