The weirdest hang-up I've ever seen people get on is light being affected by gravity.
Like, they're really sure of the idea that only things with mass are effected by gravity, which is wrong, but then they say that Einstein must have been wrong because it disagrees with something that is known to be wrong
i don't get it
Maybe because they learned the gravitational force equation
Obviously that's an obsolete model, since it doesn't explain gravitational lensing. It's the one that pretty much works except for astrophysics though. I certainly don't know how to calculate the gravitational pull of a massless thing, and the very concept is annoyingly contrary to what I understand "mass" to even be.
I mean, now I'm reading about solar sails and realizing that photons have significant momentum. But no mass. What the
fuck?
I'm not saying they have mass, because I know that an object with any mass moving at c would theoretically have infinite relativistic mass (and would take infinite energy to accelerate to that point). But the normal conclusion from that is "So obviously they don't have any mass at all" not "They technically have no mass, but they behave like light (unheavy lol) particles despite moving at c. Pulled around by gravity, and transferring momentum on collisions".
Relativity is WEIRD. Here's something I found which seems like an explanation, of sorts... "Photons of light are not technically affected by large gravitational fields; instead space and time become distorted around incredibly massive objects and the light simply follows this distorted curvature of space." Dunno if that's true, but sounds good.