#OnThisDay in 1940 #TheAtom debuted in #AllAmericanComics #19 #AlPratt 5’ 1” #CalvinCollege sophomore & eventual #physics professor #trainsAsAFighter turns #costumedAdventurer #1948SuperPowerReboot via #Cyclotron #tradesSackMaskForFinToppedHalfMask & #AtomicPunch begat #AtomSmasher #Damage