
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1985
1985
1981-1990
1981-1990
1990
1981-1983
1985
1986
1985
1984
1992
1982
1984
1986
1986
1986
1984
1985
1984
1984
1984
1984
1984
1984
1985
1986
1985
1986
1986
1990
1984
1990
1990
1990s
1981-1982
1990-1991
1981
1981
1984
1983
1989
1985
2000-100
2000-100 BCE
1982
1988
1982
1987