#1230 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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#1229 What is a hedge fund?

What is a hedge fund? A hedge fund is a pool of money invested by private individuals. Their money has more power together than they each would have individually. The expression “hedge” fund came about in 1949 and the word “hedge” was used to imply that the fund was hedged against risk. That means that

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#1227 What is a Ponzi scheme?

What is a Ponzi scheme? It is a type of fraud where you use money invested by new people to pay profits to the people who are already invested. It was named after Charles Ponzi who certainly didn’t invent the scheme but who made it famous. (Incidentally, Ponzi scheme, scam, and con are all relatively

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#1224 Why does copper kill bacteria?

Why does copper kill bacteria? Copper can kill bacteria by pulling electrons away from the bacteria’s cell wall, breaking it. There are several materials and chemicals that are good at killing bacteria. Of all the metals, only copper, silver, and zinc can kill bacteria. Some plastics have been engineered to kill bacteria and there are

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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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