**Update: **The Pi *heat change* mug may not be available anymore but be sure to check out the Pi t-shirts on the Shirt List.

You don’t need to be a mathematician to appreciate this Pi *heat change* mug but of course, if you are a mathematician you might appreciate it more. It was sold by ThinkGeek but they don’t seem to have it anymore. Each Pi By the Numbers Heat Change Mug is covered in Pi. When it’s cold, the mug displays Pi’s nickname: 3.14. But when you fill that same mug with hot caffeinated* liquid, Pi majestically unfurls around it to 334 decimal places. The name by which mathematicians and physicists and astronauts and engineers and generally people interested in precision know Pi.

**Product Specifications **

- Pi By the Numbers Heat Change Mug
- A ThinkGeek exclusive
- Displays 3.14 when cold
- When filled with hot liquid, Pi unfurls around the mug to 334 decimal places
- Capacity: 12 oz.
- Materials: Ceramic
- Not microwave safe
- Not dishwasher safe

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