It’s Pi Day, the day we celebrate the mathematical constant π. This day was chosen since today’s date expressed numerically (in US format) matches the number’s first digits, 3.14. Pi represents the ratio of a circle’s circumference to its diameter. It can be used to compute the area and circumference of a circle, such as the crop patterns we"re looking at here in Colorado. (Who said math wasn"t useful in the real world?) Many towns, schools, and museums mark the day with festivities based around mathematics and, of course, serving pie. We can’t think of a more delicious way to study geometry.
Rocky mountain pi
Today in History
More Desktop Wallpapers:
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In Texas, even the riverbend is big
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A Welsh wonder turns 70
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Rice terraces of Mù Cang Chải, Yên Bái province, Vietnam
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Ölüdeniz, Turkey
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Cuban tody, Alejandro de Humboldt National Park, Cuba
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A picture-perfect day on Trillium
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Beautiful baobabs
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The circular castle of Cornwall
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Marseille welcomes the Olympic torch
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Happy Pi Day!
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Step into the dark
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Flooded crypt, Basilica of San Francesco, Ravenna, Italy
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Okefenokee Swamp
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Old Town Quito
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Golden Gate Bridge, San Francisco
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Negratín Reservoir, Granada, Spain
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Happy St. Patricks Day!
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Isla del Pescado on the Salar de Uyuni in Bolivia
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Ancient art in the Amazon
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Southern right whales sail home to South Africa
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Happy Thanksgiving from an expert face-stuffer
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An inland ocean
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On the lookout for Sheep-Cote Clod
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Happy Birthday, Eiffel Tower
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Here there be dragons
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Autumn comes to the Porcupines
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Castle Day Japan
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Happy Halloween!
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Halo around the sun
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Avatars of the Wolf Moon
Bing Wallpaper Gallery

