I was wondering if it's possible to make a phosphorescent material that stores the light-energy. I don't mean like fluorescent just by putting a emmision shader.
I mean if light shines on it and then you mute the light, the material stores the light for a period of time until it fades out into darkness. You get this material sometimes on the pointer of analog wristwatches or like on fluorescent jackets.
Hope my explanation is clear