
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1992-1994
1985-1989
1993
1987
1989
1986
1993
1990-1991
1985
1994
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
1994
1989
1986
1985
1990
1989
1985
1988-1993
1985
2000-100
2000-100 BCE
1986
1985
1988
1994