20 Fun Facts About Glass 1. Before man figured out how to craft glass, nature was already making it. When lightning strikes sand, the heat sometimes fuses the sand into long, slender glass tubes called fulgurites. The in - How Long - Document - PDFSEARCH.IO

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	20 Fun Facts About Glass 1. Before man figured out how to craft glass, nature was already making it. When lightning strikes sand, the heat sometimes fuses the sand into long, slender glass tubes called fulgurites. The in Add to Reading List Document Date: 2011-09-16 13:49:47 Open Document File Size: 418,95 KB Share Result on Facebook

20 Fun Facts About Glass 1. Before man figured out how to craft glass, nature was already making it. When lightning strikes sand, the heat sometimes fuses the sand into long, slender glass tubes called fulgurites. The inAdd to Reading List