This document discusses several questions about black holes and their properties: 1) It explains that a black hole can have an electric charge because virtual particles inside the black hole, like photons, can temporarily travel faster than light and carry the charge, even if real particles can't escape. 2) It notes that string theory and loop quantum gravity avoid the singularity inside a black hole by imposing a minimum measurable size, resolving mathematical issues with general relativity at a point of infinite density. 3) When a black hole evaporates through Hawking radiation, it's unclear what would happen to any electric charge, as the final stages of evaporation are not fully understood. The black hole would likely explode outward once its mass can

1. in junior high school, so please explain it to me in a understandable way...how can a black hole have an electric charge? since the electromagnetic force messengers are photons, and even they can't escape from behind the horizon, than if there was an electron just outside the horizon, it woludn't be attracted to the black hole because its magnetic charge... and the other thing i can't get is: even if the black hole has a charge, than what happens to it once the black hole evaporates due to hawking's radiation??? it's whole electromagnetically charged interior would be emmited in form of non-charged photons...one more question about the black holes: when we analyze them from the point of view of the string theory (if i got the theory right...) than there is no singularity. if i remeber it right brian greene wrote in his book that there is a minimun size an object can have in the string theory. if there is a minimum size an object can have, then the black hole has no singularity, since there can't be any point of infAs to the second question (quoted above), that's really part of the beauty of the string theory approach (I think loop quantum gravity has the same limit, but I'm not sure): there is no singularity anymore. Part of the reason for string theory is to unify General Relativity and Quantum Mechanics, and doing this requires making General Relativity applicable at the smallest possible levels. However, when you get down to a singularity of infinite density, the mathematics of GR (general relativity) breaks down. So, if they (string theorists) can get rid of the singularity (by imposing a minimum size), then they can use GR at all possible levels of size.inite density... Originally posted by Ambitwistor If you want to adopt a particle description of the electromagnetic force, as being mediated by photons, then virtual photons can get out of a black hole because they can travel faster than light. However, we can't observe them, because they're virtual. Real photons, which we can observe, cannot escape.The thing to remember, FilipKunc, is that the virtual particles don't quot;
really existquot;
in the usual sense of the term. They are just an intermediate stage of a processhow can they travel faster than light...?i thought that's not possible. they are called virtual because we can't observe them, but they still have to obey special relativity, don't they<br />Virtual particles don't have to obey all of special relativity. In particular, they don't have to be quot;
on the mass shellquot;
(or quot;
on-shellquot;
), meaning they don't have to satisfy the relativistic relation,(mc^2)^2 = E^2 - (pc)^2Hawking radiation can emit particles other than photons, including charged particles. However, this is a still problem, because presumably by the time the hole evaporates, its mass is smaller than the mass of the smallest charged particle; there are no massless charged particles. Nobody understands the final stages of black hole evaporation. If a black hole evaporates, then presumably it will evaporate to the point where it's mass can no longer sustain the gravitational force necessary to remain a black hole, right? Shouldn't it explode outwards at that point?which is what constrains a massive particle to travel at less than c, a massless particle to travel exactly at c, etc.<br />the electromagnetic force messengers are photons<br />be more resistant and more resilient but explain does force has any particle charged + - <br />force is influence of the mass to change other mass in shape, velocity or direction ( so sun mass influence earth to revolute and rotate )<br />So world is made by misterious mistical metaphisical magical master by influencing the changes in mass from massless virtual particles created after disissipation of the black hole, world is in universe,<br />Mass makes force, force changes other mass.<br />So god can’t be force but might be mass. So god can’t change anything but can as a mass influence the changes in other masses.<br />God could produce force but it is not force it is in the force as a initial mass....????<br />A force has both magnitude and direction, making it a vector quantity ..mass influence change.....<br />What about charge at change<br />