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Old 01-23-2010, 06:23 AM   #11
Erick Mead
 
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Dojo: Big Green Drum (W. Florida Aikikai)
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Re: yin/yang in taiji

Quote:
Mike Sigman wrote: View Post
Hmmmm.... that's about as clear as one of the Apocrypha (which can be translated to mean anything you want, particularly after the fact)
Mike Sigman
No. Plainly applicable.

It is Coulomb's arch of tangent spheres which I have posted long ago -- it is stable in compression under its own weight in one -- and only one -- line of thrust, conforming to that typical shape. Anything else collapses without resistance -- "like pushing on a rope"

How applicable? Cut the diagram in half vertically. Turn the right half 90 deg. clockwise and attach its bottom to the top of the left half -- the resulting line of thrust is typical of that of the human body in hanmi extended in tegatana facing right exerting or bearing a lateral load to/from the right. Maintain that profile (technically called the "funicular line") in response to applied load and the structure will bear it compressively until its material fails. Collapse it -- cleverly -- with exceedingly small deviations from the line, and you can direct the resulting plane of action -- which involves rotation(s).

Last edited by Erick Mead : 01-23-2010 at 06:26 AM.

Cordially,

Erick Mead
一隻狗可久里馬房但他也不是馬的.
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