When it is desired to have a uniform magnet with definitely situated poles, it it usual to employ one having the form of an ovoid, or elongated ellipsoid of revolution, instead of a rectangular or cylindrical bar.
It is built on the usual rectangular plan and the streets are wide and well paved.
The distribution of magnetism and the position of the poles in magnets of other shapes, such as cylindrical or rectangular bars, cannot be specified by any general statement, though approximate determinations may be obtained experimentally in individual cases.'
They consist of a long rectangular building, with a proscenium or column front which almost forms a tangent to the circle of the orchestra; at the middle and at either end of this proscenium are doors leading into the orchestra, those at the end set in projecting wings; the top of the proscenium is approached by a ramp, of which the lower part is still preserved, running parallel to the parodi, but sloping up as they slope down.
The site, surrounded by ravines and accessible only on the W., is naturally strong and characteristic of an Etruscan town; on this side there is a considerable fragment of the ancient Etruscan wall, built of rectangular blocks of tufa (whether the rest of the site was protected by walls is uncertain), and a ruined castle, erected by Antonio da Sangallo the elder in 1499, for Pope Alexander VI., and restored by Pope .Paul III.
To convert the masticated rubber into rectangular blocks, it is first softened by heat, and then forced into iron boxes or moulds.
In this magnetic field is pivoted a small circular or rectangular coil carried in jewelled bearings, the current being passed into and out of the movable coil by fine flexible conductors.
Brazil's chief industrial importance is due to its situation in the heart of the "Brazil block" coal (so named because it naturally breaks into almost perfect rectangular blocks) and clay and shale region; among its manufactures are mining machinery and tools, boilers, paving and enamelled building bricks, hollow bricks, tiles, conduits, sewer-pipe and pottery.
It consists of five rectangular compartments, three on one side of the corridor FIG.
Orthogonal System.-In particular, if we consider the transformation from one pair of rectangular axes to another pair of rectangular axes we obtain an orthogonal system which we will now briefly inquire into.
The sample, arranged as a bundle of rectangular strips, is caused to rotate about a central horizontal axis between the poles of an upright C-shaped magnet, which is supported near 'its middle upon knife-edges in such a manner that it can oscillate about an axis in a line with that about which the specimen rotates; the lower side of the magnet is weighted, to give it some stability.
If the errors of the rectangular co-ordinates of these lines are known, the problem of determining the co-ordinates of any star-image on the plate becomes reduced to the comparatively simple one of interpolating the co-ordinates of the star relative to the sides of the 5 mm.
The geometry of the rectangular hyperbola is simplified by the fact that its principal axes are equal.
The magnet between the poles of which the rectangular signal coil moves is built up of a number of thin flat horseshoe-shaped permanent magnets of a special quality of steel, and is provided with adjustable pole pieces.
Portion, overlooking the sea, which was the acropolis, is surrounded by fine walls of masonry of rectangular blocks of stone, which show traces of the reconstruction of 408 B.C. It is traversed by two main streets, running N.
Such metal plates, or " tie-plates," have come into considerable use also in the United States, where they are always made of rolled steel, punched with rectangular holes through which the spikes pass.
This may be rectangular in shape (" straight " shed), containing a series of parallel tracks on which the engines stand and which are reached by means of points and crossings diverging from a main track outside; or it may take a polygonal or circular form (round house or rotunda), the lines for the engines radiating from a turn-table which occupies the centre and can be rotated so as to serve any of the radiating lines.
The plan consists of a large rectangular nave, with semicircular recesses for altars, opening out of the aisles, north and south.
Between the Gulf of Mexico and Caribbean Sea in nearly rectangular form for about 280 m., with about the same extreme width in longitude.
The peculiarity of Venetian domestic Gothic to which we have referred is this: we frequently find tracery used to fill rectangular, not arched, openings.
The finest residence streets are in the Back Bay, which is laid out, in sharp contrast with the older quarters, in a regular, rectangular arrangement.
That it is the first positive pedal of a rectangular hyperbola with regard to the centre.
The same name is also given to the first positive pedal of any central conic. When the conic is a rectangular hyperbola, the curve is the lemniscate of Bernoulli previously described.
This apparatus has an oil-cup consisting of a cylindrical brass or gunmetal vessel, the cover of which is provided with three rectangular holes which may be closed and opened by means of a perforated slide moving in grooves; the movement of the slide causes a small oscillating colzaor rape-oil lamp to be tilted so that the flame (of specified size) is brought just below the surface of the lid.
The frames into which hard soaps are ladled for cooling and solidification consist of rectangular boxes made of iron plates and bound and clamped together in a way that allows the sides to be removed when required; wooden frames are used in the case of mottled soaps.
Here was found a rectangular structure resembling a temple, but with a side door to the north; it possessed a portico of six columns.
Between this outlet and the Dipylon were found a boundary-stone, inscribed Epos Kepaµ€LKou, which remains in its place, and the foundations of a large rectangular building, possibly the Pompeium, which may have been a robing-room for the processions which passed this way.
Adjoining it to the east are the remains of a large rectangular building, which was apparently fronted by a colonnade; this has been identified with the XaXKO011Ki, a storehouse of bronze implements and arms, which was formerly supposed to lie against the north wall near the Propylaea.
The oldest stage-building was erected in the time of Lycurgus; it consisted of a rectangular hall with square projections (1rapauKs vca) on either side; in As= front of this was built in late Greek or early Roman times a stage with a row of columns which intruded upon the orchestra space; a later and larger stage, dating from the time of Nero, advanced still farther into the orchestra, and this was finally faced (probably in the 3rd century A.D.) by the " bema " of Phaedrus, a platform-wall decorated with earlier reliefs, the slabs of which were cut down to suit their new position.
In diameter, with six engaged Corinthian columns and a sculptured frieze, standing on a rectangular base of Peiraic stone.
It consisted of a large open rectangular space surrounded by an Ionic colonnade into which opened a number of shops or storehouses.
Thick, through which is cut a rectangular opening to receive the two magnetizing coils B B.
The standard rod and the test specimen, which must be of the same dimensions, are placed side by side within two magnetizing coils, and each pair of adjacent ends is joined by a short rectangular block or " yoke " of soft iron.
Square, usually rectangular, though sometimes, circular or FIG.
64) was the first to fix the site upon the low hill, surrounded by tufa cliffs, on which were still scanty remains of walling in rectangular blocks of the same material, which is now occupied by the farm-house of Conca.
It was rebuilt on a rectangular plan and possesses several buildings of note.
The 26 special maps are drawn on a rectangular projection.
An oblong rectangular, a circular and an oval type, the latter being either FIG.
The authors of rectangular maps look upon the Tabernacle as an image of the world at large, and believe that such expressions as the " four corners of the earth " (Isa.
12), could be reconciled only with a rectangular world.
The oldest rectangular map of the world is contained in a most valuable work written by Cosmas, an Alexandrian monk, surnamed Indicopleustes, after returning from a voyage to India (535 A.D.), and entitled Christian Topography.
Similar maps illustrating the Commentaries exist at St Sever (1050), Paris (1203), and Tunis; others are rectangular, the oldest being in Lord Ashburnham's library (970).