Make your own liquid “fireworks” with this simple and safe activity.

At first glance, the giant see-through-erector-set-like structure seems to be a realization of one of Leonardo da Vinci's mechanical inventions.

Is pure water colorless?

A mirror and a lens mounted on top project a live image of the outside view into a darkened room.

Listen to a 27-foot-tall harp that's strummed by the wind.

Construct a simple battery that can power a light.

Take off and fly in a mirror that makes half your body look whole.

Learn how to fly with this neat mirror trick.

Send waves down a spring to watch them travel and interact.

Parabolic dishes collect and focus sound waves and reflect them to participants seated within them.

A reflector stretches light from colored tiles into long bright ribbons.

Find order in well-mixed chaos.