Nektonic
Veteran
Micro Black Holes [Wikipedia]
Creation of micro black holes
Under standard theories, such an energy to produce a micro black hole is orders of magnitude greater than that which can be produced on Earth in particle accelerators such as the LHC (maximum about 1.15 × 106 GeV), or detected in cosmic ray collisions in our atmosphere. It is estimated[citation needed] that to collide two aggregates of fermions to within a distance of a Planck length with the currently achievable magnetic field strength would require a ring accelerator about 1000 light years in diameter to keep the aggregates on track. Even if it were possible, any collision product would be immensely unstable, and almost immediately disintegrate.[citation needed]
Some string theorists have suggested that the multiple dimensions postulated by string theory might make the effective strength of gravity many orders of magnitude stronger at small distances (very high energies). This might effectively lower the Planck energy, and perhaps make black-hole-like descriptions valuable at even lower masses such as those which are reachable at the LHC.[7][8][9] This higher-dimensional component to gravity is, however, purely theoretical as of 2008.
Stephen Hawking also said in chapter 6 of his Brief History of Time that physicist John Wheeler once calculated that a very powerful hydrogen bomb using all the deuterium in all the water on Earth could also generate such a black hole, but Hawking does not provide this calculation or any reference to it to support this assertion.
Personally, I'm more fearful of a large asteroid or comet hitting the Earth than the LHC creating a black hole.
I have to admit though, the man-made black hole concept would make for a pretty cool disaster film or novel if handled gracefully.
Creation of micro black holes
Under standard theories, such an energy to produce a micro black hole is orders of magnitude greater than that which can be produced on Earth in particle accelerators such as the LHC (maximum about 1.15 × 106 GeV), or detected in cosmic ray collisions in our atmosphere. It is estimated[citation needed] that to collide two aggregates of fermions to within a distance of a Planck length with the currently achievable magnetic field strength would require a ring accelerator about 1000 light years in diameter to keep the aggregates on track. Even if it were possible, any collision product would be immensely unstable, and almost immediately disintegrate.[citation needed]
Some string theorists have suggested that the multiple dimensions postulated by string theory might make the effective strength of gravity many orders of magnitude stronger at small distances (very high energies). This might effectively lower the Planck energy, and perhaps make black-hole-like descriptions valuable at even lower masses such as those which are reachable at the LHC.[7][8][9] This higher-dimensional component to gravity is, however, purely theoretical as of 2008.
Stephen Hawking also said in chapter 6 of his Brief History of Time that physicist John Wheeler once calculated that a very powerful hydrogen bomb using all the deuterium in all the water on Earth could also generate such a black hole, but Hawking does not provide this calculation or any reference to it to support this assertion.
Personally, I'm more fearful of a large asteroid or comet hitting the Earth than the LHC creating a black hole.
I have to admit though, the man-made black hole concept would make for a pretty cool disaster film or novel if handled gracefully.
