
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1984-1986
1982
1980
1985
1984
1982
1990s
1981-1982
1985
1980-1990
1980-1989
2000-100 BCE
1988
1980-1985
1983
1986
1984; 1983
1983
circa 1983
1987
1987
1986
1985
1989
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