
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1985-1989
1984; 1983
1987
1989
1986
1990-1991
1985
1984
1986
1992
1987
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
1990
1984
1990
1990
1990s
1990-1991
1989
1984
1986
1985
1990