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Pi By the Numbers Heat Change Mug

Hi, Pi!

  • Displays 3.14 when cold
  • When filled with hot liquid, Pi unfurls around the mug to 334 decimal places
  • A ThinkGeek exclusive
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Hi, Pi!

There are two things we can't live without: math and caffeine. What better way to celebrate both loves than a mug surrounded by Pi? The same mug full of caffeinated brew, that's what. How about if we supply the mug, and you supply the caffeine?

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. 

* We haven't tested so we're not sure if the caffeine is required, but we figure you're better off not leaving it to chance.

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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Have questions about Pi By the Numbers Heat Change Mug or your order? We monitor these comments daily, but it may be faster to email us directly or call us at 1-888-GEEKSTUFF.

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