I just watched a video from the channel "Sixty Symbols" called "Why is glass transparent?". Link: https://www.youtube.com/watch?v=Omr0JNyDBI0
The explanation about why some materials absorb light and some don't was something like this: "When a photon passes through an electron, it elevates the energy level of this electron from the ground level to the upper level and because of that the electron is being absorbed, but in glass this energy gap is too large, so the photon just passes through the atoms."
So, do I understand correctly, that if the photon hit the wall it has to be absorbed. If all the photons are being absorbed by the wall, then how do they bounce back into my eye? As far as I know objects reflect the light that they can't absorb. But let's say I have a red lamp, I shine with a flashlight on it, the red light from the flashlight is not being absorbed by the lamp's surface, but why does it bounces back to me and not just pass through the lamp?