sheepwshotguns Says:

Apr 5, 2008 - could i get the name of this documentary?

stevebd1 Says:

Apr 7, 2008 - 'Stephen Hawking- Master of the Universe Part 1'

0zyzzyz0 Says:

Apr 12, 2008 - Thanks again for sharing.

INDIANdragonn Says:

May 28, 2008 - VERY INTERESTING VIDEO BUT: various questions arise. 1.WhAT actually are these two 'masses'? 2.Now how does the +ve mass escape the pull of a black hole(what gives it the force or energy to escape?) 3.We know that a mass is always pulled into a black hole . and so logically , the -ve mass should be repelled off .

ThiaryBand Says:

Jun 1, 2008 - These two masses could be for example an electron and a positron, or for example a neutrino and an antineutrino. Look them up on Wikipedia. also look up about Beta and negative Beta radioaktiv radiation. It's because the one escaping, is the exact oppoisite of the one falling into the black hole. The energy that the one falling in, gets to fall "in", that is the same energy that the one escaping uses to get "out", only pointing in the other direction. The two masses are EXACT opposites of eachot

ThiaryBand Says:

Jun 1, 2008 - -eachother. That is why the kill eachother when they meet, they become 0.

INDIANdragonn Says:

Jun 2, 2008 - Ok , Now what is the probability to be an electron-positron OR nuetrino-antinuetrino pair. AND i ve learnt that the AntiParticles have opp. charges only. But then they both have mass so they shud both be pulled in . i mean the pulling of one can not cause they jumping of the other out. And no matter how much energy the particle has got, it should be pulled in Bcoz even light with so much velocity can't escape. Thanks.

muebermuth Says:

Jul 27, 2008 - fine so if LHC in Cern creates a black hole we can be shure that something new will be coming out of it, ok we are all gone but something new. that is fine. ;-)

ActiveStorage Says:

Jul 29, 2008 - good point i dont get it either still waiting for the explanation from other people

supersandor Says:

Aug 3, 2008 - Boy did they ever get their facts wrong in this video! I hardly know where to begin! Virtual particles aren't such that one has positive mass and the other has negative for one thing. And "the positive one would have just enough energy to escape". That's wrong on so many levels.

freethinker77 Says:

Aug 17, 2008 - Why does the black hole suck in the anti-particle and not the particle? Why is not not capable of sucking in both particles, in which case it's mass would remain the same?

stevebd1 Says:

Aug 19, 2008 - The photon sphere around a black hole (1.5 times the event horizon radius) is a very unstable orbit. This is the point where photons are captured or escape the black holes, it's a very fine margin and the same applies to virtual particles as they pop in and out of existance. One will pop on the inside of this radius and the other on the outside, hence one spirals into the black hole while the other escapes.

stevebd1 Says:

Aug 19, 2008 - Both particles are virtual so regardless of which one escapes, it will take energy from the black hole.

freethinker77 Says:

Aug 19, 2008 - I see , thanks for the explanation

astafford3142 Says:

Sep 2, 2008 - The message here is very garbled. I don't think antiparticles have negative mass, since anti-gravity does not exist. Cosmic black holes have accretion disks that radiate but this is not due to Hawking radiation.

PhantomKode Says:

Sep 8, 2008 - why can't he talk?

Wh47n0w1517 Says:

Sep 30, 2008 - And now youre going to run along, on your merry way, and believe in fairies just because someone said they exist. It has never been proven, as of yet that is, if Hawking radiation exist.

ItachiFire499 Says:

Oct 2, 2008 - I want one of those electric balls T.T

rduga007 Says:

Oct 9, 2008 - I don't understand how both particles being virtual inevitably results in mass being lost. I thought that one is essentially -1 and one is essentially +1; maintaining the conservation of mass and energy. So if the -1 is sucked in the black hole losses mass, but if the +1 is sucked in the black hole gains mass. What causes the -1 to be sucked in instead of +1? They can't both be -1; because -1+-1 = -2, effectively turning nothing into less than nothing, reducing the energy of the cosmos.

Hanini87 Says:

Oct 25, 2008 - I think there is a major error - Both have mass one but opposite charge. Isn't the definition of an antiparticle - identical to it's opposite particle in exactly but with opposite charge.

goldensleeves Says:

Nov 1, 2008 - What exactly "gives" a particle "charge"?? I mean, I know many things about how certain charged particles behave as a result of their charge... but what exactly is a "charge" and why do certain particles have it? Can anyone get me started on the right direction? Thanks in advance.

stevebd1 Says:

Nov 15, 2008 - It doesn't matter which one gets sucked in or escapes. If the positron escapes, it would almost immediately react with an electron, producing 2 photons, if the electron escapes, it will simply travel across space until captured by a larger mass..

stevebd1 Says:

Nov 15, 2008 - ..Because of the 1st law of thermodynamics (energy cannot be created or destroyed), Hawking radiation implies that there is a mechanism in place that ensures that if one of the two virtual particles escapes the black hole, the one that falls into the bh will attain negative energy, regardless of whether it is matter or anti-matter particle.

elchasai Says:

Nov 21, 2008 - no your right it is as yet an unproven hypothesis, and some may smirk at the fuzzy sensibilities of string theorists who get all giddy about it...but unlike fuzzballs there are alot of concrete experiments happening with the auger cosmic ray observations, the launch of GLAST satellite and the hadron collider i'm quite enthusiastic that at least MBH evaporation will be proven. im really currently interested in exotic stars and theoretical subatomics like preons heard of RX J1856.5-374 or 3C58?

omnipotentfish Says:

Nov 30, 2008 - i don't know much about it myself but i think it's due to their spin. if you want a more satisfying answer i suggest you try wikipedia