If you have an affinity for the mathematical constant π (pi), you will probably love to show off your love with this Pi By the Numbers Heat Change Mug.
Each Pi By the Numbers Heat Change Mug is covered with pi, to the 334 decimal places. When it’s cold, the mug displays 3.14, Pi’s commonly known shortened form. But when filled with hot liquid, pi majestically unfurls around the mug to 334 decimal places.
A great gift for mathematicians, physicists, astronauts, engineers and generally anyone who is interested in precision.
Exclusive from ThinkGeek.
Capacity: 12 oz.
Not microwave safe
Not dishwasher safe