ASTRONOMY - COSMOLOGY - MODELS OF THE UNIVERSE	NC State University Faculty Access
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Description: Five Styrofoam balls are threaded onto a rubber cord at equal intervals. Pull on the free end an watch the expanding intervals. The top illustration shows the balls stretched out and the bottom shows the balls unstretched. Purchased/Built: built Setup Time: 20 min Quant. in Demo Room: 1 Demo References The American Journal of Physics AJP 50(6),571 Pull on a rubber rope with "galaxies" attached.
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