Max Planck Pun T-Shirt

Sorry, Herr Planck, but your name was just too tempting for a certain someone. Are puns an affront against human dignity, or are they fun? It's a knotty question, definitely, so I'll just lumber on. I'm sure you're on board with me, because his scientific contribution, quantum theory, is constantly adding to our understanding of our world. By the way, Planck's full name: Max Karl Ernst Ludwig Planck. Now you know. You can make other products, too. Explore your options to create great gifts!