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A colour filter, plastic or gel, shaped so as to fit over tungsten. tungsten-halogen, or low energy fluorescent lamps, changing the spectral emission so as to simulate the effect of having installed low energy multi-LED lamps, but without the trouble and expense.
Produces a dim, shadowy light that
doesn't render colours properly, makes it difficult to read, and eventually causes blinding headaches.
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Annotation:
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don't complain too much. It was a near thing that filament lighting won out over florescent. |
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Properly designed LED lights produce bright, full spectral light. Stop buying the cheap ones. |
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I heard that about HID too, how a good HID system wouldn't blind other drivers and would provide bright glare free light. Easy to say. |
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