Most visible light, like sunlight, is composed of all the colors of the rainbow: red, orange, yellow, green, blue, indigo and violet. These colors make up the visible light spectrum, which is easy ...

Netgear Orbi Voice: ... It's clever how the ring of light around the top of the Orbi Voice mimics the light on an Amazon Echo while also changing colors like an Orbi Wi-Fi satellite station.

Eclipses change the light around us, leading to unusual sights. Monday's solar eclipse also brings a chance to see crescent shapes in shadows and pinholes, as the moon moves in front of the sun.

It's not easy being green. Scientists for years have made small red and blue lasers, but other colors, including green, have been a challenge. A team has now filled this technology gap by creating ...