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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Everyone s watching the Perseids
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A spectacle unlike any other
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Methoni Castle, Messenia, Greece
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Clark Range, Yosemite National Park, California
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Life carries on, rising from a ship s skeleton
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International Tea Day
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Up in the Highlands
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Unearthing a queen s lost tale
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Lupine fields, Snæfellsnes, Iceland
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Reflecting on Black History Month
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Travel Sunday: Liverpool
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Casting a vote for women s history
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It s Census Day—make it count
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Hiding in plain sight
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Roques de Benet, Els Ports Natural Park, Catalonia, Spain
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It s Independence Day in Mexico
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Tigh Mor Trossachs on Loch Achray, Scotland
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Rising up from the black sand like rock gods
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Taking the forest to the cloud
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Alam-Pedja Nature Reserve, Estonia
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Happy Easter!
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Happy Thanksgiving from an expert face-stuffer
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An icy extravaganza
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Wild lupines
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The Door County Coastal Byway in Wisconsin
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Hues of Hokkaido
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European beech forest, Belgium
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We did not invent this, honest
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Misool, Raja Ampat Islands, Indonesia
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A hint of spring
Bing Wallpaper Gallery

