“Faster than the streak of the lightning in the sky…Swifter than the speed of the light itself…Fleeter than the rapidity of thought…is The Flash.” That’s pretty fast. And it presents certain…problems. The Flash was born in 1940 with that opening declaration. Jay Garrick had a nifty metal helmet with wings on the side and he could run really really really fast. Not fast enough to propel sales of his comic book, however. He vanished in less than a decade. Fear not, speed fans! The … [Read more...] about Physics in a Flash