geomagnetic equator
geomagnetic equator A line joining points on the Earth's surface where the inclination of the geomagnetic field is zero. To avoid magnetic-anomaly distortions it is usually calculated from harmonics of the geomagnetic field less than 12.
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Cyrus West Field
Cyrus West Field (1819-1892), American merchant and promoter, laid the first transatlantic telegraph cable.
Cyrus F…
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geomagnetic equator