Lenses are used in cameras, telescopes, binoculars, microscopes and corrective glasses. A lens can be convex ... or concave.

Learn about and revise lenses and their power, real and virtual images, and ray diagrams with GCSE Bitesize Physics.

Source: NOVA: "Galileo's Battle for the Heavens" This resource was adapted from NOVA: "Galileo's Battle for the Heavens." The first telescopes, invented in 1608, consisted of two simple concave ...

We compare and contrast concave and convex lenses by drawing ray diagrams.