IPhone Night Shift
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by Carley Folluo
In iOS 9.3, Apple introduced iPhone users to a feature known as "Night Shift." Night Shift alters the cool light of the iPhone to contain warmer hues, believing that the blue light prevents users from sleeping well at night. This feature can be analyzed by a Fiber Optic UV-Vis Spectrometer. The following experiment compares the resultant emission spectra from each lighting mode to magnified photos of the pixels on the screen. The screen resolution for the iPhone 6 used in this experiment is 326 ppi.