Measuring Focal Length of Bi-Concave Lens (Lab 13 of 23)

This video from Laser-Tec is part of a series of light and optics experiments. In this lab, participants measure the focal length of a bi-concave (DCV) lens. Information on how DCV lenses can correct human vision and other applications are highlighted. Equipment includes an LED flashlight, flashlight holder, bi-concave lens, lens holder, clothespins, a measuring tape, protractor, pencil, and white sheet of paper. The video recording runs 6:40 minutes in length.