Foucault Pendulum

Foucault pendulum [Wikipedia] at the Griffith Observatory, Griffith Park, Los Angeles, California.


A closer view showing a rack of pegs that get moved by the spike beneath the ball as the earth rotates, changing the pendulum's effective angle.

Griffith Observatory

Griffith Observatory

Griffith Park Observatory and Planetarium

The Griffith Park Observatory and Planetarium.


The main dome houses the planetarium.


Brand new, state of the art planetarium projection system.