Looks like it's due to triboelectric-related effects https://en.wikipedia.org/wiki/Triboelectric_effect https://en.wikipedia.org/wiki/Triboelectric_effect so w

Looks like it's due to triboelectric-related effects https://en.wikipedia.org/wiki/Triboelectric_effect https://en.wikipedia.org/wiki/Triboelectric_effect so with the tape I'd assume it's due to the friction from unraveling the sticky side from the non-sticky side also related to https://en.wikipedia.org/wiki/Triboluminescence https://en.wikipedia.org/wiki/Triboluminescence which the scotch tape demonstrates as well