
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1985-1989
1987
1989
1986
1990-1991
1985
1986
1992
1987
1986
1986
1986
1985
1985
1985
1986
1986
1986
1985
1986
1986
1986
1986
1986
1986
1990
1990
1990
1990s
1990-1991
1986
1985
1989
1985
1985
2000-100
2000-100 BCE
1985
1988
1985
1986
1989
1990
1988
1988-1992
1985
1990-96
1985
1992