/sci/ - Science & Math

Radiation ≠ light

https://en.wikipedia.org/wiki/Hawking_radiation

>>5832413

since when

>>5832413

Nigga you been smokin'?

>>5832391
How can you shit processed food when you eat the food?

pic related

BECAUSE ENTROPY NIGGA E=MC^2

i remember this being related to the casimir effect,
if one of the virtual particles fall into the black hole other one has to become real etc.
too freaky tho

>>5832473
no that's =, do you know what = means? Perhaps you're illiterate?

They give off a very weak hawking radiation, but that's not why some black holes are very bright objects.
Like from luminous black holes like quasars doesn't come from the black hole, but from the accretion disk. Mass accretion is more efficient at converting energy to light than nuclear fusion. The maximum luminosity you can achieve from an object of given size is the Eddington luminosity. Some black holes are insanely large which is why you get quasars shining as bright as galaxies for extended periods.

Light is not actually massless; it's just inconceivably small.

>>5832391
Things being pulled into a blackhole spin very quickly near the event horizon. Things spinning very quickly get very hot. Very hot things emit radiation. This is the light you see spewed out.

>>5832413
>Radiation ≠ light
It's not exclusively light. Radiation can be pretty much anything.

>>5832473
No.

>>5832479
Basically. The energy of the BH's gravitational field produces particle-antiparticle pairs near the event horizon (they are actually produced everywhere, but the horizon is where it's interesting), and when one of them escapes it carries off energy with it.

>>5832798
>Light is not actually massless; it's just inconceivably small.
It's theoretically zero according to all modern physics, and all experiments are in agreement (to an absurdly high degree of accuracy) with this.