Ajax Scientific Polished Glass Double-Convex (Bi-Convex) Lens, Spherical, 50 mm Diameter, 50 mm Focal Length

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Double-convex (bi-convex) lens for demonstrating optical principles and effects for students
Two outwardly curved surfaces converge light rays to a point
Focal length is 50mm
Lens is 50mm in diameter
Made of polished glass with ground edges

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