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- Magnet (13875 bytes)
2: ...ight|thumb|250px|Magnetic lines of force of a bar magnet shown by iron filings on paper]]
4: ...gnesia]] is an area in Greece where deposits of [[magnetite]] have been discovered since antiquity.
6: ...omagnets rely upon electric current to generate a magnetic field--when the current increases, so does the ...
8: ==Physical origin of magnetism==
10: ===Permanent magnets===
Page text matches
- Scientific revolution (17675 bytes)
22: *The Earth as a magnet
58: ...principles. Scientists spoke about the 'soul of a magnet' as easily as they spoke about its velocity. - Timeline of invention (28171 bytes)
192: * [[1823]]: [[Electromagnet]]: [[William Sturgeon]]
201: * [[1831]]: [[Multiple coil magnet]]: [[Joseph Henry]]
202: * [[1831]]: Magnetic acoustic [[telegraph]]: [[Joseph Henry]]
232: * [[1852]]: [[Airship]]: [[Henri Giffard]]
344: * [[1897]]: [[Automobile, magneto]]: [[Robert Bosch]] - Chemistry (12553 bytes)
70: ... and [[ferromagnetism|ferromagnetic]] phases of [[magnet]]ic materials. Even the familiar [[ice]] has man... - Seismograph (4037 bytes)
32: .... A mirror on the flag reflects a light beam. A magnet induces [[Eddy current|eddy currents]] in the fla...
34: ...coil, moving in the magnetic field of a magnetron magnet (cheaply available from microwave oven repair sho... - Compass (8275 bytes)
3: ...urately with [[Earth's magnetic field|Earth]]'s [[magnetic field]]. A compass provides a known reference d...
5: ...et's [[magnetosphere]]. Any [[instrument]] with a magnetized bar or [[needle]] turning freely upon a pivot...
9: ...ssing the audience. The earliest record of use of magnetic lodestone as a direction point was in a [[4th c...
11: ...by rubbing its tip with lodestone, and hanged the magnetic needle with one single strain of silk with a b...
20: ...gator due to his competence and knowledge in the "magnetic compass". (See [[Inventio Fortunata]].) - Sodalite (4894 bytes)
61: ...]] in [[Canada]]; and [[Litchfield, Maine]] and [[Magnet Cove, Arkansas]] in the [[USA]]. Smaller deposits... - Electron microscope (5936 bytes)
11: ... specimen. They are then magnified by a series of magnetic lenses until they hit photographic plate or lig... - San Francisco, California (55022 bytes)
7: image_seal = Sfseal.gif |
37: ...y became a [[Underground culture|counterculture]] magnet in the second half of the 20th century. It was a ...
79: San Francisco has often been a magnet for America's [[counterculture]]. During the [[1...
240: [[Image:Asian_sf1.gif|thumb|250px|left|Population of [[Asian]]s in San ... - Saint Paul, Minnesota (13759 bytes)
9: flag = StPaulMN.gif |
10: seal = StPaulSeal.gif |
77: *Capitol Hill Gifted/Talented Magnet [http://capitolhill.spps.org] - Jackson, Mississippi (21073 bytes)
7: flag = JacksonMS.gif |
100: * Bailey Magnet High School - Guitar (36953 bytes)
24: ...]. Rickenbacker was the inventor of the horseshoe-magnet pickup. However, it was [[Danelectro]] that first...
63: ...easures the [[magnetic flux density]] of multiple magnets located in the pickup. These pickups produce a b...
65: ...In many cases the electronics have some sort of [[magnetic shielding]] to prevent pickup of external inter...
130: ...r very low sound without amplification. [[Electromagnetic]] [[Pickup (music|pickup]]s (single and double ... - Bismuth (9188 bytes)
62: | Solid ([[diamagnetic]])
146: ...y resembles [[arsenic]] and [[antimony]]. Most diamagnetic of all metals, bismuth has the lowest thermal c...
149: ...d the only non-toxic. No other metal is more [[diamagnetic]] than bismuth, except [[mercury (element)|merc...
159: *Strong permanent [[magnet]]s can be made from the alloy [[bismanol]] ([[man... - Cobalt (13481 bytes)
43: ... </td><td>solid ([[magnetism|ferromagnetic]])</td></tr>
102: ...atment agent. Cobalt has a [[Permeability (electromagnetism)|relative permeability]] two thirds that of ir...
113: * [[Magnet]]s and magnetic [[recording media]].
114: ** [[Alnico]] magnets.
152: ...undant number of compounds. Oxides are [[antiferromagnetic]] at low [[temperature]] CoO ([[Neel temperatur... - Helium (36603 bytes)
108: ...-sea breathing systems, to cool [[superconducting magnet]]s, in [[helium dating]], for inflating [[balloon...
148: ...[[magnetic resonance imaging]], [[superconducting magnet]]s, [[cryogenics]], and to remove thermal noise ... - Holmium (7766 bytes)
128: ...d with [[yttrium]], it forms highly [[magnetism | magnetic]] compounds.
133: ...]]s as a [[magnetic pole]] piece (also called a [[magnetic flux concentrator]]). Since it can absorb [[nuc...
135: *its very high magnetic moment is suitable for use in yttrium-[[iron]]-... - Aluminium (26079 bytes)
27: {{Elementbox_magnetic | [[paramagnetism|paramagnetic]] }}
52: ... due to the protective oxide layer. It is also nonmagnetic and nonsparking and is the second most malleabl...
68: ...aluminium is used in [[MKM steel]] and [[Alnico]] magnets. - Manganese (14965 bytes)
43: ... </td><td>solid ([[magnetism|usually nonmagnetic]])</td></tr>
106: ...lty, but easily oxidized. Manganese metal is ferromagnetic only after special treatment.
161: *[[Magnet]] - Neodymium (12345 bytes)
43: ...tter]] </td><td>solid ([[magnetism|__]])</td></tr>
115: ...onger than [[samarium-cobalt magnet]]s. Neodymium magnets appear in products such as Sennheiser or iPod in...
164: ...magnets have been tested for medical uses such as magnetic braces and bone repair, but [[biocompatible|bio... - Niobium (10560 bytes)
60: | solid ([[magnetism|__]])
182: ...gnet]]s capable of producing exceedingly strong [[magnetic field]]s. - Samarium (10157 bytes)
59: | solid ([[magnetism|__]])
178: ... magnet material with the highest resistance to demagnetization of any known material, and an intrinsic co...
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