Spiral Cracks in Glass Tubes
Spiral Cracks in Glass Tubes
复制标题
玻璃管中的螺旋裂纹
作者：
J. Hopfield
任何人如果把非常热的玻璃管掉进冷水里，都可能会碎掉。然而，人们并不指望它会以简单的几何图案(如螺旋线)破碎。我惊讶地观察到这样的骨折，并发现螺旋形是首选的一种。(因为没有苏打玻璃，所以实验仅限于‘PYREX’玻璃。)
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.)