Portland, Ore. – Researchers at Sandia National Laboratories (Albuquerque, N.M.) have blended quantum dots with an LED to produce a solid-state white-emitting device that does not depend on phosphors ...
Light can be produced and/or controlled electronically in a number of ways. Among the widely used of all the different types of semiconductor diodes are the Light Emitting Diodes or LEDs. It is a PN ...
Share on Pinterest New research examines the effects of different types of screen light on sleep. Cavan Images/Getty Images Researchers have shown that exposure to certain types of light before sleep ...
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