Toothpick Bridges

[print this photo on Shutterfly]   Gallery: Cambridge School Gallery  Album: Science  Album: Toothpick Bridges    8 (of 24) The strings are in tension, and the cross bar is in compression as they should be. The uprights look like they are encountering a shear force without bricks on top. 8 (of 24)  Gallery: Cambridge School Gallery  Album: Science  Album: Toothpick Bridges

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