The Foucault Pendulum
What is a Foucault Pendulum? Well, according to the Smithsonian Institute: "The Foucault Pendulum is named for the French physicist Jean Foucault [(pronounced fü-'kO)], who first used it in 1851 to demonstrate the rotation of the earth. It was the first satisfactory demonstration of the earth's rotation using laboratory apparatus rather than astronomical observations."
So, basically, it's a large pendulum that knocks down pegs as the day progresses. It may look like it's the pendulum that changes direction to knock down the pegs, but you need to keep in mind, that it's the earth that is moving the pegs into the pendulum's path!
There are at least 30 of these pendulums on display in the US, and who knows how many are in the rest of the world. Perhaps we can find out!
- One Foucault Pendulum can only be claimed once.
- You may only log one finding of this cache.
- Post the coordinates of your find (or of the nearest door if you lose signal indoors).
- Include in your log the city, state, country and the name of the museum (if applicable) of your find.
- Do not post a location already posted by you for another locationless cache - such as a museum containing the goal of another LC
- Post a picture of the pendulum.
- Post a picture of the pendulum with your GPSr.
- A picture of a museum sign might be nice too.
Check out the Encyclopedia Smithsonian for more information on the Foucault Pendulum.