I recently purchased a computer and noticed that some PC info (CPU temperature and fan speed) was displayed on a small display window on the front of my PC unit. Here's the interesting thing. From my chair and I read the text (dark blue on a ligher blue background) without using my reading glasses. OK not a big deal, but if I put my business card (black text on a white background) next to the display (at arms length), the text on my card is very very blurred, yet the text on the PC mini-display is perfectly clear. Why is this?
The answer to why people find that a blue background reduces eye-strain, could be revealed in the observation that with a white background the eye (iris muscles?) have a hard time to focus the lettering, whereas with a blue bkgrd they do not.
Comments please.
