A Cartesian diver Introduction This is an experiment named after René Descartes (1596–1650). Descartes was a French scientist and philosopher. The Cartesian diver can be used to illustrate the behaviour of gases and liquids when compressed. In this experiment a Cartesian diver is constructed and some of the properties observed. What to do 1. Screw the hex nut onto the base of the pipette until it is held tightly in place. 2. Cut off all but 1 cm of the pipette stem. (This is the diver.) 3. Place the diver in a beaker of water. Squeeze the bulb of the pipette to force air out and release to allow water up into the diver. Repeat this until the diver is about half full of water.
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