Quick preview Adjust the pistons and input force to lift a tiny excavator arm.
By The Bugged Dev
Experiments · Creative references
Send light through different materials and observe reflection and refraction.
By PhET · University of Colorado Boulder ↗
Open experience ↗Opens on the creator’s website01 / GET STARTED
Turn on the light source and adjust the angle or material.
02 / ABOUT THE CREATION
Visible rays make it easier to compare what happens at a boundary.
03 / MORE TO KNOW
The rays are an educational representation.