Word Finder - displacement

definition

The act of displacing, or the state of being displaced; a putting out of place.

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The quantity of a liquid displaced by a floating body, as water by a ship, the weight of the displaced liquid being equal to that of the displacing body.

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The process of extracting soluble substances from organic material and the like, whereby a quantity of saturated solvent is displaced, or removed, for another quantity of the solvent.

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Moving the target to avoid an attack; dodging.

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A vector quantity which denotes distance with a directional component.

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(grammar) The capability of a communication system to refer to things that are not present (that existed or will exist at another time, or that exist at another location).

This displacement is in no way finished; in fact, it has hardly begun.

We have already called attention to the gradual displacement of the gild merchant by the craft organizations.

If P represent the average value of the component of a force in the direction of the displacement, s, of its point of application, the product Ps measures the work done during the displacement.

Mechanical ventilation may be effected either by direct exhaustion or centrifugal displacement of the air to be removed.

Then the displacement at 0 will take place in a direction perpendicular to 0 1 0, and lying in the plane Z0 1 0; and, if 1' be the displacement at 0, reckoned positive in the direction nearest to that in which the incident vibrations are reckoned positive, = 4?y (1 +cos 0) sin 4 f' (bt - r).

If the change of temperature progressed uniformly from one side to the other, the result would be a lateral displacement of the image without loss of definition; but in general both effects would be observable.

Suppose the ship turns about an axis through F in the water-line area, perpendicular to the plane of the paper; denoting by y the distance of an element dA if the water-line area from the axis of rotation, the change of displacement is EydA tan 8, so that there is no change of displacement if EydA = o, that is, if the axis passes through the C.G.

Poncelet, from which the work done during a given displacement could be read off directly.

The first of these is the requirement that each line should have a complete sense in itself; this produces a certain jerkiness, and often led among the Arabs to displacement in the order of the lines in a long poem.

Taking all into account, the available strength of the fleet might be put at 7 armour-clad ships, of which the " Messudiyeh " was one, the six others varying in displacement from 2400 to 6400 tons; two cruisers (unarmoured) of 3800 tons displacement; some 18 gunboats; 12 destroyers, 16 first-class torpedo boats and 6 second-class torpedo boats.

For experiments with long thin rods or wires it has an advantage over the other arrangements in that the position of the poles need not be known with great accuracy, a small upward or downward displacement having little effect upon the magnetometer deflection.

The naval programme of the republic for 1905 provided for the prompt construction of 3 battleships of the largest displacement, 3 armoured cruisers, 6 destroyers, 12 torpedo boats and 3 submarine boats; and by 1909 the reorganization of the navy was far advanced.

On the same principle we may estimate the least visible displacement of the eye-piece of a telescope focused upon a distant object, a question of interest in connexion with range-finders.

Suppose that the dielectric has a constant K, then we must multiply both sides by K and the expression for the energy per unit of volume of the field is equivalent to z DE where D is the displacement or polarization in the dielectric.

When the force acts on a body free to turn about a fixed axis only, it is convenient to express the work done by the transformed product TO, where T is the average turning moment or torque acting to produce the displacement 0 radians.

The angular displacement, 0, of the disk is made proportional to the displacement, s, of the point of application of the force by suitable driving gear.

We can represent waves of longitudinal displacement by a curve, and this enables us to draw very important conclusions in a very simple way.

If the waves are continuous and each of the same shape they form a " train," and the displacement curve repeats itself.

The figure shows that when the curve of displacement slopes down in the direction of propagation there is compression, and the pressure is above the normal, and that when it slopes up there is extension, and the pressure is below the normal.

If a wave travels on without alteration the travelling may be represented by pushing on the displacement curve.

At L the displacement backward decreases, or the motion is forward FIG.

To find the relation of the velocity to displacement and pressure we shall express the fact that the wave travels on carrying all its conditions with it, so that the displacement now at M will arrive at N while the wave travels over MN.

Every particle in the plane will have the same displacement and the same velocity, and these will be perpendicular to the plane and parallel to the line of propagation.

The simplest form of wave, so far as our sensation goes - that is, the one giving rise to a pure tone - is, we have every reason to suppose, one in which the displacement is represented by a harmonic curve or a curve of sines, y=a sin m(x - e).

The chief experimental basis for supposing that a train of longitudinal waves with displacement curve of this kind arouses the sensation of a pure tone is that the more nearly a source is made to vibrate with a single simple harmonic motion, and therefore, presumably, the more nearly it sends out such a harmonic train, the more nearly does the note heard approximate to a single pure tone.

Let it be represented by a displacement curve Ahbkc. Its periodicity implies that after a certain distance the displacement curve exactly repeats itself.

Now we can see that two notes of the same pitch, but of different quality, or different form of displacement curve, will, when thus analysed, break up into a series having the same harmonic wave-lengths; but they may differ as regards the members of the series present and their amplitudes and epochs.

We may represent the displacement due to one of the trains by y l =a sin 2 i (24) where x is measured as in equation (16) from an ascending node as A in fig.

In (5) the displacement is evidently equal and opposite to that in (1).

If w is the total pressure excess, and if y is the total displacement at x, then w = E Xchange of volume _original volume = - Edy/dx.

At the nodes A, B, C, D, E there is no displacement, but there are maximum volume and pressure changes.

When the displacement is represented by Ahbkc the particles on each side of B are displaced towards it 6 7 ?.

When the displacement is represented by AH'BK'C the particles on each side of B are displaced from it, giving an extension, and since the slope is again the steepest, the extension is a maximum.

At the loops, for instance at H, the displacement is a maximum.

The tangent to the displacement curve is always parallel to the axis, that is, for a small distance the successive particles are always equally displaced, and therefore always occupy the same volume.

But since y=yl+y2, Tdy/dx=Tdy/dx+Tdy 2 /dx, or the condition for superposition holds when the displacement is so small that we may put dx/ds = I.

But if y is the displacement at A, dy/dx is the extension at A, and the force acting is a pull across A equal to Y&uodyldx, where Y is Young's modulus of elasticity.

Let us suppose that the rod is circular, of radius r, and that the radial displacement of the surface is r t.

Formerly it was generally supposed that the Tartini tone was due to the beats themselves, that the mere variation in the amplitude was equivalent, as far as the ear is concerned, to a superposition on the two original tones of a smooth sine displacement of the same periodicity as that variation.

It depends on the restoring force due to the displacement of the receiver not being accurately proportional to the displacement.

We may see how this occurs by supposing that the restoring force of the receiving mechanism is represented by Ax- f-µx 2, where x is the displacement and µx 2 is very small.

It is easily shown that after a time we shall have to superpose on the original displacement a displacement proportional to the square of the particle velocity, and this will introduce just the same set of combination tones.

The displacement of each pontoon is 180 tons and its weight 22 tons.

Before 1868 Maxwell conducted the experiment by sending light from the illuminated cross-wires of an observing telescope forward through the object-glass, and through a train of prisms, and then reflecting it back along the same path; any influence of convection would conspire in altering both refractions, but yet no displacement of the image depending on the earth's motion was detected.

But in a great number of cases the imposition of a duty causes only a partial displacement of the foreign supply, and hence brings some revenue from that which remains.

The great warming and abundant rainfall of the island regions of the western Pacific, and the low temperature of the surface water in the east, cause a displacement of the southern tropical maximum of pressure to the east; hence we have a permanent " South Pacific anticyclone " close to the coast of South America.

This magnetic field may be made to cause a displacement 0 FIG.

This peculiar feature is explained as the result of displacement of the river from a better graded preglacial valley by the Pleistocene ice-sheet, which here overspread the plains from the moderately elevated Canadian highlands far on the north-east, instead of from the much higher mountains near by on the west.

These cliffs are peculiar in gradually passing from one formation to another, and in having a height dependent on the displacement of the fault rather than on the structures in the fault face; they are already somewhat battered and dissected by erosion.

The displacement of the mountain block may still be in progress, for severe earthquakes have happened in the depression next east of the range; that of Owens Valley in 1870 was strong enough to have been very destructive had there been anything in the desert valley to destroy.