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SMARTR - Math/Science Virtual Learning Experiences for Youth
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Although the bursts of rainbow colors in this photograph are mesmerizing, microbes fight for their lives in the background. Zach, a chemist, snapped this image of a salt sample he collected in a hot, arid valley near Death Valley National Park in California. He crushed the salt, placed it under a microscope slide and added a drop of water. Suddenly a slew of microbes came to life as the salt crystals dissolved. Then when the water started evaporating, he took a picture. The colors come from light passing through the growing crystals, which act like prisms.
Image credit: Michael P. Zach, Chemistry Department, University of Wisconsin-Stevens Point