
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1839 (original); circa 1988 (replica)
1984-1986
1990
1985
1985
1984
1984
1986
1986
1986
1984
1985
1984
1984
1984
1985
1984
1984
1985
1985
1986
1986
1986
1990
1984
1990
1990
1990s
1983
1989
1985
1993
1988-1993
1984
1990-1991
1984
1984
1986
1986
1986
1986
1986
1986
1989
1990
2000-100
2000-100 BCE
1985
1988