Hawking radiation

A clip from a BBC documentary explaining Hawking radiation around black holes.

Category:

Science & Technology

Tags:

• stephen
• hawking
• black
• holes
• radiation
• gravity
• virtual
• particles
• vacuum

[CACBCCCU]

Why it's the negative mass that falls into the black hole and not the positive mass, they do not explain here. Just the fact that one of the pair survives is supposed to be the surprising part, and then one sees it's the one that maybe one would least expect, and it seems treated like it's not really very worthy of note. I suppose the induced pair always has the negative mass particle on the side near the BH, but that seemingly would just increase the repulsion, so to me it's still confusing.

[stevebd1]

@CACBCCCU Either the virtual positron or electron can fall into the BH. Due to the 1st law of thermodynamics (energy cannot be created or destroyed), if one of the particle escapes, then the one that falls into the BH has to have negative mass. If the positron escapes, it will almost immediately annihilate with an electron producing high energy photons.

[789123Y]

@Trollz0Be0Trollin Learn to read and spell before calling someone names, it will improve your life.

[789123Y]

I'm not a physicist but i thought antimatter is an opposite to normal particles in the sense that they have an opposite electric charge, not the opposite mass? Wikipedia says :

"Corresponding to most kinds of particles, there is an associated antiparticle with the same mass and opposite electric charge."

[Narftaxaku200]

@Capeau then check on scholarpedia

[Capeau]

@789123Y

I cant help you with the answer but i wouldnt trust wikipedia with such specialised things

[MrHazZona]

@789123Y From what I understand, mass is equivalent to energy according to Einstein's famous E = mc^2, so a negative mass, multiplied by a positive number (c^2) will give you a negative amount of energy. Hope that clears things up.

[GShock112]

It would sound like the BH only eats antimatter... thus eventually self annhilating itself.

We're safe then, right? Earth is positive matter?

I'd say this subject shouldn't be dealt so inconsistently and simplicistically as in this documentary... but then... I wouldn't understand a damn! :-)

[chenalos]

I was thinking wait a minute. Doesn't the pair production violate the law of conservation of mass/energy?  Then I realized that because negative mass enters into the black hole, while positive mass escapes from the black hole the amount of mass lost under the event horizon would be equal to the amount of mass which escapes above the event horizon, thus mass and energy are conserved.

[BulgarianBombShelter]

btw Quantum Electrodynamics was the first art to join Relativity and Quantum theory. so poned,

[BulgarianBombShelter]

@789123Y lolol tru tru bro

[Metticus]

somehow the postive matter escapes the pull of gravity

[Trollz0Be0Trollin]

@789123Y Lets not go into learning, idiot. Firstly, this is the internet, and if you give a shit about spelling then you should go back to actual life. Second, there's no such thing as opposite charge. Charge is deteremined by an incredibly rare and heavy particle called the magnetic monopole. Magnetic monopoles cannot have an antiparticle because they interact directly with te higgsfield. Instead where the magnetic monopole would be found on ordinary matter... fuck this i dont have enough word