
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1985
1985
1990
1985
1986
1985
1984
1982
1984
1986
1986
1986
1984
1985
1984
1984
1984
1984
1984
1984
1985
1986
1985
1986
1986
1990
1984
1990
1990
1990s
1990-1991
1983
1989
1985
2000-100
2000-100 BCE
1982
1988
1982
1984
1986
1985
1982
1986
1985
1984; 1983
1987
1989