Paul Reiser (born March 30, 1957) is an American actor. His TV credits include My Two Dads, Mad About You[?] (co-starring Helen Hunt), and a very touching performance in the British TV Drama My Beautiful Son. He has also has a very good film career.
... with a little knowledge of gyroscopes. Their striking property is that the axis of a spinning gyroscope will resist a force applied to it and will start rotating ...