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. 2011 Nov 1;119(11):a472–a473. doi: 10.1289/ehp.119-a472

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graphic file with name ehp.119-a472.g001.jpg — The light from white-appearing LEDs consists of one strong, sharp peak of short-wavelength light in the range of 460 nm and a second, broader emission in the longer-wavelength part of the spectrum.

Ben Warfield and George Brainard/Thomas Jefferson University