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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Sparkling ice diamonds on a black sandy beach
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Poppies for Armistice Day
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Lake Peipus, Estonia
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Travel Sunday: Flamenco in Granada, Andalusia, Spain
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All hail the king of shrubs
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Riding the bore tide at Turnagain Arm, Cook Inlet, Alaska
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St. James Tidal Pool, Cape Town, South Africa
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A sleeping green giant
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Victory Day in Valletta
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World Honey Bee Day
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It s fair season
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Pollinator Week
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Super sandy Sweet 16
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Blue paradise on the Costa Brava
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It s Tolkien Reading Day
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Playa del Silencio, Spain
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Skyscraper Day
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Storseisundet Bridge, Norway
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Santorini, Greece
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Celebrating 30 years of eye-opening images
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Kirkilai lakes, Biržai Regional Park, Lithuania
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World Reef Awareness Day
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Hanging out on a limb
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Tiny fliers head south
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Negratín Reservoir, Granada, Spain
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National Trails Day
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Let s run em up!
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Val Gardena, South Tyrol, Dolomites, Italy
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Channel Country, Australia
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Behold the blood moon