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How many breathes would it take to inflate an 8-foot long, 10-inch diameter bag? Just ONE using Bernoulli's principle! Commonly called the Wind Tube or Wind Bag.
You'll get "carried away" by this bag! Use the Solar Bag to demonstrate concepts of energy, thermodynamics, density, and buoyancy!
Air has weight, exerts pressure, and can be squeezed and compressed. The Cartesian Diver demonstrates all three properties using hands-on experiments. Single Cartesian Diver is dressed up like a colorful squid.