What is the formula for the area of a circle? What constant is universally used in mathematics around the world? Whose birthday is today who made good use of this constant during his career? OK. Give up?
Albert Einstein, born today, awhile ago. 3/14/15 or 3.1415. Pi or Greek letter pi. Mathematicians love the number on today's calendar. This day has been celebrated, officially in the USA when Congress named today PI Day, to celebrate mathematics and shine some light on the effort to improve student performance in math.
Einstein published his Theory of Relativity in 1916 after a few years perfecting the ideas that space and time cannot be separated, rather it is actually a space-time continuum. Had enough physics for the day? have some pi(e) instead.
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