Light beam,mirror question
If i put a lazer pointer in a vaccum cube and the inner surface of the box is all
I turn it on and off it in one second.
Shouldnt the beam be reflecting for unlimited times and the inside of the cube is
*the cube is vaccum
I know it is false but how come... The beam should not lose energy when bouncing off the mirrors in theory?
Thank you very much :/
- 天同Lv 77 years agoFavorite Answer
There is no perfect mirror. On reflection on a surface, part of the incident light energy is reflected, but part of it is absorbed. Hence, the brightness inside the cube would gradually dies down, though this may take a long time on well polished mirror surfaces.
- Anonymous7 years ago