Not wishing to push this O/T thread more O/T but coming from England, and now in New Zealand, we have these sodium streetlights which I think are a pain in the neck. They have only two narrow spectra of yellow light and although they produce light it makes it hard, if not impossible, to make out colours. I wonder if they are being used in other members countries?
Steve 2010/1/31 Dave Martindale <[email protected]>: > If you care about accurate colour rendering, stick with incandescent, > preferably halogen. "White" LEDs are actually blue LEDs coated with a > phosphor that absorbs some of the blue light and emits approximately yellow > instead. If you look at the spectrum, you'll see a broad yellow peak and a > narrower blue peak. Your eyes see it as approximately white, but it's > deficient in red and green compared to a black body emitter like hot > tungsten. On the other hand, it's not as spiky as the output of > fluorescents. -- Steve Rooke - ZL3TUV & G8KVD A man with one clock knows what time it is; A man with two clocks is never quite sure. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
