What a coincidence! Three days into National Chemistry Week, we dive further into STEM education to celebrate Mole Day. We’re not toasting the burrowing animal, but the unit of measurement (mole) used primarily in chemistry and molecular science studies. We don’t know how many moles of liquid nitrogen are in this photo, but we do like the dynamic look of the super-cooled element, which in liquid form can resemble boiling water. We hope this photo doesn’t depict liquid nitrogen after somebody in the lab dropped their keys into the vat. At minus 320 degrees Fahrenheit, liquid nitrogen tends to flash-freeze anything immersed in it.
Of moles and liquid nitrogen
Today in History
More Desktop Wallpapers:
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Swim city
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From the mind of Frank Gehry
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Vinh Hy Bay, Vietnam
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Winter in the Wild West
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Boating on the Bojo
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International Day for Monuments and Sites
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Ready, set, read
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The Aomori Nebuta Festival parade, Japan
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Hay bales in North Yorkshire, England
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Arbor Day
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World Rainforest Day
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Natural Bridges State Beach in Santa Cruz, California
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National Park Week: Canyonlands National Park, Utah
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World Art Day
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Channel Country, Australia
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Barcelona bids farewell to summer
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A valley view at 9,000 feet
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National Fossil Day
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Forward-thinking women of history
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The glowing waters of the Matsu Islands
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Take the Stairs Day
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World Penguin Day
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A triumph of light
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A century since Tut s tomb was discovered
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Fallen but not forgotten
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Where the wildflowers grow
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Little Pigeon River, Great Smoky Mountains, Tennessee
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Craters of the Moon centennial
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And the skies filled with bats…
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Independence Day
Bing Wallpaper Gallery

