
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1982
1984; 1983
1987
1986
1985
1984
1986
1982
1980
1983
circa 1983
1987
1983
1984
1986
1986
1986
1984
1985
1984
1984
1984
1984
1984
1985
1984
1984
1984
1985
1986
1986
1986
1985
1986
1986
1986
1986
1986
1986
1984
1981-1982
1980
1981
1981
1981
1984
(1962); 1982
1986