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Old 01-06-2015, 07:56 PM   #3
krazy4katz
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Device: [Kindle 1, Kindle 3 (KK)], Kindle Voyage, iPad Pro
White light probably has blue in it, but without knowing the exact wavelength and how much, it is difficult to tell if it will affect melatonin production. I don't know if any studies have been done in humans that would answer that question.

Although the device is front lit, you must absorb the light, otherwise you couldn't read on it (at night).
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