They say the only constant in life is change. In mathematics, however, there are many constants and today, we"re celebrating perhaps the most famous of them all: pi. This tasty-sounding constant is the ratio of a circle"s circumference to its diameter, approximately 3.14159. Every March 14, mathematics fans across the world get baking to mark Pi Day—a celebration of both the mathematical constant π and its delicious homophone, pie. It began in 1988, when physicist Larry Shaw connected the date (3/14) with the first three digits of this constant. Today, mathematicians and enthusiasts celebrate Pi Day with pie eating and pi reciting. Did you know that when your clock strikes 1:59 today, you will be three decimal places closer to the real value of pi? Pi is everywhere, even in nature. Pictured here is a bodhi tree in the shape of the pi symbol at Wat Phra Ngam, a temple in Ayutthaya, Thailand. Whether you"re a math geek or just in it for the treats, Pi Day is for everyone to enjoy!
Happy Pi Day!
Today in History
More Desktop Wallpapers:
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Maritime forest in Cumberland Island National Seashore, Georgia, United States
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Squirrel Appreciation Day
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Behold the architectural marvel
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European hedgehog, France
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Wintry Swiss bliss
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Natural Bridges National Monument, Utah, United States
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A shiver of sharks on the hunt
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Castell Coch, Wales
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World Meteorological Day
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An ocean of stars above the desert
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Firefall at Yosemite
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Who uses this grassy bridge?
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Burrowing owl chicks
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Pearl among the emeralds
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Festival fever
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St James Tidal Pool, Cape Town, South Africa
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The summer opening of Buckingham Palace
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Sequoias of the sea
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A touch of magic
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Black bear cub emerges into spring
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A day for giving
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Gollinger Waterfalls, Salzburg, Austria
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Tower Bridge, London
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Man-made, meandering Lake Powell
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Celebrating Charles Darwin
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Maldives
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Pushkar Camel Fair
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We can all just get along
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Winnie the Pooh Day
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Celebrating our looming lunar neighbour
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