Light in the mid-infrared (mid-IR) portion of the electromagnetic spectrum plays a key role in modern sensing. Because molecules interact with this kind of light in specific ways, researchers use technologies like mid-IR spectroscopy to identify biological materials,

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has partnered with CNN to drive awareness and education ...

Light therapy can be defined as exposure to daylight or specific wavelengths of light for a prescribed amount of time in order to treat seasonal affective disorder, acne, and a myriad of other conditions. Even though this type of treatment is generally ...

The light-year is an indispensable unit of measurement for anyone trying to understand outer space. Get a group of astronomers talking, and you’ll hear them say “light-years” about as often as you hear football fans mention “yards.” For ...

Light takes time to travel, which means any telescope powerful enough to see far enough away is also looking backward in time. One observatory now orbiting far from Earth has pushed that principle further than any instrument before it,

So white light is basically all the wavelengths put together. But what you do with research, research has shown that exposure to blue light can cause an increased amount of scattering. So increase, it can cause increased amount of scattering in our eyes.

A large review found some evidence for red light therapy, but the results aren’t exactly a hair-loss miracle.