| 释义 |
Definition of agonic line in English: agonic linenounəˈɡɒnɪkəˈɡänik ˌlīn An imaginary line round the earth passing through both the north pole and the north magnetic pole, at any point on which a compass needle points to true north. Example sentencesExamples - Extended lines that mark the constant magnetic declination away from the agonic line are called isogonic lines.
- Navigators on these so-called agonic lines do not need to make the usual correction to their compasses.
- West of the agonic line, the needle points east of true north, and has an easterly or positive declination.
- The agonic line goes through Wisconsin near my home but I still have a 1.5 degree east error.
- When using a compass east of the agonic line, the needle points in a direction that is west of true north.
Origin Mid 19th century: from Greek agōnios, agōnos (from a- 'without' + gonia 'angle') + -ic. Definition of agonic line in US English: agonic linenounəˈɡänik ˌlīn An imaginary line around the earth passing through both the north pole and the north magnetic pole, at any point on which a compass needle points to true north. Example sentencesExamples - Extended lines that mark the constant magnetic declination away from the agonic line are called isogonic lines.
- Navigators on these so-called agonic lines do not need to make the usual correction to their compasses.
- West of the agonic line, the needle points east of true north, and has an easterly or positive declination.
- The agonic line goes through Wisconsin near my home but I still have a 1.5 degree east error.
- When using a compass east of the agonic line, the needle points in a direction that is west of true north.
Origin Mid 19th century: from Greek agōnios, agōnos (from a- ‘without’ + gonia ‘angle’) + -ic. |