Quote:
Originally Posted by rkomar
I would think that it depends on the "temperature" of the light. My ereader lights tend to be bluer than what you get from an incandescent bulb. It may also depend on how the ereader varies the brightness. At least some do it by chopping the light on and off, making the on intervals shorter to make it dimmer. There are definitely differences in the lighting, so it's possible that it has different effects on us.
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And some people are affected more by the change in light according to the seasons as well.