
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1990-1991
1839 (original); circa 1988 (replica)
1990
1989
1987
1993
1987
1992
1989
1990
1990-1991
1990
1990
1990
1990s
1989
2000-100
2000-100 BCE
1988
1993
1988-1993
1988
1988-1992
1990-96
1993
1989
1988
1988
1990
1993
circa 1990
1987
1990
1990s
1992
1990
1987
1989
1987
4000-2001 BCE
1992
1992
1988
1988-1990
1992
1992
1990-1992
1991
1990