Water Boiled By Air
Take water made so warm that you can just bear your hand in it, but
that has not been boiled; put it under the receiver, and exhaust the
air. Bubbles of air will soon be seen to rise, at first very small,
but presently become larger, and will be at last so great, and rise
with such rapidity, as to give the water the appearance of boiling.
This will continue till the air is let into the receiver, when it will
instantly cease.
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