Linked from

The 16 pages that link to Magnetic declination, each with the reason it gives.

• Earth's magnetic fieldRelated: It describes how a compass direction differs from true north.

• Arctic explorationRelated: Polar navigation required correcting compass readings against geographic direction.

• MagnetometerRelated: Compass readings require declination correction to align magnetic directions with maps.

• MagnetostratigraphyRelated: Declination is measured alongside inclination when characterizing remanent magnetization.

• Geomagnetic reversalRelated: Declination is one component of the directional measurements used to reconstruct past field orientations.

• CompassRelated: It explains why a compass bearing may differ from a true-north bearing.

• Magnetic anomalyRelated: Directional anomalies can alter the measured compass direction as well as field strength.

• Treaty of ZaragozaRelated: Navigators’ dependence on magnetic compasses complicated efforts to establish precise east–west positions.

• Compass roseRelated: Declination explains why a chart’s north reference may differ from a compass reading.

• Wilhelm Eduard WeberRelated: Geomagnetic surveys with Gauss used standardized observations of Earth’s field, including its direction.

• BearingRelated: A compass bearing must account for declination when converted to a true bearing.

• Chinese compassRelated: The compass points toward magnetic north, which can differ from the direction of geographic north.

• History of navigationRelated: Recognizing this variation helped navigators correct compass bearings against mapped directions.

• East (direction)Related: A compass’s eastward bearing can differ from true east because magnetic and geographic north diverge.

• History of geophysicsRelated: Its practical measurement connected geomagnetism with navigation and mapping.