Double Convex Lens, Highly polished, optically true lens is excellent for physics classroom demonstrations in optics and light refraction, with ground edges, great for physics classrooms, with highest grade, Size: 250 mm focal length, Lens measures 3in diameter, 0.2 weight
Double Convex round Lens, Material: Glass, designed for physics and educational uses, Because of their educational use design, there may be minor imperfections that do not affect physical function, for educational uses, Size: 200mm focal length, 2in diameter and 5.5mm thick
Safer Flame Test kit, Identification of Metal Lab, Includes: Boric Acid 10% in Methanol, Sand, Color Flame Candles, Alcohol Burner, Diffraction Slides, Spectroscope, Small Trays, analytical technique used for the identification of certain elements, primarily metal ions
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