You Asked: What are the insides of an electric guitar and how do they work? — Chirs, Front Royal, Virginia Marshall Answered: The important part of an electric guitar is called the pickup. It contains a magnet wrapped by many coils of thin copper wire. When a metal string vibrates over the pickup, it creates [...]

You Asked: How do drug tests work? — Robert, Clinton, Missouri Marshall Answered: Most drug tests work by detecting a chemical signature in the urine (although it is important to note that alcohol is a drug, and it is often detected with breath tests). A marijuana test is a typical drug test that an employer [...]

You Asked: Why does synthetic testosterone make muscles bigger? — Ken, Metarie Louisiana Marshall Answered: Testosterone is a hormone. That means that it is a molecule with a specific shape that triggers certain behaviors in certain cells of the body. In the case of testosterone, one of its effects is in muscle cells, where it [...]

You Asked: How are animations made? — Jags, Valley Stream, New York Marshall Answered: There are lots of different techniques, but the basic principle is the same. What you are trying to do is create a set of still frames that, when displayed to your eyes at a rate of 20 to 30 frames per [...]

You Asked: When did Bob Marley die? — Melanie, Kansas City, Missouri Marshall Answered: Bob Marley died (as all of us eventually do) when the cells inside of his body stopped receiving something that they needed to do their jobs. For example, if a person cannot breathe, the lack of oxygen causes the cells to [...]

You Asked: How does a wii work? — Mariah, Dandrige, Tennessee Marshall Answered: A Wii is a game console. Like all game consoles, it contains a microprocessor and a graphics system, along with some sort of input device(s). In the Wii’s case, the input devices are truly unique. They can sense their orientation in space [...]