Abstract
ANYONE dropping very hot glass tubing into cold water expects it to shatter. However, one does not expect it to shatter in a simple geometric pattern such as a spiral. I was surprised to observe such fracture, and to find that the spiral pattern is a preferred one. (The experiments were limited to ‘Pyrex’ glass, since soda glass was not available.)
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HOPFIELD, J. Spiral Cracks in Glass Tubes. Nature 158, 582–583 (1946). https://doi.org/10.1038/158582c0
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DOI: https://doi.org/10.1038/158582c0
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