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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Vieste, Apulia, Italy
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Autumn in the Prosecco Hills
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Detroit Industry Murals by Diego Rivera
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Dog days of summer
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National Trails Day
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Manhattan
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Russell lupines, Lake Tekapo, New Zealand
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A holiday beacon of light
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Looking back at Yellowstone, 30 years after the fires
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World Teachers Day
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Behold the mighty Aldeyjarfoss
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A tower of light
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Nature Photography Day
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National Park Service anniversary
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Struck by Southwestern beauty
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Desert rose of Qatar
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From garden to table?
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Bioluminescence at Trwyn Du Lighthouse in Wales
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High seas commerce
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Grand Staircase-Escalante National Monument, Utah
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Longs Peak, Rocky Mountain National Park
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National Park Week: Yosemite National Park, California
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National Napping Day
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Hey, don t you guys have somewhere to be?
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Hey, you two in the front!
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The Feathers at Frenchman Coulee near Vantage, Washington
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A path to access
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Anza-Borrego Desert State Park, California
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Mountain mists over Bavaria
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Galeries Lafayette, Paris