# have+an+unsteady+motion

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**To have the wind**— Wind Wind (w[i^]nd, in poetry and singing often w[imac]nd; 277), n. [AS. wind; akin to OS., OFries., D., & G. wind, OHG. wint, Dan. & Sw. vind, Icel. vindr, Goth winds, W. gwynt, L. ventus, Skr. v[=a]ta (cf. Gr. ah ths a blast, gale, ah^nai to… …2

**vacillate**— v. n. 1. Sway, rock, move to and fro, have an unsteady motion, waver. 2. Waver, fluctuate, hesitate, be inconstant, be unsettled, be unsteady, play fast and loose, blow hot and cold, box the compass, run with the hare and hunt with the hound, be… …3

**Navier–Stokes equations**— Continuum mechanics …4

**Tidal bore**— Aegir redirects here. For the mythological figure, see Ægir. For the moon of Saturn, see Aegir (moon). The tidal bore in Upper Cook Inlet, Alaska A tidal bore (or simply bore in context, or also aegir, eagre, or eygre) is a tidal phenomenon in… …5

**Fluid dynamics**— Continuum mechanics …6

**Bernoulli's principle**— This article is about Bernoulli s principle and Bernoulli s equation in fluid dynamics. For Bernoulli s Theorem (probability), see Law of large numbers. For an unrelated topic in ordinary differential equations, see Bernoulli differential… …7

**Insect wing**— Original veins and wing posture of a dragonfly. Hoverflies hovering to mate …8

**Computational fluid dynamics**— Computational physics Numerical analysis  …9

**Insect flight**— Insects are the only group of invertebrates known to have evolved flight. Insects possess some remarkable flight characteristics and abilities, still far superior to attempts by humans to replicate their capabilities. Even our understanding of… …10

**D'Alembert's paradox**— In fluid dynamics, d Alembert s paradox (or the hydrodynamic paradox) is a contradiction reached in 1752 by French mathematician Jean le Rond d Alembert.[1] D Alembert proved that – for incompressible and inviscid potential flow – the drag force… …