LEDs are small but powerful components that light up everything from phone screens to flashlights. In this video, you'll learn how a tiny chip inside an LED converts electrical energy into light using ...

Although the Ursids are active from Dec. 13 through Dec. 26, the peak night coincides with the winter solstice, which occurs at 10:03 a.m. EST on Dec. 21. Though the two events are totally unrelated, ...