Quote:
Originally Posted by repods
well I don't know but I verified it every time...
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This sounds highly improbable.
Try a blind test. Ask your spouse or somebody to toss a coin and depending on the output place an e-ink reader or a decoy into a cardbord box (or a paper bag, or wrap in a piece of cloth) and place it next to your bed. Let them make a [secret] record and you keep the records as well for 20 days. Then compare the nights you could sleep and nights you couldn't with the records of the real thing or the decoy placed next to your bed.
Even better, make a double blind test. Take two identical boxes and place reader into one and dummy with the same weight to the next. Then leave the room and ask your spouse to toss a coin and place one randomly selected box next to your bed and other to next room. Let the spouse record what was in the box next morning (without telling you!). After many days compare records. This is the only way to verify your theory.
Next you proceed with blind experiments with a reader that is switched on/off randomly, with or without battery. You can also experiment by placing the device into a box made from ferromagnetic material (steel), you can experiment with the distance to your bed - try sleeping with the device next to your bed, then 1m distance, 2m distance ...
There are lots of things you can try.
As an engineer that works with electronics, among many other things, I do not think that there is anything in an e-ink display technology that could cause sleeplessness even for the most sensitive person. The above suggested experiments are supposed to prove that there are other factors that cause your problems with sleep.
I personally sleep with an e-ink device next to my head for the last five years. But, when I was a lad I used to sleep in a room with a dozen running old mechanical clocks. I have designed and [re-]built some of them. I can also sleep with the light on, so I might not be an ideal person for comparison ;-)