Is Glass a Liquid?

By jamie

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7. Fulgurites

As mentioned, glass is made from sand and it requires a great deal of heat to make the transformation from sand to glass. This is a process that can occur naturally thanks to the power of lightning. A lightning strike will have a temperature of more than 3,000 degrees.

When a bolt of lightning strikes sand, it causes the sand grains to fuse together and will create what is known as a fulgurite. Sand fulgurites are usually very fragile and don’t have any transparency but they can sometimes be quite beautiful. Fulgurites can also be found in solid rock, but these are rarer and harder to access.

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