magnetic field

noun

Definition of magnetic field 

: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected

Examples of magnetic field in a Sentence

Recent Examples on the Web

However, Mercury’s atmosphere is incredibly thin and its magnetic field is weak, so charged particles are constantly bombarding the surface of Mercury at super high speeds. Loren Grush, The Verge, "Two spacecraft are embarking on a seven-year journey to decode Mercury’s mysteries," 19 Oct. 2018 By placing an electrical current through one wire, its magnetic field could be used to turn on or off the flow of current in the other. Phil Lapsley, WSJ, "‘The Cryotron Files’ Review: Taking the Cold War to Subzero," 11 Oct. 2018 Most magnetic materials have their own magnetic fields with their own polarity. Kiona N. Smith, Ars Technica, "Tiny magnets will escort ions out of rare material from a shipwreck," 24 Aug. 2018 Researchers from Australia and the United States have been looking into the interaction between the planet’s atmosphere and its magnetic field. Fox News, "Jupiter's storms: Scientists now think they know what's causing these powerful storms," 10 Aug. 2018 Instruments on board Parker will study magnetic fields, plasma and energetic particles as well as imaging solar wind, a flow of ionized gases that stream past the Earth at more than a million miles an hour. James Rogers, Fox News, "NASA's Parker Solar Probe blasts off on epic journey to 'touch the Sun'," 12 Aug. 2018 That means blocking out light, radio waves, microwaves, magnetic fields, and thermal temperature differences. Rhett Allain, WIRED, "The Physics of a Puzzling Perpetual Motion Machine," 12 June 2018 Cranking the arm generates a magnetic field that’s able to charge the lithium ion battery inside tube. Liz Stinson, Curbed, "Nendo designs an attractive hand-crank phone charger," 12 Nov. 2018 In a strong magnetic field, axions can modify a light field. Chris Lee, Ars Technica, "Making light twist into a bowtie may reveal dark matter," 12 Nov. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'magnetic field.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of magnetic field

1845, in the meaning defined above

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Last Updated

15 Dec 2018

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Time Traveler for magnetic field

The first known use of magnetic field was in 1845

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More Definitions for magnetic field

magnetic field

noun

Kids Definition of magnetic field

: the portion of space near a magnetic object within which magnetic forces can be detected

magnetic field

noun

Medical Definition of magnetic field 

: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected the magnetic field of the heart

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More from Merriam-Webster on magnetic field

Spanish Central: Translation of magnetic field

Nglish: Translation of magnetic field for Spanish Speakers

Britannica.com: Encyclopedia article about magnetic field

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