Here
scienceline.ucsb.edu/ge…
Blue absorbs anything not blue
optics.org/news/12/4/17
DEWs are said to be blue to get thru the atmosphere best.
http://scienceline.ucsb.edu/getkey.php?key=4432
https://optics.org/news/12/4/17
Here
http://scienceline.ucsb.edu/getkey.php?key=4432
Blue absorbs anything not blue
https://optics.org/news/12/4/17
DEWs are said to be blue to get thru the atmosphere best.