Ah -- you see, to me the pendulum's Foucault came first.
There is a Foucault pendulum in the Technical museum of Stockholm which I
saw demonstrated when I was in middle school, back in the sixties. They
started it with us watching, then gave us the tour of the museum for an
hour and then brought us back to see that the earth had moved under this
awesome swinger.
Eva
who is still awestruck with the vastness of it-all