: Does light have mass??? Of corse not? However I was thinking about the hizen-burg (I'm not a good speller) : wave-particle relation. : For example an apple has mass and wave properties. We see the particle side more than the wave side but it is there. An electron has mass and paritle nature. We see mostly the wave side. : My point is that a photon behaves like a particle and a wave. Maybe a photon has mass but so little we can't detect it.....Maybe not. : Does any one know of the sure test that proved without a shadow of a dought that a photon has no mass. : Or does it relate to the zero rest mass and apparnt : mass with its velocity....

good theory love it no never heard of test for that but maybe find out in quantum physics. I bet you a apple that it does and we just can't measure it. think about it if light does have mass what do you think would happen to all those number theorys we see 10-15 % of the visible universe so that's where all that matter is...