Colloidal photonic glasses offer an appealing way to produce vivid colors without any chemical dyes—but so far, a stubborn optical effect has long prevented them from generating a true red color. Now, ...

Add Yahoo as a preferred source to see more of our stories on Google. You perceive electromagnetic radiation in the form of light in all the colors of the rainbow. MirageC/Movement via Getty Images ...

The world is awash with the color purple — lavender flowers, amethyst gemstones, plums, eggplants and purple emperor butterflies. But if you look closely at the visible-light portion of the ...

When it comes to appearances, the universe is a tricky place. Visible light occupies merely a sliver of the electromagnetic (EM) spectrum. To study the cosmos in its entirety, scientists must peer ...

When you look up at the night sky, it's easy to think that the universe is a never-ending sea of blackness. But if you measured the visible light from all of the luminous celestial bodies out there, ...

Vibrant red This motif of a parrot was coloured using the new photonic glass. The two photos were taken at different angles with respect to incident sunlight. (Courtesy: Seungwoo Lee) Photonic glasses ...

If you’ve ever wished you could see the world though the eyes of another animal, we have good news for you. We also wondered about that and, being scientists who specialise in colour vision, have ...

One of my favorite things about science is how a very simple question can lead you down a rabbit hole. Here’s one for you: What color is the sun? Most people, I’d wager, would say yellow. You probably ...

QUESTION: Which animal can see the widest spectrum of colours? Mantis shrimp have remarkable colour vision. They have as many ...

Discover how a 135-year-old photography process can capture “real” colour, and why Steve Mould says modern colour photos are ...