
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1978
1979
1985
1980-1990
1979
1986
1984; 1983
circa 1983
1985
1978
1978
1839 (original); circa 1988 (replica)
1990
1980
1985
1984
1982
1984
1986
1986
1986
1984
1985
1984
1984
1984
1985
1984
1984
1984
1985
1986
1985
1986
1986
1990
1984
1990
1990
1990s
1981-1982
1981
1979
1981
1984
1985
1982
1980-1989