Quote:
Originally Posted by astra
The question is why?
I believe any conventional light bulbs flicker with the speed electrical current is coursing through it (like 50 times per second?). We do not noticing the flickering but it flickers and that's what tires our eyes.
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No. An incandescent light bulb does not flicker either. The tungsten filament gets heated up and--without going into too much detail--starts emitting photons. While there is
some cool-down in the filament during each half-cycle of the sinusoidal waveform, the filaments reaction is way to slow to exhibit any noticeable flicker on a 50/60 Hz current.
Quote:
Originally Posted by BobVA
So, all this would allow me to restate what Valloric said as "For all practical purposes, the backlight doesn't flicker"  |
I call 50 KILOhertz no flicker. We can debate the academic if you want
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Quote:
Originally Posted by nekokami
One factor might be that with LCD, we don't generally remember to adjust the brightness in comparison to the ambient light of the room, so perhaps we end up with too much contrast between the two. Or many people may leave LCD screens turned up too bright most of the time, so that they are in fact brighter than a well-lit printed or e ink page.
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Yup. People buy an LCD screen, turn it on, and leave it at the default of 300 cd/m^2. You might as well save yourself the time and just poke a red-hot knife into your eye.
Quote:
Originally Posted by nekokami
But the eye can't tell whether the photons are coming from the front of the display and bouncing off or coming from the back of the display and passing through.
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This is debatable. Are we going into particle physics? Just open the door, I'll be right there.