|06 Nov 2009||#6|
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Well, if you drop the refresh rate too low you get to the point where you can (kind of) actually see the refresh cycle - it's the 'kind of' that causes the trouble; you're so nearly able to separate the data into discrete frames that your brain continues to try to do so. After a while that can cause headache and eyestrain. British TVs refresh at about 50Hz (50 frames (sub-frames actually) per second), US TVs at 60Hz. These are generally felt to be about as low as you want to go, and most new LCD or Plasma Tvs refresh - or are capable of refreshing - at 100Hz (ie so-called 'flicker-free' viewing. Panasonic in particular are very big on this in their advertising for their new Neo-PDP Plasmas)
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