
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1987
1989
1987
1990
1990
1990
1990s
1989
1990
1989
2000-100 BCE
1988
1988
1990-96
1839 (original); circa 1988 (replica)
1989
1988
1988
1990
1988
circa 1990
1987
1990
1990s
1990
1987
1989
1987
4000-2001 BCE
1990
1990
1990
1990
1988-1990
1990
1989
1990
1988
1989
1988
1988
1989-08
1987
1989
1989
1987-1988
1989
1987
1990