Wikipedia:Reference desk/Science: Difference between revisions
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:Note that micro black holes [[Hawking radiation|evaporate within a tiny fraction of a second]] -- and also note that, even for a [[Planck-mass]] black hole (10 [[microgram]]s), such near-instantaneous evaporation would release an energy of about 900 [[gigajoules]] (which, for comparison, is about the explosive power of a [[Mk 82|500-lb high-explosive bomb]] like the ones we drop on Isis and other terrorist groups). So no, such a black hole still can't pass right through you for 2 different reasons -- (1) it will evaporate first, and (2) in doing so it would blow you to bits if it happened to be close enough! [[Special:Contributions/2601:646:8082:BA0:BDCC:8484:2734:F138|2601:646:8082:BA0:BDCC:8484:2734:F138]] ([[User talk:2601:646:8082:BA0:BDCC:8484:2734:F138|talk]]) 13:21, 22 June 2025 (UTC)
::However, if such a hole were travelling close to the speed of light, relativistic time dilation would prolong its lifetime. See also [[Micro black hole#Expected observable effects|Micro black hole#Expected observable effects]]. {The poster formerly known as 87.81.230.195} [[Special:Contributions/94.6.41.216|94.6.41.216]] ([[User talk:94.6.41.216|talk]]) 15:27, 22 June 2025 (UTC)
:::Still, assuming a casualty radius of 11 meters for the explosion caused by the evaporation of the black hole (implying blast effects only, '''no''' flying debris), the time dilation would have to be '''at least''' by a factor of '''thirty-six''' [[orders of magnitude]] to allow said black hole to pass through you and explode a safe distance away! (And if the explosion would create a significant amount of flying [[Fragmentation (weaponry)|shrapnel]], e.g. if it demolishes a parked car nearby, then that would add an extra order of magnitude for the time dilation required!) [[Special:Contributions/2601:646:8082:BA0:F577:E853:35B:8DD9|2601:646:8082:BA0:F577:E853:35B:8DD9]] ([[User talk:2601:646:8082:BA0:F577:E853:35B:8DD9|talk]]) 11:52, 23 June 2025 (UTC)
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