You may know that light happens on a spectrum and contains several different colored waves, each of which can produce ...

Apple’s latest earbuds are equipped with photoplethysmography (PPG) sensors that shine infrared light hundreds of times per second to measure how light is ... In addition to workout apps, you can also ...

A surprising therapy is showing promise for chronic pain, vision loss, and muscle recovery, among other conditions. It's not a pill, an injection, or surgery. It's light. Yes, light. The thing that ...

"Astronomers have been studying the heavens for thousands of years, but until recently much of the cosmos has been invisible to the human eye. Launched in 2003, the Spitzer Space Telescope has brought ...