Magnetism refers to the property of certain bodies to act with an invisible force on other bodies. This power of attraction that magnets have is, to a degree, unusual because it does not weaken after releasing energy – in normal time periods and controlled conditions. One of the main tenets of physics is that energy cannot be created nor destroyed, but can only be transformed from one kind of energy into another. This usually means that energy is transformed from one state into another or transferred from one object to another. But magnets retain their properties even when they transfer their energy onto other bodies.
Every molecule of matter may interact with a tiny magnet. Molecules of some matters, such as iron, have greater attraction potential than, for instance, molecules of wood. The magnetism in metals is a simple product of molecule and atom organization which are positioned in a way enabling them to act commonly in the same direction; they get arranged so as to affect other objects. When a piece of iron is not magnetized its molecules pull in various directions and each of them neutralizes the pull of the adjacent molecule. The magnetic force acts by arranging the molecules side by side which makes matter we act on with magnets magnetized. When molecules are arranged they can act on nearby objects.
The two ends of a magnet where the concentration of magnetic force is the largest are called magnet poles. When a magnet is used as a compass, one of its ends turns towards the north and that end is called the north pole. If you would cut that magnet into half, each of the pieces would act as a separate magnet with its north and south pole.
The basic law of magnetism is that the opposite poles attract while the same poles repel. If you remember this everything becomes much clearer. The magnetic force which appears between two magnets is explainable by the ‘inverse square’ law which practically means that upon doubling the distance the attraction between magnets drops to a quarter of the initial potency. So, a lot of the attraction force is lost with distance.
Magnetism is all around us; it is a natural occurrence with a great impact on us and everything that surrounds us. With the discovery of electromagnetic forces a new type of magnetic energy has become available to us. Electromagnetism is the basis of modern technology, and in the world of today we are constantly under the influence of electromagnetic forces, sometimes with unwanted side effects. Electromagnetism has brought changes into the world of modern medicine and magnet therapy. Now we have devices which can manipulate the flows of magnetic forces enabling us to apply them in healing certain diseases and injuries.
Magnet therapy may be used for alleviating pain, stopping infections, healing bones and scars, invigorating cells and for balancing body energy. It can also be applied in combination with most other therapies. The application of magnets of various intensities to specific body parts may have various physiological effects. Magnets may increase oxygen circulation, and the circulation of nutrients in blood; they can accelerate the healing of nerve tissues and bones; they can positively affect the production of certain hormones, increase enzyme activity and affect many other physiological processes. Small self-adhesive magnets can be used on smaller surfaces of the body while elastic magnetic bands and patches may be used on larger surfaces. Magnetic therapy has no harmful effects, so it can be safely used on pets and other animals for treating various diseases.