Laser Refraction Tank

This clear tank has a circular scale graduated in 5° increments, making it easy for students to measure angles of reflection and refraction. Students can adjust the pivot-arm mounted laser to any angle along its full 360° range and measure the angle of reflection or refraction. They can also rotate the laser and observe first a reflected ray, then both a reflected and refracted ray, and finally just a refracted ray. Leveling screws on the tank's base make leveling quick and easy.