(July 7, 2019 at 4:01 pm)Rhondazvous Wrote: I’ve been laboring under the impression that photons are massless. But I’m now reading Einstein’s Universe by Nigel Calder in which he claims that Einstein said light is heavy
In some ways, it does seem that light must have mass. How could gravity bend light or trap light in a black hole if it had no mass? At the same time light doesn’t have the second property of matter. It doesn’t take up space. It wouldn’t be able to pass through solid objects such as glass, plastic. Or ice if it took up space. Only in intense concentration (laser) does light appear to take up space and move material objects out of its way.
So, are we making a difference between mass and matter? Between photons and light?
Leave it to a man to come up with a "double slit" experiment. I remember Vanessa Williams in the Penthouse spread back in the 1980s. There is no "quadruple ball" experiment . Never heard that showing up in Playgirl.
^^^^^^ Translation..... "Beer".... "Coconut rum"..... Too much time on my hands.
In all seriousness. It still freaks me out to think that it is both particle and wave. Neutrinos also freak me out thinking about how small they are.