In article ,
®óñ© © ²°¹°-°² 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.