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Re:Some cities are taking another look at LED lighting after... by misnome on Sunday September 25, 2016 @11:59AM (#12575849)
What exactly is "unseen blue light"?
Re:Some cities are taking another look at LED lighting after... by jackyinger on Sunday September 25, 2016 @12:15PM (#12575919)
I think they mean that there is a lot of blue light emitted, but it is not super obvious because they emit longer wavelength light as well (reds & greens).
Re:Some cities are taking another look at LED lighting after... by betaby on Sunday September 25, 2016 @12:14PM (#12575913)
It's perfectly "seen". LED without filter has blue spike in spectrum. http://www.ledsmagazine.com/content/dam/leds/PrintArticles/v...