The fragile truce between science and art came under strain on Wednesday when common depictions of snowflakes threatened to divide the two cultures over the festive season.
In the latest salvo between the warring factions, Christmas card manufacturers, advertising agencies and children’s book publishers are accused of corrupting nature with “incorrect designer versions” of snowflakes that defy the laws of physics.
A letter to the prestigious journal Nature calls on scientists to take a stand against all images of four, five and eight-sided “faux” snowflakes.
Thomas Koop, who specializes in ice crystal formation at the University of Bielefled in Germany, had turned a blind eye to the depiction of unnatural snowflakes until he noticed an octagonal one on Nature’s own marketing Web site, captioned “for anyone who loves science.”
Koop decided to make his frustration known.
“It bugs me,” Koop said. “It’s the molecular building blocks that shape these crystals and they can’t form any shape other than a hexagon.”
In a letter to Nature, Koop points out the hexagonal shape of snowflakes has been known for at least 400 years when Johannes Kepler, the German astronomer, published his treatise on the subject, On the six-cornered snowflake.
“Beautiful photographs abound, including those taken by Vermont farmer Wilson A Bentley starting in 1885 ... Why then do many artists invent their own physically unrealistic snow crystals?” Koop wrote.
Snowflakes — or more accurately snow crystals — are famously unique, though Koop admits scientists cannot prove that no two alike have ever fallen to Earth. As different as they are, all have sixfold hexagonal symmetry. Snowflakes can be single crystals or larger agglomerations.
Poor understanding of how snowflakes form means we are now knee-deep in fake flakes, Koop laments.
“The grand diversity of naturally occurring snow crystals is commonly corrupted by incorrect ‘designer’ versions,” he wrote in his letter.
Snow crystals form when water vapor condenses into solid ice. Depending on the temperature and relative humidity, the ice crystal will grow into a hexagonal rod, a solid, flat plate, or a spectacular branched crystal. The symmetrical shape comes from the water molecules’ hexagonal crystal lattice.
“We who enjoy both science and captivating design should aim to melt away all four, five and eight-cornered snow crystals from cards, children’s books and advertisements, by enlightening those who unwittingly generate and distribute them,” Koop wrote.
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