Can you post some reference photos that show the effect you mean?MetinSeven wrote: ↑Wed Nov 04, 2020 3:28 pm I was thinking: how come in real life certain materials have a certain light, almost glowing SSS, as if the light is perfectly scattered inside the volume without the surface or volume significantly decreasing the light strength.
I have also considered you might mean fluorescence, but I'm not so sure. Fluorescence means that a material absorbs light of a certain wavelength and re-emits it on another wavelength. It is not really related to SSS, it's a different thing.
From wikipedia: https://en.wikipedia.org/wiki/Fluorescence
A good example are warning vests: they absorb invisible UV light and re-emit it at a visible wavelength, leading to the impression of being brighter than they should be when viewed under daylight.Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. The most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, while the emitted light is in the visible region, which gives the fluorescent substance a distinct color that can be seen only when exposed to UV light.