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misc:ruler_force [2013/03/29 12:54] – tag added denisbehr | misc:ruler_force [2017/06/28 16:58] (current) – external edit 127.0.0.1 | ||
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====== Ruler Force ====== | ====== Ruler Force ====== | ||
+ | A 19th-century stunt involved balancing a ruler between one's outstretched forefingers (or on the edges of butter knives), and then sliding the hands together. No matter what the starting positions (even if asymmetrical) or the speed(s) of movement, the hands will always come together at the exact center of the ruler. | ||
- | This force of a number made by balancing a ruler on a spectator' | + | A clever (and more magical) application |
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+ | In the 1990s, the idea was reinvented (with a repositional gimmick) by Ton Onosaka, and marketed as "The Divining Rod." | ||
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