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Solar Tube

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Product Info

Watch this amazing tube gently lift into the air. At 60 feet long with a 72 inch circumference, this is the largest Solar Tube available. Run to fill with cool air, tie off the end, and move it into the sun. As the bag heats, the 240 cubic feet of air expands, becomes less dense, and floats. A great demo of density, thermodynamics, solar energy and more. Hold onto the string! Our Solar Tube is made from thin plastic in order to float; use care when handling for best results. Includes tube, string, and instructions.


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