Equilateral Prism, Material: Acrylic, Useful for experiments in Optics, Light Refraction and Wavelengths, Will create a rainbow (even in room light) by using the simple led light of a smart phone, User will need to create a small slit in a black piece of paper, Size: 3in Hx1in W
Thermometer, Material: Glass, Dual scale, Mounted on aluminum back, Filling: 3 grams of Toluene mixed with red color, Temperature: -20 deg to 110 deg C