Oersted

/'ə:stəd/
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Definition
  1. Noun:
    • The unit of magnetic field strength in the centimeter-gram-second system of units: An "oersted" is a unit used to measure the intensity of a magnetic field, specifically the magnetizing force. It is defined as the field strength one centimeter from a unit magnetic pole.
    • Hans Christian Ørsted, a Danish physicist: The unit is named in honor of Hans Christian Ørsted (1777–1851), who discovered that electric currents create magnetic fields.
Usage Examples
  • Noun (Unit of Measurement):
    • The magnetic field strength was measured at 50 oersteds.
    • In the CGS system, the oersted is the unit for magnetizing force.
  • Noun (Person):
    • Oersted's discovery of electromagnetism was a pivotal moment in science.
Advanced Usage
  • Technical Context: The oersted is largely superseded by the ampere per meter (A/m) in the International System of Units (SI), but it is still used in some older scientific literature and specific fields like geophysics.
    • The residual magnetism in the rock sample was recorded in oersteds.
Variants and Related Words
  • Ørsted: The Danish spelling of the physicist's surname.
  • Oe: A common abbreviation for the unit oersted.
    • The field strength was 10 Oe.
Synonyms
  • Magnetizing force: A descriptive term for the physical quantity measured in oersteds.
  • H-field: The technical symbol for the magnetic field strength vector, for which the oersted is a unit.
Related Phrases and Terms
  • Oersted's law: A principle stating that an electric current creates a magnetic field around it.
    • Oersted's law is demonstrated by the deflection of a compass needle near a current-carrying wire.
  • Oersted experiment: Refers to Hans Christian Ørsted's famous 1820 experiment demonstrating the connection between electricity and magnetism.
Noun
  1. Danish physicist (1777-1851)
  2. the magnetic field strength 1 cm from a unit magnetic pole

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