Dear Alm& Alex:
--I appreciate hearing from folks who not only read Advanced Materials, but know what they are talking about. My understanding of LEDs, light, efficiency, frequency and color temperature are at a beginners level. That is why I posted the article. To paraphrase Fred Allen I guess you could say that my under standing of this subject could be placed "in a gnats navel and still have room for two caraway seeds and the heart of an agent." Or as Enrico Fermi once said: "Before I came here I was confused about this subject. Having listened to your lecture I am still confused. But on a higher level"
--I will ponder all that you have said, and when I understand enough to ask an intelligent question, I will endeavor to do so.
"I could see that, if not actually disgruntled, he was far from being gruntled."
P. G. Wodehouse 1881 1975
Best Regards
Clear Ether