Don Gansauer wrote from Canton on Tuesday after watching the sun shining into a snow shower. "To form a rainbow, sunshine must be shining through a rainstorm," he said. "If the conditions were perfect, could one see a snowbow?" Sorry. Rainbows appear when sunlight is reflected off the rear surface of liquid raindrops and refracted, or split into colors. Solid snowflakes can't perform the same trick.
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