Word Finder - arc

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That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.

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A continuous part of the circumference of a circle (circular arc) or of another curve.

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A curve, in general.

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A band contained within parallel curves, or something of that shape.

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(electrics) A flow of current across an insulating medium; especially a hot, luminous discharge between either two electrodes or as lightning.

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A story arc.

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A continuous mapping from a real interval (typically [0, 1]) into a space.

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A directed edge.

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The three-point line.

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An arclight.

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To move following a curved path.

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To shape into an arc; to hold in the form of an arc.

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To form an electrical arc.

An arc of lightning left her father's hand and slammed the stranger into the wall.

Holding out her arm, she was fascinated to see the rain arc to avoid it.

The shortest line joining any two points is an arc of a great circle.

Joan of Arc defeated the English here in 1429.

The quadratrix of Tschirnhausen is constructed by dividing the arc and radius of a quadrant in the same number of equal parts as before.

The value in terms of arc of the scale of the record can be obtained by measuring the distance between the magnet mirror and the recording drum, and in most observations it is such that a millimetre on the record represents one minute of arc. The time scale ordinarily employed is 15 mm.

In the process of the Badische Anilinand Soda-Fabrik, the arc, which is said to be 30 to 50 ft.

The Rankin process, of which very little is known, produces the arc with much lower current.

The Château du Milieu (1lth to 15th centuries) comprises the keep, the Pavillon de 1'Horloge and the Grand Logis, in the principal apartment of which the first meeting between Joan of Arc and Charles VII.

The military posts were drawn up in echelon along the frontier of the desert, especially along the southern slopes of the Aures, as far as Ad Majores (Besseriani), and on the Tripolitan frontier as far as Cydamus (Ghadames), forming an immense arc extending from Cyrenaica to Mauretania.

Between the two and at the highest point of the arc, so far as morphological differentiation is concerned, stands the scorpion; near to it in the trilobite's direction (that is, on the ascending side) are Limulus and the Eurypterines - with a long gap, due to obliteration of the record, separating them from the trilobite.

The strange nobody-crabs or Pycnogonids occupy a place on the ascending half of the arc below the Eurypterines and Limulus.

Under these circumstances the arc to be considered is bisected at 0, and its length is proportional to the width of the slit.

If the slit is of 'constant width and we require the illumination at various points on the screen behind it, we must regard the arc of the curve as of constant length.

If the slit be narrow, so that the arc is short, the intensity is constant over a wide range, and does not fall off to an important extent until the discrepancy of the extreme phases reaches about a quarter of a period.

The toga was a piece of woollen cloth in the form of a segment of a circle, 2 the chord of the arc being about three times the height of the wearer, and the height a little less than one-half of this length.

This will be evident if we consider that, since radii vectores of the hodograph represent velocities in the orbit, the elementary arc between two consecutive radii vectores of the hodograph represents the velocity which must be compounded with the velocity of the moving point at the beginning of any short interval of time to get the velocity at the end of that interval, that is to say, represents the change of velocity for that interval.

Hence the elementary arc divided by the element of time is the rate of change of velocity of the moving-point, or in other words, the velocity in the hodograph is the acceleration in the orbit.

The cartesian equation referred to the axis and directrix is y=c cosh (x/c) or y = Zc(e x / c +e x / c); other forms are s = c sinh (x/c) and y 2 =c 2 -1-s 2, being the arc measured from the vertex; the intrinsic equation is s = c tan The radius of curvature and normal are each equal to c sec t '.

Radii are drawn from the centre of the quadrant to the points of division of the arc, and these radii are intersected by the lines drawn parallel to BC and through the corresponding points on the radius AB.

Johnson in England Arc appear, in 1853, to have introduced the earliest practical form of furnace.

When used for ore smelting, the reduced metal and the accompanying slag were to be caught, after leaving the arc and while still liquid, in a hearth fired with ordinary fuel.

At once the attractive force of the solenoid on the iron cylinder was automatically reduced, and the falling of the latter caused the negative carbon to rise, starting an arc between it and the metal in the crucible.

A counterpoise was placed on the solenoid end of the balance beam to act against the attraction of the solenoid, the position of the counterpoise determining the length of the arc in the crucible.

Any change in the resistance of the arc, either by lengthening, due to the sinking of the charge in the crucible, or by the burning of the carbon, affected the proportion of current flowing in the two shunt circuits, and so altered the position of the iron cylinder in the solenoid that the length of arc was, within limits, automatically regulated.

Were it not for the use of some such device the arc would be liable to constant fluctuation and to frequent extinction.

In the latter case the crucible, which was placed in the cavity immediately beneath the arc, was about 3 in.

He also arranged an experimental tubefurnace by passing a carbon tube horizontally beneath the arc ' Cf.

The temperature of the electric furnace, whether of the arc or incandescence type, is practically limited to that at which the least easily vaporized material available for electrodes is converted into vapour.

The arc furnaces now widely used in the manufacture of calcium carbide on a large scale are chiefly developments of the Siemens furnace.

Godin, a member of the French commission for measuring an arc of the meridian near Quito, became professor of mathematics at San Marcos in 1750; and the botanical expeditions sent out from Spain gave further zest to scientific research.

As the meteors have been numerously visible in five or six successive years it follows they must be pretty densely distributed along a considerable arc of their orbit.

There arc also remains of a well-preserved Roman theatre, close to the left bank of the river.

There arc four narrow avenues connecting this remarkable body of water with the Pacific and the Japan Sea; that on the west, called Shirnonoseki Strait, has a width of 3000 yds., that on the south, known ai Hayarnoto Strait, is 8 m.

On the south is the arc of the Luchu islands, which penetrates into Kill Shill.

Iii the centre there is the arc of the Izu-no-Shichito islands, which is continued into Hondo along the Fossa Magna.

In North Hondo the great Bandai arc forms the axis of the island and stretches into Yezo (HokkaidO).

The ordinary colloquial differs materially from its polite form, and both arc as unlike the written form as modern Italian is unlike ancient Latin.

Suess pointed out that it was surrounded by a curved line of earth-fracture, following an arc drawn from a centre in the Lipari Islands, from Catanzaro to Etna, and so westward; within this arc he held that the crust of the earth is gradually sinking, and is in an unstable condition.

Thus if the ellipsoid is one of revolution, and ds is an element of arc which sweeps out the element of surface dS, we have dS = 27ryds = 27rydx/ (Ts) = 27rydx/ (b y) = 2 p2 dx.

In order that no other settlements should encroach upon his centre of government, New Castle, the northern boundary was determined by drawing an arc of a circle, 12 m.

The differences of the readings of the screw, when converted into arc, afford the means of measuring the variations of the sun's apparent diameter.

The screw, turned by the wheels at g', acts in a toothed arc, whence, as shown in the figure, equal and opposite motion is communicated to the slides by the jointed rods v, v.

Acetylene is readily decomposed by heat, polymerizing under its influence to form an enormous number of organic of compounds; indeed the gas, which can itself be directly prepared from its constituents, carbon and hydrogen, under the influence of the electric arc, can be made the startingpoint for the construction of an enormous number of different organic compounds of a complex character.

The arc is struck in a crucible into which the mixture is allowed to flow, partially filling it.

An ingot gradually builds up from the bottom of the crucible, the carbon electrode being raised from time to time automatically or by hand to suit the diminution of resistance due to the shortening of the arc by the rising ingot.

This takes place when in the manufacture of the carbide the material is kept too long in contact with the arc, since this overheating causes the dissociation of some of the calcium carbide and the solution of metallic calcium in the remainder.

The ratio p is given by e"` e, where e= 2.718; µ is the coefficient of friction and 0 the angle, measured in radians,, subtended by the arc of contact between the rope and the wheel.

But Landen's capital discovery is that of the theorem known by his name (obtained in its complete form in the memoir of 1775, and reproduced in the first volume of the Mathematical Memoirs) for the expression of the arc of an hyperbola in terms of two elliptic arcs.

Gilles de Laval, sire de Retz (1404-1440), the comrade-in-arms of Joan of Arc and marshal of France, gave himself over to the most revolting debauchery, and was strangled and burned at Nantes.