The force that attracts or repels at a distance is called magnetism, and is due to a magnetic field that is caused by moving electrically charged particles. Magnets have two opposing poles, and the flow of electrons from one pole to the other is what causes a field. This flow of electrons is called the lines of flux.
Lines of flux
One thing that is really cool about fields, is that it is still a mystery just exactly what they are made up of, but we do know that it is a special property of space! If two objects with magnetic fields come near each other, they can create a force. This force is called magnetism. Depending on whether the poles of two objects are like (N, N) or dislike (N, S) they will either repel or attract respectively.
To demonstrate the differences I am using a liquid with magnetic properties known as ferrofluid, and three neodymium magnets with insulators in between them.
Ferrofluid, and three neodymium magnets with insulators.
When the group of magnets was applied with the end towards
the fluid, spikes appear indicating the lines of flux.
Here's where it gets interesting! When all three magnets are facing
the fluid, the interaction changes, and in between the two outside fields
a force was created!
Here is one of the best examples of a "force" field your likely to see...since like gravity it is invisible! Something to keep in mind when out in the field using a Tri-Field Meter.
I hope this weeks installment was helpful, and please share with everyone! See you next week!