"Foucault pendulum"^^ . . . "0"^^ . . . "102716574"@en-us . "103386544"^^ . "pendulum with a long wire; can swing in any direction; the change in the swing plane demonstrates the earth's rotation"@en-us . . "103262963"@en-us . "Foucault pendulum"@en-us . . "0"^^ . . . "03386544-n"^^ . .