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Deviation of the compass from true north
- At most places on the Earth's surface, the compass doesn't point exactly toward geographic north. The deviation of the compass from true north is an angle called "declination" (or "magnetic declination").
www.usgs.gov › faqs › what-declination
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The deviation of the compass from true north is an angle called "declination" (or "magnetic declination"). It is a quantity that has been a nuisance to navigators for centuries, especially since it varies with both geographic location and time.
On USGS maps, the declination diagram shows geographic north as a vertical line with a five-pointed star (H) at the top. The direction of magnetic north is indicated by a line at an angle to the right (here in Utah) with an arrowhead and is marked “MN.”
Magnetic declination (also called magnetic variation) is the angle between magnetic north and true north at a particular location on the Earth's surface. The angle can change over time due to polar wandering .
What is declination? It’s the angle between the geographic and magnetic north poles. Magnetic declination refers to the angle between the geographic North Pole and the magnetic pole located in the Arctic Ocean.
The magnetic declination is the azimuth of the Earth’s magnetic field. Magnetic declination varies from place to place and varies slowly over time. Currently (2020) the declination in Edmonton is about 014°. Most geological compasses have a mechanism for compensating for declination.
The meaning of DECLINATION is angular distance north or south from the celestial equator measured along a great circle passing through the celestial poles. How to use declination in a sentence.
Sep 1, 2022 · The deviation of the compass from true north is an angle called “declination” (or “magnetic declination”). It is a quantity that has been a nuisance to navigators for centuries, especially since it varies with both geographic location and time.
