
Foucault Pendulum for Demonstrating the Earth's Rotation
1988
1988
1987
1986
1986
1986
1986
1986
1986
1986
1986
1986
1987
1986
1986
1986
1986
1986
1986
2000-100 BCE
1988
1986
1988
1988
1839 (original); circa 1988 (replica)
1988
1986
1986
1986
1986
1986
1986
1986
1987
1987
1988
1990-96
1986
1987
4000-2001 BCE
1990-95
1988
1987
2800 BCE
1988
circa 3000 BCE
1988
2050-1750 BCE
1988
1986-1988
circa 1986