Light Color and Seeing

Measure the brightness of the sun using cooking oil and a white card.

Measure the brightness of the sun using cooking oil and a white card.

Explore the limits of vision—get to know your rods and cones.

Grab a friend and measure the outer limits of your vision.

Build a homemade protractor using your own body parts.

Turn a flickering light into a complete image in your eye.

In this video, Exploratorium educator Aiona Bones invites you to look through the vortex.

Can you see pictures in the air?

Find out how to make clear things invisible (temporarily).

Put your mind to tackling these classic engineering problems.

Consider the combinations of colored light that illuminate our world.

Experiment with colors using colored light bulbs to cast shadows.