angular drift
1Angular 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 …
2drift — 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… …
3drift — 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,… …
4Stokes 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,… …
5apparent 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 …
6earth-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) …
7Coriolis effect — For the psychophysical perception effect, see Coriolis effect (perception). Classical mechanics Newton s Second Law …
8Airy 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… …
9physical 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… …
10Norden bombsight — The Norden bombsight at the Computer History Museum in Mountain View, California. This example does not have the associated autopilot attached …
