To do so, a star must apparently get so hot that a lot of gamma rays — the most energetic form of light — zip about within it. (sciencenewsforstudents.org)
The most preferred form of light therapy for patients is UV - B therapy. (thepsoriasisprogram.com)
Your baby doesn't need a night light or any other form of light gadget to sleep. (sleeptrainmybaby.com)