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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The Great Blue Hole, Belize
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Scottish Blackface sheep, Aberdeenshire, Scotland
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Village of Zahara de la Sierra, Cadiz, Spain
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Today is World Refugee Day
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A Christmas market with a long history
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Freeloaders of the avian world
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A visit to Limerick on Limerick Day
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Methow Valley, North Cascades, Washington
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Shark Awareness Day
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World Oceans Day
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Siblings that play together…
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Wedded Rocks, Japan
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Shenandoah National Park, Virginia
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Paris is photo-ready this week
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We heart Berlin
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Bay Marker Lookout, Sydney Olympic Park, Australia
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Lei Day in Hawaii
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Under Parisian skies
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Penguin Awareness Day
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Do spirits haunt the Gardens of Versailles?
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Badlands National Parks 45th anniversary
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National Hug Day
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Amber Fort, Jaipur, Rajasthan, India
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Glendurgan Garden hedge maze is 186 years old
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On the Route of the Waterfalls
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Procida, Italy
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Sea Otter Awareness Week
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A wonderland in winter
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A winter light show
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The monsoon arrives in the desert
Bing Wallpaper Gallery

