Re: Blackhole Engines, again.
- From: Erik Max Francis <max@xxxxxxxxxxx>
- Date: Mon, 10 Apr 2006 16:59:21 -0700
Wayne Throop wrote:
It does? What happens "just before it evaporates" is that its
power output increases, and it blows through it's last many-many-many
tons of mass in a microsecond. So, basically, it's not the only thing
that's going to be "evaporating" in them there parts.
My "just before it evaporates," I didn't mean you let it evaporate in your engine/drive/whatever, you get rid of it before it does.
The Hawking radiation curve goes up and down as much as you want. Even when a primordial black hole would be emitting radiation at an extremely copious rate, mass still has an awful lot of intrinsic energy. Such a black hole does not need to be anywhere near evaporation to still emit huge amounts of energy.
Take a black hole that emits Hawking radiation at a rate of 10 TW -- that's on the order of the total power consumption of the human species today. Such a black hole would have a mass of about six million tones, and would have a remaining lifetime of over a half a million _years_. You're going to have plenty of time to get rid of the thing before it blows, to say the least.
--
Erik Max Francis && max@xxxxxxxxxxx && http://www.alcyone.com/max/
San Jose, CA, USA && 37 20 N 121 53 W && AIM erikmaxfrancis
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