Southern Hemosphere Vines

Amy Knutson aknutson at PEAK.ORG
Thu Dec 26 15:56:45 EST 1996


Is this effect the reason that trees also grow around in a particular 
direction (I think it's counterclockwise in this Northern Hemisphere; 
I'll have to look again).?
-Amy K.

On 25 Dec 1996, Michael L Roginsky wrote:

> In <mikalineE2uoDu.KEE at netcom.com> mikaline at netcom.com (m.lee) writes: 
> >
> >Michael L Roginsky (d_micro at ix.netcom.com) wrote:
> >} In <32BAC1C5.359B at internetnorth.com.au> Andrew Sinclair
> >} <andrews at internetnorth.com.au> writes: 
> >} >
> >} >It has been observed that in out area vines grow clockwise up
> trees.
> >} Is
> >} >this the same in other parts of Australia or do they grow
> >} ant-clockwise
> >} >in the Northern Hemisphere? CAn someone from there check and tell
> us? 
> >} >-----------------------------------------------------------------
> >} >Andrew Sinclair	     andrews at internetnorth.com.au
> >} >WebMaster	     Internet North Pty Ltd Ph 070 33 23 11
> >} >Ph 018 793 589	     http://www.internetnorth.com.au/andrews/
> >} >-----------------------------------------------------------------
> >} This one I qualify to answer. Because of the earth's rotation a
> >} secondary effect force (secondary only because is small in flight
> >} computations) called Coryollis effect causes the vortex caused by
> >} draining a sink or tub to turn "counterclockwise" - looking down on
> it
> >} in the northern hemisphere. Vines will do the same around trees. Of
> >} course as an engineer I use my right hand fist with the thumb up as
> the
> >} direction of the twist looking from bottom up. Likewise the effect
> is
> >} reversed in the southern hemisphere, or thumb down in my analogy. I
> was
> >} born and raised 1/2 degree south of the equator and the vines grew
> as I
> >} stated. Also did the water vortex on the sink. Cheers...-:)
> MAD.Micro
> >
> >It was my observation in the island nations of the South Pacific that
> the 
> >direction of the drain vortex was more a function of the fixture.
> >
> >ml
> Sorry ml, Coryollis forces are as predictable as gravity. On a free
> flowing vortex, it spins as a function of the hemisphere. It is
> possible that a peculiar drain design may modify the vortex behavior,
> but not the vines. If you don't believe me, try to reverse the
> direction of a vine growing up a tree. Unless restrained it will do the
> coil direction per the Coryollis effect. You may also search your
> encyclopedia at the library, or ask any secondary science teacher.
> Cheers... MAD.SCIENTIST.Micro at d_micro at ix.netcom.com
> 
> 



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