Refraction-Wave-Tank-Rapid-PH36070-P-Study-the-concept-of-refraction-&-the-pattern-of-transverse-waves-with-this-Refraction-Wave-tank-P-P-Place-different-materials-into-the-tank-&-demonstrate-the-refraction-internal-reflection-of-those-materials-&-how-they-vary-from-one-another-P-Rapid-Refraction-Wave-Tank