On a lovely Saturday in the lab (my music playing, no one else around), I dropped a Dewar flask from a shelf onto the lab bench. Along with the pop that announced its destruction, I saw that my finger was bleeding. My adviser brushed off my protestations that I was fine with “[CJ], you’re bleeding all over the floor.” He was right and off I went to the campus health center.
It’s been at least 6 years since I’ve had the scar. It’s healed, but left the interesting black mark that you see and a lump that I suspect may be embedded glass. But when I think about chemistry and potential dangers that I could face, all I have to do is look down at my hands.
UPDATE: The Curious Chemistry Grad Student shows off a couple nice burns.