angular drift

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• Angular mil — An angular mil, also mil, is a unit of angle. All versions of the angular mil are approximately the same size as a trigonometric milliradian. Contents 1 History 2 Mathematical principle 3 Use …   Wikipedia

• drift — i. The lateral divergence from the prescribed flight path of an aircraft resulting primarily from the effects of a cross wind. ii. A slow movement in one direction of an instrument pointer or other marker. iii. A slow change in frequency of a… …   Aviation dictionary

• drift — Synonyms and related words: Brownian movement, Zeitgeist, aberrancy, aberration, accumulation, advance, aeroplane, affective meaning, affluence, afflux, affluxion, aim, airlift, airplane, alluvion, alluvium, amble, angular motion, anthill, army,… …   Moby Thesaurus

• Stokes drift — For a pure wave motion in fluid dynamics, the Stokes drift velocity is the average velocity when following a specific fluid parcel as it travels with the fluid flow. For instance, a particle floating at the free surface of water waves,… …   Wikipedia

• apparent drift — An error in the directional gyro resulting from the effect of the earth’s rotation and longitudinal position. At the equator, the rotation of the earth causes no movement of the observer about the directional gyro vertical axis, and there is thus …   Aviation dictionary

• earth-rate unit — A unit of angular drift, as of a gyro, equal to the rate of angular movement of the earth with respect to the stars (i.e., 15° per hour) …   Aviation dictionary

• Coriolis effect — For the psychophysical perception effect, see Coriolis effect (perception). Classical mechanics Newton s Second Law …   Wikipedia

• Airy wave theory — In fluid dynamics, Airy wave theory (often referred to as linear wave theory) gives a linearised description of the propagation of gravity waves on the surface of a homogeneous fluid layer. The theory assumes that the fluid layer has a uniform… …   Wikipedia

• physical science, principles of — Introduction       the procedures and concepts employed by those who study the inorganic world.        physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …   Universalium

• Norden bombsight — The Norden bombsight at the Computer History Museum in Mountain View, California. This example does not have the associated autopilot attached …   Wikipedia

• glacial landform — ▪ geology Introduction  any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …   Universalium