Word Finder - needle

definition

A fine, sharp implement usually for piercing such as sewing, or knitting, acupuncture, tattooing, body piercing, medical injections, etc.

example

The seamstress threaded the needle to sew on a button.

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Any slender, pointed object resembling a needle, such as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc.

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A fine measurement indicator on a dial or graph, e.g. a compass needle.

example

The needle on the fuel gauge pointed to empty.

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A sensor for playing phonograph records, a phonograph stylus.

example

Ziggy bought some diamond needles for his hi-fi phonograph.

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A needle-like leaf found on some conifers.

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A strong beam resting on props, used as a temporary support during building repairs.

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(usually preceded by the) The death penalty carried out by lethal injection.

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A text string that is searched for within another string. (see: needle in a haystack)

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To pierce with a needle, especially for sewing or acupuncture.

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To tease in order to provoke; to poke fun at.

example

Billy needled his sister incessantly about her pimples.

definition

To form, or be formed, in the shape of a needle.

example

to needle crystals

Katie glanced up, the needle pausing in mid air.

A nurse walked in with a needle and after that she fell asleep again.

I feel more like a ship's sailor in a storm, with shredded sails with someone handing me a needle and thread.

She looked away and fumbled with the needle and thread she'd found in a sewing kit.

The galvanometer being so adjusted that a current of definite strength through one of the coils gives a definite deflection of the needle, the amount of leakage expressed in terms of the insulation resistance of the wires is given by the formula.

I wanted to ask questions but a medic stuck a needle in my arm.

The poles of a piece of magnetized steel may be at once distinguished if the two ends are successively presented to the compass; that end which attracts the south pole of the compass needle (and is therefore north) may be marked for easy identification.

The needle was smaller than she remembered needles being, and she steadied her breathing before plunging it into his arm.

If then the torsion head is provided with an index needle, and also if the movable coil is provided with an indicating point, it is possible to measure the torsional angle through which the head must be twisted to bring the movable coil back to its zero position.

All the mountains offer easy routes to pedestrians, but some of them, as Scafell, Pillar, Gable (Napes Needle), Pavey Ark above Langdale and Dow Crags near Coniston, also afford ascents for experienced climbers.

A small needle is inserted through the drop to prick the skin below.

This can be more easily shown if the compass is replaced by a magnetized knitting needle, supported horizontally by a thread.

The north pole of the bar-magnet will repel the north pole of the suspended needle, and there will likewise be repulsion between the two south poles.

In Sciadopitys similar spurs occur, each bearing a single needle, which in its grooved surface and in the possession of a double vascular bundle bears traces of an origin from two needle-leaves.

Every little pine needle expanded and swelled with sympathy and befriended me.

With a heavy needle, use thread or fishing line to make hangers.

Never use a pin, needle, or other sharp object to clean the crevice - it could scratch and damage the ring in a very difficult to repair area.

The only pain involved is a momentary pinprick from the needle, and results from the test are usually available in one to two days.

If the cardboard scale upon which the beam of light is reflected by the magnetometer mirror is a flat one, the deflections as indicated by the movement of the spot of light are related to the actual deflections of the needle in the ratio of tan 20 to 0.

C is a " compensating coil " consisting of a few turns of wire through which the magnetizing current passes; it serves to neutralize the effect produced upon the magnetometer by the magnetizing coil, and its distance from the magnetometer is so adjusted that when the circuit is closed, no ferromagnetic metal being inside the magnetizing coil, the ti, magnetometer needle undergoes no deflection.

The wire is supported inside the glass tube A with its upper pole at the same height as the magnetometer needle.

Under the influence of the transient current, the galvanometer needle undergoes a momentary deflection, or " throw," which is proportional to Q, and therefore to 8B, and thus, if we know the deflection produced by the discharge through the galvanometer of a given quantity of electricity, we have the means of determining the value of 8B.

Suppose the switches to be adjusted so that the effective number of turns in the variable coil is loo; the magnetizing forces in the two coils will then be equal, and if the test rod is of the same quality as the standard, the flow of induction will be confined entirely to the iron circuit, the two yokes will be at the same magnetic potential, and the compass needle will not be affected.

If, however, the permeability of the test rod differs from that of the standard, the number of lines of induction flowing in opposite directions through the two rods will differ, and the excess will flow from one yoke to the other, partly through the air, and partly along the path provided by the bent bars, deflecting the compass needle.

But a balance may still be obtained by altering the effective number of turns in the test coil, and thus increasing or decreasing the magnetizing force acting on the test rod, till the induction in the two rods is the same, a condition which is fulfilled when reversal of the current has no effect on the compass needle.

Experiments with annealed iron gave less satisfactory results, on account of the slowness with which the metal settled down into a new magnetic state, thus causing a " drift " of the magnetometer needle, which sometimes persisted for several seconds.

Hall Efect.-If an electric current is passed along a strip of thin metal, and the two points at opposite ends of an equipotential line are connected with a galvanometer, its needle will of course not be deflected.

The needles of the primitive compasses, being made of iron, would require frequent re-magnetization, and a " stone " for the purpose of " touching the needle " was therefore generally included in the navigator's outfit.

C. Oersted (1777-1851) had shown that a magnetic needle is deflected by an electric current, he attempted, in the laboratory of the Royal Institution in the presence of Humphry Davy, to convert that deflection into a continuous rotation, and also to obtain the reciprocal effect of a current rotating round a magnet.

It is sufficient to look at wire gauze backed by the sky or by a flame, through a piece of blackened cardboard, pierced by a needle and held close to the eye.

In front of the naked eye was held a piece of copper foil perforated by a fine needle hole.

It was probably in Paris, the chief intellectual centre of his time, that Neckam heard how a ship, among its other stores, must have a needle placed above a magnet (the De utensilibus assumes a needle mounted on a pivot), which needle would revolve until its point looked north, and thus guide sailors in murky weather or on starless nights.

Cleopatra's Needle, an ancient Egyptian monument, was presented to the government by Mehemet Ali in 1819, brought from Alexandria in 1878, and erected on the Victoria embankment on a pedestal of grey granite.

It is not possible to enumerate here even the principal styles of ishime, but mention may be made of the zara-maki (broad-cast), in which the surface is finely but irregularly pitted after the manner of the face of a stone; the nashi-ji (pear-ground), in which we have a surface like the rind of a pear; the hari-ishime (needle ishime), where the indentations are so minute that they seem to have been made with the point of a needle; the gama-ishime, which is intended to imitate the skin of a toad; the tsuya-ishime, produced with a chisel sharpened so that its traces have a lustrous appearance; the ore-liuchi (broken-tool), a peculiar kind obtained with a jagged tool; and the gozam, which resembles the plaited surface of a fine straw mat.

Formerly the embroiderer was content to produce a pattern with his needle, now he paints a picture.

A simple method for condenser comparison is to charge the two condensers to the same voltage by a battery and then discharge them successively through a ballistic galvanometer and observe the respective " throws " or deflections of the coil or needle.

The products of the textile industry in America were bark cloth, wattling for walls, fences and weirs, paper, basketry, matting, loom products, needle or point work, net-work, lacework and embroidery.

Schwabach is the chief seat of the needle manufacture in Bavaria; its other industries include gold and silver wire work, brewing and the making of soap and earthenware.

These coils are placed with their axes at right angles to one another, and at the point where the axes intersect a small pivoted needle of soft iron is placed, carrying a longer index needle moving over a scale.

The small pivoted iron needle ns placed in their common field therefore takes up a certain position, dependent on the relative value of these fields.

The tangent of the angle of deflection 0 of this needle measured from its position, when the shunt coil is disconnected, is equal to the ratio of the voltage of the dynamo to the current through the insulator.

Hence the deflection of the needle is proportional to the insulation resistance, and the scale can be graduated to show directly this resistance in megohms.

The exact position of the core, and, therefore, of an index needle connected with it, is dependent on the ratio of the voltage applied to the terminals of the high resistance or insulator and the current passing through it, This, however, is a measure of the insulation-resistance.

The exact position taken up by the needle is therefore determined by the potential difference (P.D.) of the quadrants and the P.D.

In the space between them is suspended a "needle" which consists of a light aluminium axis, to which are affixed a number of paddle-shaped aluminium blades.

This needle is suspended by a fine platinum silver wire, and its normal position is such that the aluminium paddle blades are just outside the quadrantal-shaped plates.

This movement is resisted by the torsional elasticity of the suspending wire, and hence a fixed indicating needle attached to the movable system can be made to indicate directly on a scale, the difference of potential between the terminals of the instrument in volts.

For such purposes the whole of the working parts are contained in a metal case; the indicating needle moving over a divided scale which is calibrated to show directly the potential difference in volts of the terminals of the instrument.

As the frame has the same linear expansion as the wire, external changes of the temperature will not affect their relative length, but if the fine wire is heated by the passage of an electric current, its expansion will move the indicating needle over the scale, the motion being multiplied by the gear.

In the Hartmann and Braun form of hot-wire voltmeter, the fine wire is fixed between two supports, and the expansion produced when a current is passed through it causes the wire to sag down, the sag being multiplied by a gear and made to move an indicating needle over a scale.