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A comment on Night Shift Mode in macOS Sierra 10.12.4. Parent comment

Re:Night Shift Mode in macOS Sierra 10.12.4 by dzhiurgis on Wednesday January 25, 2017 @07:36AM (#13480885)
Ganglion cells[0] are sensitive to blue light and produce melatonin, one of the few sleep regulating hormones.

[0] https://en.wikipedia.org/wiki/Intrinsically_photosensitive_r... nal_ganglion_cells

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