Difference between revisions of "Oersted (unit)"

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(New page: The '''oersted''' (abbreviated as Oe) is the unit of magnetic-field strength |'''H'''| in the cgs (centimetre-gram-second) system of physical units. The unit is named after [[Hans Chris...)
 
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The '''oersted''' (abbreviated as Oe) is  the unit of magnetic-field strength |'''H'''| in the cgs (centimetre-gram-second) system of physical units.  
 
The '''oersted''' (abbreviated as Oe) is  the unit of magnetic-field strength |'''H'''| in the cgs (centimetre-gram-second) system of physical units.  
  
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Before 1932 the oersted was known as the gauss, a name sometimes still applied, though now more properly used for the cgs unit of  strength of [[magnetic induction]] |'''B'''|.
 
Before 1932 the oersted was known as the gauss, a name sometimes still applied, though now more properly used for the cgs unit of  strength of [[magnetic induction]] |'''B'''|.
 
[[Category: CZ Live]]
 
[[Category: Physics Workgroup]]
 

Revision as of 06:08, 17 February 2008

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The oersted (abbreviated as Oe) is the unit of magnetic-field strength |H| in the cgs (centimetre-gram-second) system of physical units.

The unit is named after Hans Christian Oersted. It is defined as the strength of a magnetic field in vacuum: A unit magnetic pole in a field of one Oe experiences a mechanical force of one dyne ( = 10−5 newton) in the direction of the field. Note here that in the cgs system a unit magnetic pole repels a like pole at a distance of one centimetre with a force of one dyne. One oersted equals 1000/4π A/m   [ampere per meter, the SI unit for |H| ].

Before 1932 the oersted was known as the gauss, a name sometimes still applied, though now more properly used for the cgs unit of strength of magnetic induction |B|.