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Keywords: Voyage in Space page031.png en Arrangement for rapid demonstration of the apparent change of the plane of swing of a Foucault pendulum While the extreme of the wing moves only a short distance from A to C its projection moves much further from a to c A Voyage in Spacehttps //archive org/details/voyageinspacecou00turnrich Herbert Hall Turner 1913 1930 A Voyage in Space Foucault pendulum |