Glass Lenses
Biconcave lens, glass, 38 mm (1.5"), 500 mm (20")
: : 470013-318
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.
- Description:Biconcave lens, glass
- Diameter:38 mm (1.5")
- Focal length:500 mm (20")