2B20  Static Pressure
            .10 Pressure Independent of Direction
            .15 Pressure Versus Depth
            .16 Pressure Versus Depth in Water and Alcohol
            .34 Hydrostatic Paradox
            .40 Same Level Tubes
            .60 Hydraulic Press
            .65 Air Pressure Lift
            .71 Water/Air Compression
2B30  Atmospheric Pressure
            .20 Barrel Crush
            .20 Crush a 55 Gallon Drum
            .25 Crush Can
            .30 Magdeburg Hemispheres
            .50 Rubber Sheet Lifting Chair
            .60 Inertia Shingles
            .70 Vacuum Bazooka
2B35  Measuring Pressure
            .15 Mercury Barometerin Vacuum
            .40 Aneroid Barometer
2B40  Density and Buoyancy
            .14 Buoyant Force
            .18 Board and Weights Float
            .20 Archimedes' Principle
            .25 Battleship in Bathtub
            .30 Cartesian Diver
            .43 Helium Balloon in Glass Jar
            .44 Helium Balloon in Liquid Nitrogen
            .45 Weight of Air
            .53 Water and Mercury U-Tube
            .54 Buoyancy in Various Liquids
            .56 Floating Square Bar
            .59 Density Ball
            .60 Hydrometer
            .61 Different Density Wood
2B60  Siphons, Fountains, and Pumps
            .20 Siphon

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