Re: .Bernoulli and curve balls.

[palmer@sfu.ca (Leigh Palmer)]

> Leigh
> I think your traction explaination makes curve balls go the wrong way.  If
> viewed from the Goodyear (or Fuji) blimp a right handed pitcher throws a ball
> with a counterclockwise spin, which breaks away from a right handed batter.

That was my point. The argument does not work. Though that is the correct
answer for tires, it is not the correct answer for curve balls. I must
not be writing very clearly if that did not come across.

> Doesn't the traction model work for curling?  I'd expect the leading edge to
> bite into the ice while the trailing edge rides on a film of water.

No, it doesn't work. Curling stones curl like curve balls. Expectations
don't always make for good physics - unless you have a very well
developed intuition!

Leigh