|
|
|
|
|
|
by its_so_on
5150 days ago
|
|
|
http://www.meritnation.com/discuss/question/32137 principle of reversibility of light: "The principle that if a beam of light is reflected back on itself, it will traverse the same path or paths as it did before reversal.
The principle of reversibility states that light will follow exactly the same path if its direction of travel is reversed." |
|
|