A call to improve London's lighting at night

Re:A call to improve London's lighting at night by colechristensen on Thursday March 18, 2021 @12:42PM (#26504565)

I'm happy sodium lamps are getting replaced, I'm not happy with the replacements which might be worse.

With LEDs it should be very possible to light streets with low temperature close-to-blackbody light. (I don't know if the proximity to a blackbody radiation distribution is the same as CRI etc.) Who wouldn't want this?

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Re:A call to improve London's lighting at night by ben_w on Thursday March 18, 2021 @04:11PM (#26507049)

LED light can be about as far as it’s possible to get from a blackbody spectrum, if similarly to that is what you care about (I don’t, art galleries do).

There are two ways of doing “white” with LEDs:

• Separate red, green, and blue, whose spectrum is spiky: https://en.wikipedia.org/wiki/Light-emitting_diode#/media/Fi...

• Phosphor, which may give you a spectrum like this: https://en.wikipedia.org/wiki/Light-emitting_diode#/media/Fi...

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