magnetic variation
Britishnoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Each line on the map is like a contour line but, instead of marking a uniform measurement of height, it marks a uniform measurement of magnetic variation.
From "The Invention of Science" by David Wootton
Hailey’s isogonic map of magnetic variation, published in 1701.
From "The Invention of Science" by David Wootton
Hailey had conducted two expeditions to make the measurements on which the map was based, and the hope was that this would open the way to using magnetic variation to measure longitude.
From "The Invention of Science" by David Wootton
A superior graduated compass for ascertaining the amount of magnetic variation, by amplitude or azimuth, when the sun is from 8° to 15° high, either after its rising or before its setting.
From The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. by Belcher, Edward, Sir
And there's no knowing what compass correction to allow for a pocket compass, and there's the magnetic variation besides.
From The Boy With the U.S. Miners by Rolt-Wheeler, Francis
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.
