Lenses can either be convex/ converging or concave/ diverging. Convex lenses take parallel light rays from distant objects and bend them to converge at a single point known as the focal point.

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.

Periscope camera lenses have grown in popularity, especially in the premium smartphone segment. But what is a periscope zoom lens? We explain.

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

In other words, the surface of the liquids formed concave or convex curves similar to shape of lenses used in cameras and eyeglasses. And both Kuiper and Hendricks figured out an innovative way to ...

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 ...

The properties of concave and convex lenses were first described around the year 1000, although magnifiers in the form of lens-shaped crystals or glass may have been used much earlier.