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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Red fox in the Netherlands
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International Day for Biodiversity
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Mardi Gras flower power
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A red fox on the Swiss side of the Jura Mountain range
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Spring equinox
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Grand Canyon National Park turns 105
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National Take a Hike Day
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Oh, to sleep under the northern lights
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Patriot Day
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It s Computer Science Education Week
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A place called ‘Peace’ in India
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Hawaii Volcanoes National Park turns 103
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It s a good day to be green
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Penguin Awareness Day
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Congratulations, 2019 Nobel Prize laureates!
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Quilts as high art
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Lower Antelope Canyon, Arizona
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World Maritime Day
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A predator at risk
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Happy Fathers Day!
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Diving into World Oceans Day
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Behold the blood moon
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Dog days of summer
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‘The mountains are calling’
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The Cutty Sark turns 150
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Blue linckia sea stars in Papua New Guinea
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World Teachers Day
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Instant romance
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Pascua Florida Day
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Okefenokee Swamp