Sitting on the barbershop, watching myself in the mirror which is parallel to another mirror (so that two mirrors are parallel to each other), I was seeing an infinite number of photocopies. After a moment, I guess that it's really not infinite, I can count the number of copies.
But we know from our elementary optics course, that the two parallel makes an infinite number of copies. This leads me to ask,
Why it is that parallel mirrors not make infinite images?
Here I think the finite speed of light would play a role, but I think not that significant. I don't if it's due to the fact if the mirror is not that enough parallel or they are not enough flat.