angular+variation

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• 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 — 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

• variation — noun 1》 a change or slight difference in condition, amount, or level.     ↘(also magnetic variation) the angular difference between true north and magnetic north at a particular place. 2》 a different or distinct form or version.     ↘Music a new… …   English new terms dictionary

• 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 — 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… …   Aviation dictionary

• grid variation — The angular difference between grid north and magnetic north. It is measured east or west from grid north and is also called a grivation or grid magnetic angle …   Aviation dictionary

• Newton's theorem of revolving orbits — Figure 1: An attractive force F(r) causes the blue planet to move on the cyan circle. The green planet moves three times faster and thus requires a stronger centripetal force, which is supplied by adding an attractive inverse cube force. The …   Wikipedia

• Optical resolution — This article is about optical resolution in optics. For the method of separating enantiomers in chemistry, see Chiral resolution. Optical resolution describes the ability of an imaging system to resolve detail in the object that is being imaged.… …   Wikipedia