Night Shift: How blue light impacts sleep, and what companies like Apple can do about it

With iOS 9.3, Apple added a new display mode meant to reduce the amount of sleep-harming blue light its displays kick out. Technical analysis shows that the company succeeded, but the long-term impact on a user's quality of sleep is still unknown.

from ExtremeTechExtremeTech http://www.extremetech.com/extreme/226127-night-shift-how-blue-light-impacts-sleep-and-what-companies-like-apple-can-do-about-it