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#1222 What is Prince Rupert’s drop?

What is Prince Rupert’s drop? Prince Rupert’s drop is a small, tadpole-shaped glass bead that is incredibly strong but incredibly fragile. Prince Rupert’s drops have been around for a long time and there is some thought that they were first discovered by Roman glassmakers two thousand years ago. They were first brought to Great Britain […]

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#1181 What is the difference between coal, coke, and charcoal?

What is the difference between coal, coke, and charcoal? Charcoal is made from wood, but coal and charcoal are both sedimentary rocks that are processed differently to produce different results. Charcoal, coal, and coke all have different advantages, disadvantages, and uses. Let’s look at them one by one. Charcoal is made from wood. If you

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#1166 What is a salt road?

What is a salt road? A salt road is a road that was used in ancient times to transport salt from where it was produced to where it was needed. We don’t think about salt so much these days. Maybe if our meal is a bit bland we might reach for the salt cellar and

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