Extensive collection of experiments illustrating fundamental principles of physics. Demonstrations on this disc: Rotational Acceleration and Energy - angular acceleration machine, bike wheel angular acceleration, air rotator with deflectors, rolling bodies on incline, spool on incline, bike wheel on incline, spool with wrapped ribbon, Maxwell ’s yoyo, loop t he loop, penny drop stick, hinged stick and ball, cener of percussion, Foucault pendulum, Coriolis effect. Kit contains: DVD with English and Spanish audio tracks and subtitles, and bilingual study guide.