PurposeIn this activity, students will investigate the behavior of light as it passes from one transparent material to another.
Discussion When light passes from one transparent material to another, it undergoes refraction. If the light crosses the boundary between the materials at an angle, the light changes direction. In this activity, you will see how the direction changes when light travels from air to water and when light travels from water to air.
Light beam viewing tank (or equivalent), opaque white tank insert, stirring rod, access to water access to scattering agent (Mop-N-Glo™, Pine-Sol™, powdered milk, or equivalent), laser pointer