Hall effect

From Glossary of Meteorology
Revision as of 17:12, 26 January 2012 by imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == Hall effect == </div> <div class="definition"><div class="short_definition">The [[electric ...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



Hall effect

The electric field produced by an electric current in a conductor in a magnetic field.

The electric field, which is perpendicular to both the current and the magnetic field, is the reaction field (in a bounded conductor) that balances the magnetic force on moving charges. It is named after Edwin H. Hall, who in 1879 first discovered this effect in laboratory investigations of gold. The Hall effect is a determinant in the behavior of the electrical currents generated by winds in the lower ionosphere, since these winds advect the ionized layers across the earth's magnetic field and produce a complex electrical current system in the ionosphere. The current system in turn produces small changes in the earth's magnetic field as measured at the surface.
See also magnetic induction.


Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact [email protected]. Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.