By Arpita Aneja
You might have heard that researchers, two Japanese and one American, recently won the Nobel Prize for Physics for inventing blue light-emitting diodes (LEDs), but you might not know what LEDs are and why they’re important. With energy-saving light bulbs becoming more commonplace and smartphone use as widespread as ever, there might be more LEDs in your life than you realize.
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Write to Arpita Aneja at arpita.aneja@time.com