
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1839 (original); circa 1988 (replica)
1990
1990
1990
1990
1990s
1989
1993
1988-1993
1990-1991
1989
1990
2000-100
2000-100 BCE
1988
1989
1990-1991
1988
1990
1990s
1992
1990
circa 1990
1988-1992
1993
4000-2001 BCE
1989
1989
1992
1988
1988
1990
1992
early 1990s
1988-1990
1990-95
1991
1990
1990
1991
1992
1989
1991-1992
1991
1988
1993
1993
1990-1992
1989