This versatile system allows students to see and control light beams. Scattering agent added to water in the plastic tank makes laser beams visible. Students easily control observations involving simple refraction and total internal reflection.

• Demonstrate gradual (curving) refraction with sugar!

• Split a single laser beam with the diffraction grating.

• Show why daytime skies are blue while sunrise and sunset skies are red.

• And more, from the included Instructions.

Includes: Laser Viewing Tank 18" x 6" x 1", multi-line diffraction grating, bottle scattering agent, acrylic stirring rod, removable opaque background screen, and instructions. Laser not included.