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Re: air blowing out of an old mine



Herbert H Gottlieb says:

Please explain. Why should air blow DOWN a mine shaft during the summer?
In the summer the air is warm.

The outside air is warm, but the mine shaft air is cool, and hence more
dense.
Imagine replacing the cool air in the shaft with an even denser fluid.
What happens when you take a vertical tube full of water, and then remove
the endcaps?

--
--James McLean
jmclean@chem.ucsd.edu
post doc
UC San Diego, Chemistry