In this experiment a double convex 50 mm lens is compared with a 140 mm plano convex lens. The wooden optical bench allows for fairly precise experime


In this experiment a double convex 50 mm lens is compared with a 140 mm plano convex lens. The wooden optical bench allows for fairly precise experiments in the classroom and consists of a meter rail on which carriages are placed against a millimetre scale. The light source is a focused light emitting diode that is bright enough to use without a blackout. The light is cast onto a white metal object screen of 75mm diameter which has a round aperture with a wire grid. The image is focused by a lens onto a white metal receiving screen which can have a squared paper insert. Mirrors, object needles, diffraction objects and Young's slits can also be used in the setup.


Size: 5760px × 5364px
Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: aperture, bench, carriages, comparing, convex, diode, double, emitting, experiments, focal, focus, image, length, lens, light, needle, object, optical, plano, projected, rail, receiving, scale, screen, setup, source