
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1976-1979
1976
1984-1986
1992-1994
circa 1980
1975
1985
1985
1976-1982
1981-1990
1980-1990
1979
1974
1981-1990
1978
1978
1974
1990
1981-1983
1979
1985
1984
1994
1982
1984
1975
1974
1974
1974
1974-1975
1975
1975
1975
1975
1974
1975
1975
1986
1974
1974
1975
1975
1975
1975
1974
1986
1975
1986
1984