Ball in Glass Drop

Five short videos

(For a year or so I had the question, "Does anyone know how to rotate .mpeg files? Then, in January 2001, Park Kyungjae kindly told me about the program VideoMach.  This program can do what many programs costing many times more can not do, including rotate an mpeg!)

Five short videos

(For slow motion viewing, down load to your computer and use a viewer such as VMPEG-1.7 that has playback speed control.)

Three more vides with a possible explanation.

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