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hyttioaoayesterday at 6:55 PM1 replyview on HN

My two most favorite and most seldomly seen colors are near uv. One of them is a blue sky at an altitude of over 3000m. The other was a powerful deep blue laser in a microscopy lab, just on the end of the visible spectrum


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m3047yesterday at 7:13 PM

One of the things which is unaccounted for in both printing and lighting is florescence.