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Re: A really, really, really, really stupid idea. Really



Some in this discussion still seem to imagine that sand sized blast debris 
can be imbedded in bone surfaces or skin at substantial range from an 
meteoritic 
explosion. Tiny particles can travel at high velocities if they are being 
carried along by air that is itself an equally fast moving part of the 
supersonic 
shock wave (shock waves are shock waves because they move faster than sound) 
produced by the explosion, which are limited to the region immediately 
surrounding the point source. Anything hit by high velocity microdebris in this 
zone 
will be so severely damaged by even more obvious shock and heat that the sand 
impact will be incidental. The supposedly impacted tusks and bones should be 
shattered and scorched. Any living animal will be killed outright, the debris 
will not be the killing agent. Once the micro-debris hits stable air it slows 
down to harmless terminal velocity in well under a kilometer. Even pebble sized 
objects will slow down to a 100 mph in a few kilometers. That is why being 
hit by a round musket ball or grape shot at long range was not lethal. 

The observation that bullets fired up into the air can severely injure 
persons when they eventually return is not appropriate to the impact scenario. 
Bullets retain high velocity only when the rifled gun is fired enough degrees 
from 
vertical that the slug describes a ballistic arc in which the bullet always 
maintains high speed because its streamlined tip is pointed by the air flow in 
the direction of travel, so victims of random gunshots are always somewhat down 
range. This situation of course never applies to nonaerodynamic, nonspin 
stabilized impact debris. If the gun is fired straight up then the bullet comes 
to 
a brief halt at its maximum altitude, destabilizes, and tumbles. Basically 
the bullet acts as if it were simply dropped from the same altitude. On the way 
down it never exceeds it unstablized terminal aerodynamic velocity of about 
100 mph and will not seriously harm anyone it hits. 

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