Is black a colour? Black isn’t in the rainbow, but where does it fit in the colour spectrum? What makes something appear ...

Ever wondered why the sky is blue? It's not just a reflection of the ocean! Sunlight, seemingly white, is a mix of colors. As it enters Earth's atmosp ...

Earlier, and perhaps more basic, LED masks usually provide just one primary colour treatment mode, such as red or blue, ...

What color is moonlight typically, and what other colors can moonlight look like from our perspective on Earth?

Sunlight is not just light. It’s a spectrum. If you’ve ever seen a rainbow or passed sunlight through a prism, you’ve seen ...

Quantum sensors have become important tools in low-energy particle physics. Michael Doser explores opportunities to exploit ...

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 ...

A single printing resin can take on either soft or hard properties when printed with a 3D printer. This requires a special ...