Monday, January 5, 2015
Negative pressure in the xylem tubes of trees
"Trees create immense negative pressures of 10's of atmospheres by
evaporating water from nanoscale pores, sucking water up 100m in a state
where it should be boiling but can't because the perfect xylem tubes
contain no air bubbles, just so that most of it can evaporate in the
process of absorbing a couple molecules of carbon dioxide."
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