What are magnets?

Next articles: What is the history of the discovery and use of magnets to treat pain? - Magnets have been used for many centuries in attempts to treat pain. a By various accounts, this use began when people first noticed the presence of naturally magnetized... What are some examples of theories and beliefs about magnets and pain? - Some examples of theories and beliefs about using magnets to treat pain are listed below. These range from theories... How are magnets used in attempts to treat pain? - Static magnets are usually made from iron, steel, rare-earth elements, or alloys. Typically, the magnets are placed directly on the skin or placed inside clothing or other... More Than One-Third of U.S. Adults Use Complementary and Alternative Medicine, According to New Government Survey - According to a new nationwide government survey, 1 36 percent of U.S. adults aged 18 years and over use some form of complementary and alternative medicine (CAM)... People Living With Cancer (www.plwc.org) Features Live Chat on Complementary and Alternative Medicine and Cancer - Alexandria, VA--The American Society of Clinical Oncology's (ASCO) award-winning patient Web site, People Living...

Magnets are objects that produce a type of energy called magnetic fields. All magnets possess a property called polarity-that is, a magnet's power of attraction is strongest at its opposite ends, usually called the north and south poles. The north and south poles attract each other, but north repels north and south repels south. All magnets attract iron.

Magnets come in different strengths, most often measured in units called gauss (G). For comparison purposes, the Earth has a magnetic field of about 0.5 G; refrigerator magnets range from 35 to 200 G; magnets marketed for the treatment of pain are usually 300 to 5,000 G; and MRI (magnetic resonance imaging) machines widely used to diagnose medical conditions noninvasively produce up to 200,000 G.

The vast majority of magnets marketed to consumers for health purposes (see the box below) are of a type called static (or permanent) magnets. They have magnetic fields that do not change.

Examples of Products Using Magnets
Shoe insoles Heel inserts Mattress pads Bandages	Belts Pillows and cushions Bracelets and other jewelry Headwear

The other magnets used for health purposes are called electromagnets, because they generate magnetic fields only when electrical current flows through them. The magnetic field is created by passing an electric current through a wire coil wrapped around a magnetic core. Electromagnets can be pulsed-that is, the magnetic field is turned on and off very rapidly.

Link to this article, just copy and paste following code: <a href=http://www.oqey.com/article648.html>What are magnets?</a>

Article viewed 445 time(s). Read more:

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 |