How in the World?

How in the World?

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An illustrated celebration of human ingenuity explains the underlying principles of 425 key technological innovations, revealing the secrets of lasers, holograms, and moreLevitation: how a magician makes the girl float in thin air Making mystical passes, and speaking in a low soothing voice, the magician puts his ... Once this is done, the girl is seen floating in midair on top of the apparently unsupported board.

Title:How in the World?
Publisher:Readers Digest - 1990


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