Lasers, LEDs and light sources are devices that create light. LEDs (light emitting diodes) convert an electrical current into light using spontaneous emission in optically active semiconductors.

As time passes, the visual information that illustrates our memories fades away, Boston College researchers report Like old photographs, memories fade in quality over time – a surprising finding for a ...

The Golden State Warriors are one of the most successful teams of the 21st century. They have four championships with Steve Kerr as the head coach and Stephen Curry as the superstar. Of course, they ...

For more than a generation, a bachelor's diploma functioned as the default ticket into the middle class. That bargain is breaking down. Employers are rewriting job descriptions, graduates are ...