Glass Mirrors, Set Of 6, 1 Each

The Glass Mirrors, Set Of 6 by United Scientific is a set of six 50 mm diameter glass spherical mirrors with back surface silvering: three concave and three convex. Focal lengths are 50, 100 and 200 mm and -50, -100 and -200 mm, so students can compare converging and diverging mirrors of matching strength. It is used in physics classrooms for image formation and mirror-equation practicals.