Use your cell phone to explore the mini-scopic world.

A balloon acts as a lens to focus sound.

A lens creates an image that hangs in midair.

Gelatin can do much more than just wiggle and jiggle.

Test your vision—just by moving your head.

Light projected through a drop of water reveals an abundance of life.

A round bowl of water can act as both a magnifier and a lens.

Determine the field diameter of a compound microscope.