General

#1234 How is a pope elected?

How is a pope elected? A pope is elected by the College of Cardinals and they need to get two-thirds of the vote to be elected. There have been approximately 266 popes so far. I say approximately because at some points there were two popes at the same time as different parts of the church […]

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#1227 How do trombones work?

How do trombones work? Trombones and all brass instruments use different methods, but they all make a variety of sounds by altering the length of the tube the air travels through. All wind instruments generally work on the same principle, although they have some major differences. The general idea is that you blow into one

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#1219 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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#1179 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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#1164 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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