Magnetic particles: what they are and how the test is performed
A little history of magnetism
The discovery of magnetism dates back more than two thousand years in the history of mankind. When a black stone capable of attracting iron was discovered in a Turkish city called Magnesia. This rock was given the name lodestone, more commonly known as lodestone.
The properties of lodestone were already known to the Greeks, Romans, and Chinese. When a lodestone is rubbed against a piece of iron, this piece is magnetized and is capable of attracting others. In this way it was discovered that the magnets generated in this way are polarized. Each end of the magnet was given the name “north pole” and “south pole”. These always exist, no matter how many times the magnet is broken.
It was the British scientist William Gilbert who established the physical law that “opposite poles attract, like poles repel”. Gilbert dedicated himself to investigating magnetism, electricity, and the relationship that could exist between the two. This is how he came to the conclusion that the earth behaves like a giant magnet. And that magnetism is a natural force.
The field of action of magnetic particles
Known as a magnetic field, it is the scene of action of magnetic particles. It is…
