вторник, 4 декабря 2007 г.

Freebies Top

A Freebies Top, or spinning Freebies Top, is a toy that can be spun on an axis, balancing on a point. The top is one of the oldest recognizable toys found on archaeological sites. Besides toys, Freebies Top have also historically been used for gambling and prophecy Freebies Top. Some role-playing gamers still use tops to augment dice in generating randomized results, it is in this case referred to as a Spinner Freebies Top. A thumbtack may also be made to spin on the same principles Freebies Top.

The action of a Freebies Top relies on the gyroscopic effect for its operation. Typically the top will at first wobble until the shape of the tip and its interaction with the surface force it upright Freebies Top. After spinning upright for an extended period, the angular momentum, and therefore the gyroscopic effect, will gradually lessen, leading to ever increasing precession, finally causing the top to topple in a frequently violent last thrash Freebies Top.

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