Cool Labs

Lab #27.8   Light: Sunballs
Lab #27.8 Light: Sunballs

PurposeIn this activity, students will estimate the diameter of the sun. Discussion Take notice of the round spots of light on the shady ground beneath trees. These are sunballs—images of the sun. They are cast by openings between leaves in...

Lab #27.7   Light: Pinhole Camera
Lab #27.7 Light: Pinhole Camera

Purpose In this activity, students will observe images formed by a simple convex lens and compare cameras with and without a lens. Discussion The first camera used a pinhole opening to let light in. Because the hole is so small,...