Celebrate light with the IYL2015. Videos, articles, science projects, and more!

Want to know how light works? Check out these science projects!

Wish you could see the physics of light? Now you can with these simulations from the University of Colorado Boulder.

Watch this three-minute video to learn more about how light travels through reflection and refraction.

Click here for 123 optical illusions that teach us about our visual perceptions...and their limitations.