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A simple trick to conserve laptop battery power
Authored by: RideMan on Dec 08, '05 06:04:52PM

It depends on how the polarizers are set. In a pocket calculator, you can invert the display by simply reversing the polarizing filter in front of the LCD

I got a reminder of this last week when I was servicing an LCD data projector and got one of the polarizers installed backward in the light engine...!

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