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