On Mon, 14 Apr 2008 02:29:23 -0500, Tim Little
<tim@[EMAIL PROTECTED]
> wrote:
>On 2008-04-13, Batroc Z Leaper <hotfrog@[EMAIL PROTECTED]
> wrote:
>> This is just idiot junk science. Ultra high energy cosmic rays far
more
>> energetic than anything any human collider can produce have been
hitting
>> the earth for billions of years. We're still here.
>Ultra high energy cosmic rays far more energetic than anything any
>human collider can produce couldn't possibly have less than Earth's
>escape velocity, either. Any black hole produced in such a collision
>would have a velocity within a whisker of c and would go straight
>through the Earth without noticeably slowing.
>A micro black hole created in a collision from particles moving in
>opposite directions theoretically could be created moving slow enough
>to remain within Earth's vicinity. So I don't think that particular
>argument is valid.
What does that have to do with the LHC? The LHC collides particles
moving in *different* directions, but not *opposite* directions. To
arrange true 180-degree opposed collisions would be a neat trick,
but an exceedingly difficult and utterly unnecessary one.
The actual collision energy and geometry of the LHC is such that the
CG of whatever comes out of a collison will be headed sideways at
just over half of lightspeed. I'm pretty sure Earth's escape velocity
is rather less than that.
>Of course even if it didn't decay immediately, the odds against it
>having such a tiny momentum in all three axes energy are astronomical.
That too.
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