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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Happy Thanksgiving!
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The Aomori Nebuta Festival parade, Japan
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Black History Month
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An uncommon look at an American icon
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A ‘circus of chaos’ for Stravinsky
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World Jellyfish Day
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‘Think equal, build smart, innovate for change’
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Rideau Canal Skateway in Ottawa, Canada
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Engineering an artificial harbor in Normandy
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We heart Berlin
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Gamboa Crater, Mars
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Aw shucks, It s Oyster Day
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Winter solstice
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One for the books
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Patriot Day
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You won’t see this on Mulberry Street
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Lunar eclipse
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Join the parade for World Elephant Day
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Flamenco dancers
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National Pearl Harbor Remembrance Day
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A dying breed of tree thrives in an American park
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Don t go chasing waterfalls
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A water loch-ed castle
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Here, fishy!
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World Turtle Day
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World Children s Day
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Tree of many colors
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Space is for everyone
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Fall color sweeps across the West
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Take the stairs