Discover how ice crystals and winter skies create sundogs, sun pillars and halos — and when to look up from the Nature Center ...

How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...

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 ...

“Visible light is much gentler and can penetrate deeper, making it more suitable for real-world applications,” says Huaping Xu, a professor at Tsinghua University and one of the study’s corresponding ...

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 ...

For the past six years, the Danish-Icelandic artist Olafur Eliasson has been working with a color chemist to produce paint pigments that correspond to each nanometer of the visible light spectrum.

Light is more than what we see. The Sun sends out a number of waves of light in different wavelengths. Find out about wavelengths and the electromagnetic spectrum. Science Trek is available to stream ...

For years, scientists have fabricated small, high-quality lasers that generate red and blue light. However, the method they typically employ — injecting electric current into semiconductors — hasn’t ...

Scientists have made small red and blue lasers for years, but other colors have been a challenge. Researchers have filled an important technology gap by creating orange, yellow and green lasers tiny ...