For centuries, telescopes have relied on curved lenses and mirrors to observe the Universe. A team of researchers has ...

A team of scientists at the University of Utah has designed a flat lens that matches the power of traditional curved lenses ...

For centuries, the optic lens has bent light through translucent, curved material, but now flat lenses are reimagining the ...

For centuries, telescopes have relied oncurved glass lenses to bend light and bring the cosmos into focus. While effective, ...

Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object through the centre of the lens. Some ray diagrams may also show a third ray.

Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object ...