jerry warner wrote in message ...
Black holes or related high energy entities on the order of a molecule or an
atom or
smaller, must be exceedingly rare, as compared with say neutrons? Neutrons do
pass through the Earth daily without any short term recognition.

Do you mean "neutrons" or "neutrinos"? Neutrons can be stopped by a
swimming pool. (Ask any nuclear power plant operator.) They
certainly cannot pass through the Earth.

Neutrinos, OTOH, are a vastly different story. Every night trillions
of them zip through you harmlessly every second, after having breezed
through thousands of km of rock. (I don't know the exact number,
because of all the treatments and dissertations of the solar neutrino
problem and the expected number of neutrinos, i have yet to find a
single source that actually states what that number is. Sam?
Whatever the number, it's unfathomably huge.)

Not that neutrons are rare either. Something on the order of half
your body mass is neutrons.


Clear skies!

--
------------------- Richard Callwood III --------------------
~ U.S. Virgin Islands ~ USDA zone 11 ~ 18.3N, 64.9W ~
~ eastern Massachusetts ~ USDA zone 6 (1992-95) ~
--------------- http://cac.uvi.edu/staff/rc3/ ---------------