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Re: bending of object thrown into pool



Carl, please clarify the question.

I saw references to "throwing" and "launching" and other
highly dynamic verbs.

If you actually _throw_ a stick into a pool, you must
first worry about how it *behaves* in absolute terms,
before you worry about how it appears.

The behavior will be verrry complicated. In addition
to plain old buoyancy there will be hydrodynamic
forces such as lift and drag, which in turn depend on
the angle of attack and the sideslip angle etc., not
to mention dependence on Reynolds number etc. etc. etc.

In contrast if you have a static stick just sticking
into a quiet pool, it is straightforward to determine
the appearance by ray-tracing. The result is a
combination of Snell's law and projective geometry.