I have noticed in the past that light travels through water relatively undisturbed (I have noticed that there seems to be some small amount of light reflected, but most seems to pass directly through). How does this happen, in terms of photons encountering particles? I once thought that the correct explanation might be that the photons simply do not interact with the particles of the water. But I think that this must be wrong, because the light changes it's speed/direction upon entering the water, suggesting that some interaction takes place. I now imagine a photon entering the water, striking an electron and being absorbed, then being re-emitted by the same electron only to be absorbed by another electron in perhaps the next adjacent atom/molecule. I imagine the process repeating itself from molecule to molecule until the light reaches the other side of the column of water. Is my mental model of the process anywhere close to being realistic? If not, is there a better way to imagine it.