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  2. Larry Shaw would lead the parade in his red cap with the digits of pi. Pi Day was recognized as a national holiday in 2009 and is internationally celebrated. 2015 was proclaimed by Shaw to be a special year, as it was written 3/14/15, and he called it the "Pi Day of the Century".

  3. Learn how former Exploratorium staff physicist Larry Shaw created Pi Day in 1988 and made it a national holiday in 2009. Discover how he linked March 14 (3.14) with the digits of pi (3.14159...) and celebrated Einstein's birthday.

  4. en.wikipedia.org › wiki › Pi_DayPi Day - Wikipedia

    Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (the 3rd month) since 3, 1, and 4 are the first three significant figures of π, and it was first celebrated in the United States. It was founded in 1988 by Larry Shaw, an employee of the San Francisco science museum, the Exploratorium.

  5. www.history.com › news › where-did-pi-day-come-fromWhat Is Pi Day? | HISTORY

    Mar 11, 2017 · Pi Day is an annual event on March 14 that honors the mathematical constant pi, which represents the ratio of a circle's circumference to its diameter. Learn how physicist Larry Shaw founded Pi Day in 1988 and how it is celebrated with pie-eating contests, math activities and more.

  6. Mar 14, 2022 · The holiday was founded by physicist Larry Shaw, who had been an employee of the museum for more than 15 years. Larry Shaw, the founder of Pi Day, leads a circular procession during Pi Day at the ...

    • Mary Kekatos
    • 2 min
  7. Mar 13, 2024 · Pi Day is a national holiday on March 14 that celebrates the ratio of the circumference of a circle, 3.14 (π). Learn how physicist Larry Shaw started the tradition, which scientists were born on Pi Day and where to find food discounts.

  8. Jan 30, 2019 · 592 views 5 years ago. Former Exploratorium physicist Larry Shaw founded Pi Day at the Exploratorium in 1988, and in 2009 Pi Day became a national holiday. Join the Exploratorium on...

    • Jan 30, 2019
    • 592
    • Exploratorium
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