Electromagnets
Electromagnets are simple devices. They are basically a wire that is wound around iron. By itself, winding a wire around iron will not do anything. However, if you add some kind of voltage, this will generate electricity that has a magnet field. This is what an electromagnet is all about. They can also be wound around air, but in that case they are a slightly different thing. They are similar to electromagnets but they are called a solenoid.
If you want to learn more about electromagnets there are several things you can do. First of all, you can read an overview about it in an encyclopedia or online. Getting an overview first will help you learn enough background education to further your study. Once you understand which areas to focus on, then you will know where and how to find the information you need. Even though they may seem simple on the surface, things could get rather complex. There are all kinds of formulas, equations, and applications concerning electromagnets and it can get rather technically pretty quickly.
It is possible to make your own electromagnets at home using simple devices. However, you may need to do the experiment with someone. This is especially true of young children. Exposing kids to electricity can be dangerous but it can also be a learning experience. If you want to learn more about electromagnets sometimes the best thing to do is learn how to make them yourself. To find experiments you can look in textbooks, lab books, online, or ask around to see if people know of where to find good experiments. It is important to make sure you follow the directions exactly, however, because it is easy to get hurt. There are several different ways to make them.
Electromagnets actually do have a practical application. They are used in things such as the cathode ray tube. If you want to better understand what they are and how they work, it is a good idea to find the different applications for it. One important thing to remember is that you can get an overview of how they work from encyclopedias and the internet. This is a good place to start because they can be really complex.
