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magnetic field of the Earth

Cultural  

  1. The magnetic field (see magnetism) that surrounds and permeates the Earth. It is the presence of this field that causes compass needles to line up in a north-south direction. The origin of the Earth's magnetic field is poorly understood at the present time.

Example Sentences

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Even if it might make maps of the magnetic field of the Earth, these maps are not precise enough to have good landmarks.

From The Brain, A Decoded Enigma by Moisa, Dorin Teodor

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.