Not all light is created
equal. Fluorescent lamps generate a lot of light and little heat, but their blue glare can be harsh. Incandescent light is softer, with a hue that can shift from yellow toward red. But LEDs are special because they generate light without the need for a lot of energy. It was for that reason that the 2014 Nobel Prize in Physics went to the three scientists “for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white light sources.”
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