Next time you’re at Klyde Warren Park, pop across the street to the Hunt Oil Tower. If you’re polite to the guard in the lobby, he’ll let you watch the two-story Foucault pendulum swinging over a beautiful mosaic floor with 2,600 stone pieces in it. Explain to your kid how the pendulum reveals that the earth is rotating right under it. 1900 N. Akard St.
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