The first telescopes refracted light, and today reflectors dominate, but there is a third way to make light focus, and it ...

As the vibrant festival of Holi approaches, excitement fills the air. People eagerly anticipate playing with colors, dancing.

For centuries, cameras and telescopes have relied on curved glass or plastic lenses to bend light and bring images into focus ...

I’ve never found affordable and readily accessible cosmetic lenses in Australia. Instead, I’ve resorted to buying my year’s supply on family trips to India and lugging home copious boxes. So the ...