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ISOGONIC LINES (Gr. iQoycwLos, equian...

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Originally appearing in Volume V14, Page 881 of the 1911 Encyclopedia Britannica.
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ISOGONIC LINES (Gr. iQoycwLos, equianguN), lines connecting those parts of the earth's surface where the magnetic declination is the same in amount (see MAGNETISM, TERRESTRIAL.).
End of Article: ISOGONIC LINES (Gr. iQoycwLos, equianguN)
ISODYNAMIC LINES (Gr. ivoSbvaµos, equal in power)

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