
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1986
1839 (original); circa 1988 (replica)
1990
1993
1986
1986
1986
1986
1986
1986
1990
1990
1990
1990s
1990-1991
1993
1988-1993
1989
1986
1987
1990-1991
1986
1986
1986
1986
1986
1986
1986
1986
1987
1992
1989
1990
1989
2000-100
2000-100 BCE
1988
1988
1990-96
1988-1992
1986
1988
1988
circa 1990
1986
1986
1986
1986
1986