United Scientific Reflection & Refraction Tank

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This product effectively demonstrates the laws of reflection and refraction. The 16cm diameter acrylic water tank has a 360 degree scale and a moveable arm carrying a laser activat ed by a push-button. Thumb screws on the side of the laser harness can be adjusted to finely position the laser beam. Requires two AAA batteries (not included). Includes activity guide. Please Note: This product emits laser light. Max. ouput power Show more