My question is: wouldn't it be a terrible idea to generate a black hole of any size in a particle accelerator?There might, however, be much smaller black holes which were formed by fluctuations in the early Universe. Any such black hole of mass less than 1015 g would have evaporated by now. Near the end of its life the rate of emission would be very high and about 1030 erg would be released in the last 0.1 s. This is a fairly small explosion by astronomical standards but it is equivalent to about 1 million 1 Mton hydrogen bombs.
That makes sense. I guess the key from the letter is "released in the last 0.1 s"; the generated black whole would evaporate in an exponentially shorter time than 0.1 s due its trivial mass. Thanks as always.Orodruin said:You seem to be missing out on the fact that you can never get a black hole evaporation more energetic than whatever you put in the beam.
Any black hole generated would evaporate extremely fast.
Yes it would, but a particle accelerator can't produce a black hole of any size.stoomart said:... wouldn't it be a terrible idea to generate a black hole of any size in a particle accelerator?
Right. It would evaporate within at most a few Planck times.stoomart said:That makes sense. I guess the key from the letter is "released in the last 0.1 s"; the generated black whole would evaporate in an exponentially shorter time than 0.1 s due its trivial mass. Thanks as always.
A "tiny one" is a size I think.rootone said:Yes it would, but a particle accelerator can't produce a black hole of any size.
Tiny ones that are short lived, well maybe.
If there is no new physics below the Planck scale. Extra dimensions or other additional things could make the Planck scale much lower, and allow black hole formation with a few TeV - in the range of the LHC.Chronos said:The energy necessary to produce a black hole of any size is huge. The smallest possible theoretical mass for a black hole is the Planck mass - 1018 GeV. That is far beyond the reach of any existing, or even imagined, collider.
Hawking's letter was significant because it proposed that black holes are not completely black, but instead emit a type of radiation now known as Hawking radiation. This challenged previous beliefs about black holes being completely devoid of any form of radiation.
Hawking radiation is caused by virtual particle pairs being created on the edge of a black hole's event horizon. One particle falls into the black hole while the other escapes, carrying away energy. As this process continues, the black hole loses mass and eventually can "evaporate" or explode.
Due to the immense distance and gravitational pull of black holes, it is currently not possible to directly observe a black hole explosion. However, scientists have observed the effects of Hawking radiation and studied its implications on black hole dynamics.
Hawking's theory of black hole explosions has fundamentally changed our understanding of these mysterious objects. It provided a way for black holes to lose mass and eventually "die", contrary to previous beliefs that they were eternal and unchanging. It also opened up new avenues for studying the relationship between gravity and quantum mechanics.
Scientists are continuing to study the implications of Hawking's theory and are also trying to find ways to observe and detect Hawking radiation from black holes. Additionally, there are ongoing efforts to better understand the nature of black holes and their role in the universe, including their potential connection to dark matter and the possibility of using them as a source of energy.