One of the mysteries of the English language finally explained.
A unit of magnetic field strength equivalent to 79.58 amperes per metre.
- ‘Commercial AF demagnetizers are capable of maximum fields in the range of 1000-2000 oersted.’
- ‘Mid-range products such as DLTtape IV, Super DLTtape and LTO Ultrium data cartridges have a very high coercivity, in excess of 1800 oersted.’
Late 19th century: named after H. C. Oersted (see Oersted, Hans Christian).
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