Magnetism Some Remarkable Stories And Details On The Phenomenon
Magnetism comprises one of the first natural forces that humans ever discovered, however, it was only lately that the complete usage of magnetism has been understood and practiced upon. Many gadgets and technologies have magnetism principles behind them, so much so that our univetse appears to be incomplete without them. For {instance|example], if you go for an ipod repair or an iphone repair then very certainly it is electromagnetism that powers these devises. Have a look at some of the intriguing facts and stories on magnetism that have been collected through ancient times.
You may be wondering how magnets were actually discovered. Legend has it that a shepherd named Magnes who used to exist some 4,000 years ago got his shoes stuck to a rock that comprised of nails that got attracted to a rock named magnetite. Without much understanding of the subject at that period, it was believed that the rock had supernatural powers.
Archimedes, a researcher of ancient Greece, is believed to have pulled the nails out of rivals ships using a magnet which ended in the sinking of all the foes ships. It was Archimedes who understood the significance of magnetism. Besides, magnets have been employed throughout ancient times for navigation reasons by sailors. They discovered that a piece of magnet suspended by a thread will always align in the North-South direction. This is what resulted in the discovery of compasses. This is why magnetite was called the leading stone as it helped in direction.
Frequently, you will find that magnets are made of steel or iron. Whereas, powerful magnets can be manufactured by alloys of metals such as iron, nickel, copper, cobalt, and so on. In older times, hammering and heating a piece of steel or iron in the north-south direction was used as a way to magnetize them. With this method, the molecules have assembled themselves in the north-south direction. Magnets are not just stones found on our earth, but all of earth itself behaves as a magnet. Earth is a magnet that even comprises of the North and South Pole. When you place a non-magnetic material in a North to South direction, it results in magnetizing it. This occurs due to the availability of a magnetic field surrounding the earth and the molecules obtain sufficient time to get assembled in the North-South direction.
The question is; what makes the earth to change into a magnet? It is believed that this magnetic power of the earth comes from a fluid in the center of the earth that causes the earth to turn in to a giant electromagnet. It’s mainly the flow of liquid metal that generates electrical flow, and a magnetic field is generated as a result of this current. Yet, the puzzling bit is explaining the source of the magnetic field that initiated it all in the first place. There is a theory that the strong magnetic field from the sun was the reason to initiate the process when earth was created. However, we can’t declare this for certain. Whatever way it began, it is really a wonder of nature.
No tags for this post.
Tags: 
