ScienceThe LoomThe Jokes Physicists Tell About Chemists [Science Tattoo]ByCarl ZimmerPublished May 31, 2009• 2 min readShareTweetEmailDON'T MISS THE REST OF THIS STORY!Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.Sign Upfor your free account. Or get a Premium Subscription, just $19.SUBSCRIBE