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
More Desktop Wallpapers:
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Spring comes to Glacier National Park
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The Crown Jewel of the North Atlantic
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Monarch butterflies migrate south
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It s Coffee Day
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Boxing Day—a shopper’s delight
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The largest living organism on Earth
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An aviation celebration
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Happy Presidents Day
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A bridge of Madison County
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‘The memory of Abraham Lincoln is enshrined forever’
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Lanterns alight in Pingxi
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Construction workers resting above Manhattan
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And the skies filled with bats…
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A night of art and culture
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League of Nations, 100 years later
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Fighting evil with costumes
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Cheers! It’s National Wine Day
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It s a ruff life