To correct magnetic declination, you’ll need to know the declination information for your area. Usually, you’ll be able to find this on topographic maps. That said, ...

If magnetic north lies directly between you and true north, then you’ll have a declination of zero. But in most areas, you’ll have to add or subtract to what your compass reads as north.

Understanding Declination: True North vs Magnetic North. The difference between True North (toward the North Pole, and usually the top of a map) and Magnetic North ...

Nature - Observations of Magnetic Declination made at Trevandrum and Agustia Malley in the Observatories of his Highness the Maharajah of Travancore, G.C.S.I., in the Years 1852 to 1869.

Migratory birds can extract positional information from magnetic inclination and magnetic declination alone. Proceedings of the Royal Society B: Biological Sciences , 2024; 291 (2034) DOI: 10.1098 ...

THE Meteorologische Zeitschrift for April contains an interesting article by Prof. G. Hellmann on the knowledge of the magnetic declination before the time of Christopher Columbus. Some years ago ...

Many migratory birds use Earth’s magnetic field as a compass, but some can also use information from that field to determine more or less where they are on a mental map. Eurasian reed warblers ...

The Earth, with its constantly moving molten iron core, is surrounded by a vast and glorious magnetic field. It’s as much a part of the planet as the oxygen or water that it protects, shielding ...

Your navigation system just got a critical update, one that happens periodically because Earth’s magnetic north pole keeps moving. Here’s what to know.