From: Anders Sandberg (asa@nada.kth.se)
Date: Wed Aug 18 1999 - 11:51:14 MDT
"Clint O'Dell" <clintodell@hotmail.com> writes:
> I'm no physicist, but doesn't anti-matter and matter annihilate each other?
> How could you capture anti-matter that is floating around with matter?
Most of what we consider matter is actually empty space, and
especially high up in the atmosphere there is enough space so that
antiparticles can move for fairly long distances before crashing into
some matter (in medical PET scanning radioactive substances are used
that release positrons (i.e. anti-electrons) and they on average just
get 5 millimetres in the brain before annihilating).
-- ----------------------------------------------------------------------- Anders Sandberg Towards Ascension! asa@nada.kth.se http://www.nada.kth.se/~asa/ GCS/M/S/O d++ -p+ c++++ !l u+ e++ m++ s+/+ n--- h+/* f+ g+ w++ t+ r+ !y
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