Rainbows are often seen as symbols of luck, and if you spot one, consider yourself lucky. That’s because a few things need to align, both in terms of weather and physics: a little rain, some sunshine, ...

As I write, a window prism casts a cheery rainbow-stripe that drifts with the hours across my ceiling. Color perception, and our enjoyment of it, is part of our evolutionary legacy.

The astronomers also converted the color to the red-green-blue values used by computer buffs to describe colors. The computer RGB scale numbers for cosmic spectrum green are 0.269, 0.388 and 0.342.

If you pass sunlight through a prism, it will stretch into a spectrum of colors from deep red to deep purple. Different light sources have slightly different spectra — an incandescent light will ...

This morning E Ink Holdings announced the availability of a new color-changing film known as Prism that’s based on the company’s electronic paper technology used in devices like Amazon’s ...

Besides low power consumption, the E Ink Prism 3 also allows designers to produce patterns and colors on their products. Plus, the thin and rugged design makes it ideal for surface displays.