C. R. "Chuck" Downing
shared:
6/2/2017 2:05:06 AM
Reply#SciFact Chemiluminescence produces light through chemical excitation. https://t.co/iTiWJd2J9D @SherryFrazier pic.twitter.com/aH41boe5Qg
— C.R. Downing (@CRDowningAuthor) June 2, 2017