What is momentum?

>What is e=mc^2?
>What is a photon?

Thats not the full equation retard

What do you mean it's not the full equation? Do you want me to break out the equation for relativistic mass to some how make it more full?

God dammit. Have you spent 10 minutes in any college level physics classroom? They explain all of this.

Do they? Why would you talk about the relativistic mass of a photon. What good does that do anyone? I'm not being an asshole, I'm actually asking. I've never seen anyone talk about that. I've always seen the planck relation used for momentum and energy, but never for relativistic mass

[math]E^2=m0^2c^4+p^2c^2[/math]

There's probably a formulation where this is true. But if there is, then it's stupid and useless.

That's a different formula for energy and it's relationship to momentum, so I don't know what your point is.

m = E/c^2

E and c are both nonzero, so photons have a relativistic mass

give this guy the dunning-kruger prize

I really hate the concept of relativistic mass. You can leave it out of your models and everything still works great and you don't have to think about things like whether or not photons have relativistic mass. Because really, who cares? The only way to derive the relativistic mass of a photon is the way you just did it. Relativistic mass is only good for keeping Newton's second law intact and Newton's second law doesn't apply to photons, so who the fuck cares?

It's not even some crazy thing, it's simple algebra

[math]E = mc^2[/math]
[math]E = pc[/math]
[math]pc = mc^2[/math]
[math]p = mc[/math]