We’re pleased to announce two new **nerd shirts** inspired by mathematics, physics and grinning spheres.

The first shirt features a math joke:

“What’s an anagram for Banach-Tarski?”

“Banach-Tarski Banach-Tarski.”

It’s based on the Banach-Tarski Theorem, which states that a ball can be cut into a finite number of pieces, which can then be rigidly rearranged into two identical copies of the original ball – breaking physical conservation laws!

Incidentally, the Banach-Tarski Paradox is referenced in the Futurama episode Benderama, in which a character makes an overwhelming number of copies of himself.

You can **get the Banach-Tarski nerd shirts at our online store**.

The second new nerd shirt sports the slogan “Superconductivity is Irresistible.” The grinning sphere in this case is a superconducting material that’s cooled below its critical temperature, when the state of zero resistance is reached. Below this critical temperature, an applied magnetic field cannot penetrate the superconductor, a phenomenon known as the Meissner effect. We actually had some heated debate whether this shirt should instead say “Physics is Irresistible” (same diagram). We went with “Superconductivity,” but this design isn’t set in stone. At this time, our shirts are custom printed-to-order. This allows us flexibility in design and you can choose from a wide variety of shirt styles and colors.

The **Superconductivity nerd shirts are now available at our online store**.