This self-contained unit allows students to measure and study refraction of
light.
The angle of incident and refractive rays are easily seen with the
help of a built-in laser as its light source.
Add water up to the tank's midline and create a surface that precisely transmits and reflects the laser beam for student observations.
The laser revolves around the
circular graduated scale and can be set at any point. Students can easily
observe light rays as they travel from air into water, water into air, and
water into water.
Circular scale is 6-3/8" diameter.
 You can also detach the apparatus from the tank to perform refraction and reflection experiments with the included prisms and mirrors!
Full kit contains 4 prisms and 2 mirrors.
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