4 ms·

I setup a shortcut on my iPhone. When I triple tap the home button, my screen becomes dimmer than the dimmest setting on a MBP. If I triple tap again, it return

• jedberg 11y ago
  That adjusts brightness, not color temperature. Color temperature is what changes your circadian rhythm and prevents proper sleep.
  • burke 11y ago
    I haven't read any research on this, but this feels incorrect. If this is true, staring at red-tinged floodlight should do less to keep you awake than looking at a blue LED with masking tape over it. It feels more likely that this is related to excitation of S cones -- which dimming the screen without changing the colour temperature would also accomplish, to a degree.
    • Domenic_S 11y ago
      Gettin' awful feelsy in here. No need to feel, they aggregated a bunch of the research here: https://justgetflux.com/research.html https://justgetflux.com/research.html
      • burke 11y ago
        So according to that (or a quick skim thereof), it's not the overall colour temperature, but the intensity of absorbed light in the ~480nm range. In other words, dimming the screen should be at least somewhat effective.
• mrks_ 11y ago
  I found that this made double clicking lag, since it waited for a third click to register.