
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1985
1986
1985
1839 (original); circa 1988 (replica)
1990
1985
1986
1986
1986
1985
1985
1985
1986
1985
1986
1986
1990
1990
1990
1990s
1990-1991
1985
1989
1986
1985
1992
1989
1989
2000-100 BCE
1988
1986
1986
1986
1986
1986
1986
1987
1987
1990-1991
1986
1986
1985
1985
1990
2000-100
1988
1990-96
1988
1988