
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1978
1974
1982
1985-1989
1978
1974
1984; 1983
1987
1989
1975
1975-1985
1979
1986
1975
1976
1979
1985
1984
1986
1976-1979
1976
1982
1980
1975
1983
circa 1983
1976
1987
1983
1984
1975
1974
1974
1974
1974-1975
1975
1975
1975
1975
1974
1975
1975
1986
1974
1974
1975
1974
1975