Pi Day

3/14 or March 14th, 2020 marks the Pi Day. However, the COVID-19 pandemic situation has limited celebrations across the world.

Pi

Pi (22/7 or 3.14) is an important mathematical constant used in a wide range of calculations. It is given as the ratio of the circumference of any circle to its diameter. It is also given as the area of a circle divided by the square of its radius.

About Pi Day

The idea for celebrating Pi Day was proposed by Larry Shaw, a physicist in Exploratorium Museum in San Francisco in 1988. The museum then launched the celebrations on March 14th at 1:59 (to correspond to 3.14159). March 14th is also the birth anniversary of Albert Einstein.

Tau Day

28th of June is observed as the Tau Day. 2π was proposed as an alternative for Pi as a circle constant by Bob Palais in 2001. This was named Tau and is approximately equal to 6.28. It is given by the ratio of a circle’s circumference to its radius.

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