Pitcher

Buoyant force depends on the depth of displaced water, not the total volume of water in the container. A wooden cylinder floats in a snug-fitting beaker with only 40 mL …

Demonstrates how refractive index contrast at interfaces determines optical behavior. Dry glass spheres appear opaque due to multiple glass-air reflections; adding water reduces the index mismatch, making the spheres nearly …

A three-chamber apparatus demonstrates both siphon and pump action as water translates between vessels. Pouring water into the top chamber compresses air in the bottom chamber, which forces water from …

Water is poured into a bag between parallel capacitor plates while a meter displays the capacitance in real time. Students watch the reading climb dramatically, providing direct evidence that dielectric …

A water-filled glass cylinder spun on a centrifugal machine produces a parabolic free surface. Students see that the equilibrium shape results from the balance of gravitational and centrifugal forces in …