
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1986
1839 (original); circa 1988 (replica)
1986
1986
1986
1986
1986
1986
1989
1986
1989
1989
2000-100 BCE
1988
1986
1986
1986
1986
1986
1986
1986
1986
1987
1987
1988
1990-96
1988
1988
1986
1986
1986
1986
1986
1987
1987
1987
1986
1989
1988
4000-2001 BCE
1986
1986
1989
1988
1990-95
2050-1750 BCE
1989
1987
1986-1988