In the spirit of the holidays.
Let's assume that a dreidel is spinning counter-clockwise at frequency $f$ on a table.
From external point of view, what will I see if I rotate the table clockwise at the same frequency, assuming that both the dreidel and the table are spinning with the same center of rotation?
Is it possible that an external observer will see the dreidel freeze? Is it possible for an external observer to see the dreidel at all?
Any help is appreciated.