“Crystallizing Epsom Salts”

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Candy-colored crystals emerge from a salty liquid in this macro video of Epsom salt crystallization by Karl Gaff. The video was an honorable mention in the 2022 edition of the Nikon Small World in Motion competition. The wild colors in the video come from illumination with polarized light, which makes the crystals appear different colors depending on the orientation of their atoms. (Image and video credit: K. Gaff; via 2022 Nikon Small World in Motion Competition)

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