Glass Lenses
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Provide a convenient way to illustrate the properties of lenses to students.
- Ground edges
These lenses are made of polished glass and have ground edges. The bi-concave lens is used for spreading out or reducing light; it has two inward-curving, symmetrical faces. Bi-convex lenses are used as magnifying or condensing lenses, with two outward curving symmetrical faces.
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Provide a convenient way to illustrate the properties of lenses to students.
- Ground edges
These lenses are made of polished glass and have ground edges. The bi-concave lens is used for spreading out or reducing light; it has two inward-curving, symmetrical faces. Bi-convex lenses are used as magnifying or condensing lenses, with two outward curving symmetrical faces.