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isogonic line

/ˌaɪsəˈɡɒnɪk laɪn/

1 entry

phrase

/ˌaɪsəˈɡɒnɪk laɪn/C1formalscientific
  • ruВоображаемая линия на карте или схеме, соединяющая точки, в которых магнитное склонение (угол между истинным севером и магнитным севером) одинаково.

An imaginary line on a map or chart connecting points where the magnetic declination (the angle between true north and magnetic north) is equal.

  1. Line of equal magnetic declinationC2formal

    An imaginary line on a map connecting points where the magnetic declination (the angle between magnetic north and true north) is the same.

    ruИзогона

    • The isogonic line for 10 degrees east runs through this region.
    • Navigators use isogonic lines to correct compass readings.
    • The map shows isogonic lines for the entire continent.