Computer Screen Makes Contemporary Fretful
I maging when staring at some kind of active lamp-house, you may feel fretful after minutes, but
feel more serene at passive light objects when the brightness on them is not overly strong - so you seldom read books directly under fierce sunshine, instead you will find some shady place reading.
Computer screens's both CRT and LCD's are active light-emitters, when reading texts on their surface, how could you not be fretful? Let's take an experiment: read an identical philosophy paragraph text both on screen and in book, as soon as you concentrate attention on the complicated texts, screen will make you very fretful no more than 1 minute; but you can read and try to understand them in the book with much more sedation at least up to 5 minutes( if being familiar with philosophy area, you can even persist reading them over 10 hours in book, and this duration is impossible when on screen reading the obscure texts.)
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