From: Zardoz ®	04/11/2001 19:36:08
Subject: re: COSMOLOGY FAQ	post id: 484069
What is your view on the miniature black holes then, are you of the camp that says they don't and will not exist, do you prefer hard vacuums or new matter etc. From: Chris (Avatar) The theory is sound - they're possible. As yet no evidence has been found to support their actual existence. I'll wait to see whether they're discovered or disproven. What are the energies needed to make one? From: Chris (Avatar) Depends on the size. From the schwartzschild solution, the mass required for a black hole of radius r is: M = rc2/2G So the energy required would be E = rc4/2G How do you explain their event horizons and their dissipation? From: Chris (Avatar) The event horizon forms naturally when enough mass is in a small enough volume. The dissipation is due to Hawking radiation. The rate of radiation via the Hawking mechanism is inversely proportional to the circumference of the hole - the smaller the hole the faster it radiates away.