Science now says your phone's yellow tinted 'night mode' could be worse for your sleep

guest · Dec 18, 2019

Science now says your phone's yellow tinted 'night mode' could be worse for your sleep
December 17, 2019
https://www.androidpolice.com/2019/...ow-tinted-night-mode-is-worse-for-your-sleep/

n what should come as a surprise to no one, it turns out just making your smartphone's screen kind of yellow may not stop it from keeping you awake. In fact, according to a study out of the University of Manchester, that yellow-shifted "night light" is even worse for helping you get to sleep than just leaving your phone in the standard untinted mode.

On your phone's screen, you typically have three "subpixels" lighting each pixel of the display, in the colors red, green, and blue. The blue subpixel has the shortest wavelength, and so the "night mode" on your phone greatly reduces the brightness of that blue subpixel, or even turns it off entirely, making the screen appear much more yellow.
But according to UoM's new study, the marginal benefit provided by making the average wavelength of the light emitted by your phone's display longer (i.e., warmer) is probably outweighed by another factor related to the ways your eyes affect your biological clock.

Admittedly, they're fuzzy on the specifics around this, because this study wasn't conducted on a microbiological level. It's an observational study, with conclusions being drawn from mice who were exposed to different colors of light at identical brightness.
Click to expand...

The Guardian: Not such a bright idea: why your phone’s ‘night mode’ may be keeping you awake

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Science now says your phone's yellow tinted 'night mode' could be worse for your sleep

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