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With the Hook Cartesian Diver and Boyle's Law Physics and Chemistry Kit, demonstrate the Boyle's Law relationship between pressure and air volume and how air volume acts to regulate buoyancy. This toy really thrives under pressure!

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A toy that really thrives under pressure! Demonstrate the Boyle's Law relationship between pressure and air volume, and how air volume acts to regulate buoyancy. Requires water, a 2-liter soda bottle, and hands to squeeze it. Science in a soda bottle—with obvious ups and downs! Two Cartesian Divers are available: Squidy (Catalog No. AP8721) and Hook (Catalog No. AP4548). Both kits are eye-catching variations on the classic cartesian diver!