On Apr 14, 8:04 pm, Tim Little <t...@[EMAIL PROTECTED]
>
wrote:
> On 2008-04-14, Luke Campbell <lwc...@[EMAIL PROTECTED]
> wrote:
>
> > (B) High energy collisions can create long lived dangerous black
> > holes. Consequently, collisions of cosmic rays with matter
> > throughout the galaxy will have created a number of high velocity
> > black holes which should be zipping through our planet with some
> > frequency. Where are they?
>
> I don't think we'd detect them. If they don't decay then they
> probably only interact gravitationally - and their mass would still be
> tiny. Who would notice if a flood of such microholes passing through
> ate even a few billion atomic masses worth of material per second,
> throughout the volume of the Earth? Maybe a neutrino detector would,
> but I expect they'd throw out such a signal as spurious.
Again we have two possibilities. If they react with matter, they
occasionally eat a charged particle. This would give you a massive
(TeV scale) charged object, which would leave ionization tracks. You
could detect it in, for example, bubble chambers, showing a high
energy particle with an unusual charge to mass ratio.
On the other hand, if they don't react with matter (or hardly ever
react) then they are not a danger to earth.
Luke
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