What effect has the mass of the sun on the photon's it produces?

Been wondering about this for a whole minute:

>at some point, the mass of a star becomes greater than the escape velocity of the photon's it produces.

Is this a black hole than?

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en.wikipedia.org/wiki/Energy–momentum_relation
twitter.com/AnonBabble

What even is a photon? It's matterless energy? How's that work?

Photons
Have fucking mass
Fucking moron

A black hole is black because light can't escape.

Keep in mind that something has to be really fucking heavy and dense to stop light, since light generally moves pretty fucking fast.

speed of light in a vacuum:
299,792,458 m / s
escape velocity of the Sun (for reference)
618,000 m/sec

So yeah, most stars aren't even close. Even a white dwarf star like Sirius B has an esape velocity around 5million m/sec

A black hole has an escape velocity of the speed of light , at the event horizon

Photons are energy
Energy has mass
Photons have mass

What's that mass composed of?

energy

energy and mass are the same thing. You seem to have this notion in your head that they're different things but they're not. It's like turning a reversible coat inside out. Maybe it looks different and functions differently but both "coats" are the same thing

you ever hear of "e=mc^2"? It's not just a meme to put on science poster backgrounds next to images of Einstein and motivational phrases (although that's it's main use)

No, the mass of a star doesn't change, that's not how a black hole works.

When the star burn up all of its fuel, the radiation/gravity balance is broken ( no more radiation ) and the star collapse on itself, when it reduce to the size of its Schwarzchild radius, that's when it becomes a black hole

Then where does helium go, when it leaves the atmosphere?

The firmament, where the heavenly host and our Lord God reside.

>Lord is what (((they))) put in the bible to make you believe that God is the ruler of mankind.

>God is the voice you hear when you think.

Did the helium manifest itself in your brian, user?

>no more radiation

But before it collapses, a supernova (radiation burst) occurs right? Does that not mean that gravity runs out (instead of radiation)? And to compensate for the surplus of radiation (entropy), an equal amount of mass is formed.

Exces mass pulls back radiation, until balance between radiaton/gravity is restored. Then the black hole evaporates

most of it gets blasted into space during the supernova and becomes part of the resulting nebula

>Photons have mass
nope, it's on the wiki page ffs
lazy ass brainlet

>But before it collapses, a supernova (radiation burst) occurs right? Does that not mean that gravity runs out (instead of radiation)?
Do you mean radiation "wins out" against the force of gravity, in the "race" to create a black hole? Because gravity doesn't ever "run out". It doesn't work like that.

The supernova is the final, energetic explosion caused by the repulsion of elements in the core as they rapidly fuse and nuclear-explode outwards due to the core collapse. Most of the time this explosion is enough to stop the collapse at the cost of shedding most of the star's material (every layer but the core) and leaving it a dwarf or neutron star. This material has to be ejected in order to stop the collapse because otherwise the star's overall mass is too great, making the pressure of gravity on the core too much.

>And to compensate for the surplus of radiation (entropy), an equal amount of mass is formed
No. Mass cannot simply be "formed". Read the law of conservation of mass. A black hole gets its mass from its original star and from all the material it pulls in from its environment over its lifetime

Photons don't have mass, but they do have energy and they also have momentum. Their energy comes from their wave frequency (E=hf), which is why light waves are more energetic than radio waves for example.

so if energy = mass like said, how do photons have energy but no mass?

>Do you mean radiation "wins out" against the force of gravity, in the "race" to create a black hole? Because gravity doesn't ever "run out". It doesn't work like that.

Did not mean that it litteraly 'runs out'. But more like gravity is a product of the star producing more radiation(during the supernova/explosion) than it has mass and gravity.

>so if energy = mass like # said, how do photons have energy but no mass?
They used E=mc^2 as the meme to demonstrate energy as mass (this is a fallacy that isn't new to /sci); this is only true for stationary objects (which doesn't apply to particles that always travel at a fixed velocity, funnily enough).
The full equation is E=mc^2+pc. p is momentum, which has an extended form under relativity. In a photon, mass is zero, but momentum is non-zero, and is found empirically to be equal to E/c, which conforms with the equation perfectly.

I think your understanding of stars is flawed. Stars will actually have less and less gravity as it emits radiation, since it is losing energy (and mass) when this occurs. Stars do not collapse because of the pressure created by their radiation (similar to how a solar sail run off of solar wind). When the star stops producing radiation, the equilibrium is reached at a smaller radius, where more pressure is built up again. Supernova are just a incredibly fast release of energy, not a production.
Over time, a star runs out of 'fuel', and so the pressure keeping it from collapsing reduces. Eventually, some stars reach the point where the repulsion between electrons in the atoms is the main pressure keeping the star from collapsing further; these are white dwarves.
Some heavier stars have gravity strong enough to overcome this, and compress the particles so much that the entire star' protons and electrons fuse into neutrons; this is a neutron star (the repulsive force is called neutron degeneracy pressure; I don't know much about this, so I won't try to pretend that I know what causes it).
When the pressure between neutrons is still too weak in massive stars, then nothing can support the star from collapsing further, until a black hole is formed.

Ok, tnx a lot for taking the time to explain this!

>The full equation is E=mc^2+pc
nope
en.wikipedia.org/wiki/Energy–momentum_relation

>E=mc^2 only true for stationary objects

Wew lad. The faster you move, the heavier you get. The energy of motion turns into your mass. So, no, it doesn't work only for stationary objects.

retard

Wow nice one :^]

The simplified form of the equation has no input for velocity, so user is correct, the simple form only describes the object's rest energy.