annual variation

annual variation
The quantum of yearly change in variation at a place. This is normally indicated on the bottom of a map or chart and must be added/subtracted to/from the figure given on the map after taking into consideration the number of years elapsed since the last survey for the map. Variation is the angular difference between the direction of true north and magnetic north at any given point.

Aviation dictionary. 2014.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Annual variation — Variation Va ri*a tion, n. [OE. variatioun, F. variation, L. variatio. See {Vary}.] [1913 Webster] 1. The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity;… …   The Collaborative International Dictionary of English

  • annual variation — metinis kitimas statusas T sritis fizika atitikmenys: angl. annual variation vok. jährliche Veränderung, f rus. годичная вариация, f; годичное изменение, n pranc. variation annuelle, f …   Fizikos terminų žodynas

  • annual variation — noun : the yearly change in a star s mean right ascension or declination produced by precession of the equinoxes and proper motion of the star …   Useful english dictionary

  • Variation — Va ri*a tion, n. [OE. variatioun, F. variation, L. variatio. See {Vary}.] [1913 Webster] 1. The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity; deviation; as …   The Collaborative International Dictionary of English

  • Variation compass — Variation Va ri*a tion, n. [OE. variatioun, F. variation, L. variatio. See {Vary}.] [1913 Webster] 1. The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity;… …   The Collaborative International Dictionary of English

  • Variation of the moon — Variation Va ri*a tion, n. [OE. variatioun, F. variation, L. variatio. See {Vary}.] [1913 Webster] 1. The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity;… …   The Collaborative International Dictionary of English

  • Variation of the needle — Variation Va ri*a tion, n. [OE. variatioun, F. variation, L. variatio. See {Vary}.] [1913 Webster] 1. The act of varying; a partial change in the form, position, state, or qualities of a thing; modification; alternation; mutation; diversity;… …   The Collaborative International Dictionary of English

  • variation annuelle — metinis kitimas statusas T sritis fizika atitikmenys: angl. annual variation vok. jährliche Veränderung, f rus. годичная вариация, f; годичное изменение, n pranc. variation annuelle, f …   Fizikos terminų žodynas

  • variation — noun ADJECTIVE ▪ considerable, dramatic, enormous, extreme, great, major, marked, significant, substantial, tremendous, wide …   Collocations dictionary

  • variation — The angular difference between the direction of true north and magnetic north at any given point. It is measured in degrees east or west according to whether magnetic north lies east or west of this north. Variation is determined by the… …   Aviation dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”