Many thanks for the clarification. I, too, did not know of the "other"
Foucault, and was more than a little puzzled as to why Umberto Eco should
be naming a novel about the contemporary person of that name.
Rachel Heckert
>"In 1851 the astronomer Jean Bernard Leon Foucault, while working on a
conical >pendulum clock to regulate a telescope drive, realized that with
an ideal pendulum >supported at the north pole "the motion of the earth,
which forever rotates from west to >east, will become appreciable in
contrast with the fixity of the plane of oscillation".
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