Quote:
Originally Posted by HarryT
Perhaps, but no Kindle has a backlight, of course, and frontlighting is no different to any other external light falling on the screen.
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This is off topic from the OP’s question, but thanks for your comment! That sent me on a search to learn more - something I should have done earlier. So now I know the Paperwhite is sidelit, not backlit.
Concerns about sleep disruption are tied to blue light, which can interfere with melatonin production. The white light from the Kindle’s LEDs do include blue light. However, exposure is significantly less than from tvs & computer screens, etc.
Just how disruptive Kindles actually are was hard to pin down. I found lots of contradictory hearsay and few primary sources. I’ll keep looking, but in the meatime, thanks for setting me straight.