write an essay on magnets
Answers
Answer:
Magnets are stones that produce magnetic fields. The magnetic field is invisible, but is responsible for the most noticeable aspect of a magnet: the attraction of a metal object or the repulsion of another magnet. Magnets are used in common everyday household items: credit cards, TVs, speakers, motors, and compasses. A magnet strength is measured by its magnetic moment. (“Magnetism”)
How did it all begin?
There are legends surrounding the discovery of magnets. One of the more common ones is that an elderly shepherd named Magnes, was herding his sheep in Magnesia, an area in Northern Greece around 4,000 years ago. While he was herding, the nail in his shoes became stuck on the ground where his sheep were grazing. The rock was supposable named either after him or the area where the stone was discovered. ("Canada Science and Technology Museum.")
Another story magnetism dates back to first century B.C. Written by the Greek poet, Lucretius. Many years after its discovery, magnets were thought to possess magical powers; it could cure the sick and ward off evil ghosts. Later, people realized that it attracted iron, and when cut into the shape of a needle or when held by a piece of string, magnets pointed in a north-south direction. It was then called a lodestone, or “leading stone,” because it leads them either north or south. ("Canada Science and Technology Museum.")
Answer: Magnet is an object that can create magnetic field by itself. It is usually made from iron. It had a pulling force called magnetism. The pulling force is able to pull a certain things like objects made by iron or steal.