spiral stairwell
The above is a stairwell at the Franklin Institute Science Museum in Philadelphia, showing the large Foucault pendulum that hangs from the roof to the basement floor, where the star pattern highlights the motions of the pendulum as it's affected by the rotation of the Earth...like this
Quote:
Originally Posted by Jetée
big cylinder (on the left: you wouldn't happen to know its purpose?...
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Jet,
that is a large sign post, either a billboard or a traffic sign, since Interstate I-95 runs right above that skatepark...here's another pic I took better showing the highway running overhead:
