apparent velocity

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• apparent velocity — tariamasis greitis statusas T sritis fizika atitikmenys: angl. apparent velocity vok. scheinbare Geschwindigkeit, f rus. кажущаяся скорость, f pranc. vitesse apparente, f …   Fizikos terminų žodynas

• Apparent wind — is the wind experienced by a moving object. Apparent wind in sailingIn sailing, the apparent wind is the actual flow of air acting upon a sail, or the wind as it appears to the sailor. It differs from the true or prevailing wind seen by a… …   Wikipedia

• apparent solar day — The period between two successive transits of a particular meridian on the earth by the apparent sun. Because of the elliptical shape of the earth’s orbit, the apparent angular velocity of the sun as seen is not constant, or the apparent sun’s… …   Aviation dictionary

• Apparent magnitude — Asteroid 65 Cybele and 2 stars with their magnitudes labeled The apparent magnitude (m) of a celestial body is a measure of its brightness as seen by an observer on Earth, normalized to the value it would have in the absence of the atmosphere.… …   Wikipedia

• Apparent weight — An object s weight, henceforth called actual weight , is the downward force exerted upon it by a gravitational field. By contrast, an object s apparent weight is the (usually upward) force (the normal force , or reaction force ), typically… …   Wikipedia

• Apparent places — The apparent place of an object is the position in space as seen by the observer. Because of physical and/or geometrical effects it has a deviation from the true position .In Astronomy the term apparent places of stars means the visual or… …   Wikipedia

• apparent wind — (wind), the velocity of air as measured from a moving object, as a ship. * * * …   Universalium

• 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

• apparent wind — noun : the wind as observed aboard a moving vessel, being the vectorial combination of the true wind and the wind due to the ship s motion * * * (wind), the velocity of air as measured from a moving object, as a ship …   Useful english dictionary

• apparent ground-water velocity —    See specific discharge …   Lexicon of Cave and Karst Terminology

• Group velocity — [ Frequency dispersion in bichromatic groups of gravity waves on the surface of deep water. The red dot moves with the phase velocity, and the green dots propagate with the group velocity. In this deep water case, the phase velocity is twice the… …   Wikipedia