| 单词 | tube of flow |
| 释义 | > as lemmastube of flow line of flow in Hydrodynamics, an imaginary curve so drawn within a liquid at any instant that at each point of the curve the instantaneous velocity of the liquid is along the tangent. In general a line of flow is not the path of a particle, but varies with the time. But when the motion is steady, i.e. not a function of the time, the lines of flow are fixed, and are paths of particles, being then called stream-lines. tube of flow, an imaginary tube bounded by surfaces across which there is no flow of liquid or electric current.extracted from flown.1tube of flow 8. Physics. A tubular figure conceived as being formed by lines of force or action passing through every point of a closed curve; as tube of flow (see flow n.1 1b), tube of force, tube of induction. ΘΚΠ the world > matter > physics > mechanics > dynamics > fluid dynamics > [noun] > specific figure of flow tube of flow1878 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > [noun] > field > movements in tube of force1878 fringing1893 1878 W. K. Clifford Elem. Dynamic 199 If we take a small closed curve, and draw lines of flow through all points on it, the tubular surface traced out by these lines is called a tube of flow. 1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) I. 378 Tube of Flow. 1885 H. W. Watson & S. H. Burbury Math. Theory Electr. & Magn. I. 104 The portions of any surfaces in an electric field intercepted by the same tube of force are called corresponding surfaces,..the algebraic sum of the electricities included in the tube in its passage from any one surface to any other. 1902 T. O'C. Sloane Standard Electr. Dict. Tubes of Force, aggregations of lines of force, either electrostatic or magnetic. They generally have a truncated, conical or pyramidal shape and are not hollow. Every cross-section contains the same number of lines. < as lemmas |
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