>>11437981I think for light to bounce indefinitely inside a box, there would need to be perfect 100% reflection mirrors and complete void inside the box, and I think we can't do that yet.
> would that mean that you could witness light coming through a box...Assuming there are only 2 opposed and perfectly aligned mirrors inside the box and there is a window in the middle of the box, and it's a complete void inside the box my guess would be that you couldn't see the light, because there would be no atoms inside for it to bounce of off.
Pic related, you only see the light beam because it's very powerful and it's bouncing on all the atoms present in the air.
