How Do Magnetic Fields Work?

Video Transcript

"Hello my name is Remy Dou, I am a science teacher here at Miami Christian School in Miami, Florida. Let's talk a little bit about how magnetic fields work. Magnetic fields are generated by magnets. And in fact a magnet is any object that can generate a magnetic field. Magnetic fields have strengths that is measured in a unit called a tesla. Some magnets, some magnetic fields can be stronger than others. And they can act on other objects. For example, a magnetic field can attract a object called a pheral magnetic object. A pheral magnetic object is anything that is attracted by a magnetic field. Magnetic fields asides from attracting other objects can also repel other magnetic fields. And they also have a direction. Magnets usually are considered dipoles, that means that they have two poles, a north pole and a south pole. This is very typical when you are looking at a bar magnet. But spherical magnets like the earth itself is a magnet, also has a north pole and a south pole. And most people don't know that the reason why objects have this magnetic field is because of the spin of the electrons in the atoms. The overall of these electrons creates a north and south pole."