
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1995
1984-1986
1978
1982
1992-1994
1993-1995
1985-1989
1978
1984; 1983
1993
1987
1989
1995
1979
1986
1993
1990-1991
1985
1984
1994
1986
1992
1982
1980
1983
circa 1983
1994-1995
1993-1995
1995
1995
1995
1987
1983
1984
1986
1986
1986
1984
1985
1984
1984
1984
1984
1984
1985
1984
1984
1984
1985