[O.B.Left]

First thing.

The actual , in the field , clubhead orbit , given the moving centre and lever contraction and extension does not describe a perfect circle . But the geometry of the circle still holds as a model for investigation. If this is still problematic then consider this : nearing the impact area (where the rubber hits the road) the orbit is at its most circular nature given lever extension. Still not perfectly circular but darn close.

Also the geometry of the ellipse is born of the geometry of the circle.

I know that some have used this against homer in the past but i wont mention that as it would be a violation of rule #1 and Id have to ask myself to delete or edit my own post.