Re: Tree sap question

On 27 Feb 2008 17:06:46 GMT, nmm1@xxxxxxxxxxxxx (Nick Maclaren) wrote
and included this (or some of this):


In article <v54bs35g8b22vmlq601inueon3rp7sh5pb@xxxxxxx>,
®óñ© © ²°¹°-°² <ron@xxxxxxxxxxx> writes:
|>
|> >'Tain't so. Sounds plausible, until you think about it. If that
|> >were so, how would the sap reach the top of a 50' tree? Even a
|> >vacuum will raise water only 30'.
|>
|> Then try Osmosis. It's very powerful, and not limited to 30'
|>
|> http://en.wikipedia.org/wiki/Osmosis

An old and good physical rule is that, if your explanation allows
you to construct a perpetual motion machine, your explanation is
wrong.

Osmosis still requires energy to drive it.

Osmosis is not perpetual motion. The attractant is fuelled by our
beneficent sun.


--
®óñ© © ²°¹°-°²
.

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