Declination

Science / Geology / Declination: At any place on Earth, the angle between the magnetic and rotational poles.
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Magnetic Declination

Science / Geology / Magnetic Declination: The horizontal angular difference between True North and Magnetic North. MORE

Declinational Reduction

Science / Tides and Currents / Declinational Reduction: A processing of observed high and low waters or flood and ebb tidal currents to obtain quantities depending upon changes in the declination of the Moon; such as tropic ranges or speeds, height or spee MORE