Quote:
Originally Posted by ottischwenk
The difference is in transmitted light versus reflected light.
In the first case, you look directly into the light source, but not in the second case.
It is a completely different light quality.
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A photon arriving at your retina that originated in a backlight LED is indistinguishable from the one that originated in a LED reading lamp and was reflected to your eye from an e-ink display.
The only difference is the level of ambient light and perhaps the frequency in which the light changes its intensity. Not the frequency of light wave itself - this is what color is, but the refresh frequency of display or perhaps frequency of the PWM regulator of display brightness.
Please note that in earlier post I stated that I vastly prefer reading fiction from an e-ink display (where I keep front-light level at a steady 1% - the lowest setting). I have read on LCD screens for years before e-ink devices became available, because I wanted to read in English and I had limited access to paper books in English here.
I work with computers almost whole day long and when I come home I might spend several hours in front of two monitors reading Mobileread, Reddit, watching Youtube, gathering info for my hobbies, helping kids with homework ...