- Bilal Saad
United Nation member
"Light on Light" is that true or "Light in Light" is that true?
my issue here is about light by physical photons, what I mean is can light interfere with another light or they are keep separated with out interfere. but our eyes can't distinguish it. what i ask the photons have wight? if it has wight so that means they are can Collision, i need someone explain that.