Re: Tree sap question
- From: nmm1@xxxxxxxxxxxxx (Nick Maclaren)
- Date: 27 Feb 2008 17:06:46 GMT
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.
Regards,
Nick Maclaren.
.
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