How to use Spiral in a sentence
She tucked the pencil in the spiral part of her tablet.
A spiral stairway leads from the base of this pedestal to the torch.
He looked up to see the boy standing above him, holding out a small spiral notebook.
F, Fixed coil; D, Movable coil; S, Spiral spring; T, Torsion head; MM, Mercury cups; I, Index needle.
Club-shaped hydranths with numerous tentacles, generally scattered irregularly, sometimes with a spiral arrangement, or in whorls (" verticillate ").Advertisement
These were very numerous, for the place was thickly inhabited, and a large group of the queer people clustered near, gazing sharply upon the strangers who had emerged from the long spiral stairway.
Shell spiral; four cephalic tentacles; eyes absent; two pedal appendages.
Shell largely chitinous, not spiral, its calcareous apex projecting through a small hole in the mantle.
When a current is passed through the coil it rotates in the field and displaces the index over the scale against the control of a spiral spring like the hairspring of a watch.
This second coil is suspended by a number of silk fibres, and to the coil is also attached a spiral spring the other end of which is fastened to a torsion head.Advertisement
In Paludina the whorls of the spiral are very prominent; the genus is viviparous.
The space a must allow for the inclusion of a copper spiral if the substance contains nitrogen, and a silver spiral if halogens be present, for otherwise nitrogen oxides and the halogens may be condensed in the absorption apparatus; b contains copper oxide; c is a space for the insertion of a porcelain or platinum boat containing a weighed quantity of the substance; d is a copper spiral.
After having previously roasted the tube and copper oxide, and reduced the copper spiral a, the weighed calcium chloride tube and potash bulbs are put in position, the boat containing the substance is inserted (in the case of a difficultly combustible substance it is desirable to mix it with cupric oxide or lead chromate), the copper spiral (d) replaced, and the air and oxygen supply connected up. The apparatus is then tested for leaks.
If all the connexions are sound, the copper oxide is gradually heated from the end a, the gas-jets under the spiral d are lighted, and a slow current of oxygen is passed through the tube.
The magnesite (a) serves for the generation of carbon dioxide which clears the tube of air before the compound (mixed with fine copper oxide (b)) is burned, and afterwards sweeps the liberated nitrogen into the receiving vessel (e), which contains a strong potash solution; c is coarse copper oxide; and d a reduced copper gauze spiral, heated in order to decompose any nitrogen oxides.Advertisement
The steady downward spiral of snowflakes was mesmerizing, peaceful.
The paper cables consist of a number of wires, each enveloped in a loose covering of well-dried paper, and loosely laid up together with a slight spiral " lay " in a bundle, the whole being enclosed in a stout lead pipe.
The apex in this case will describe a circle, or rather a spiral, as it is elongating all the time, pointing to all points of the compass in succession.
It is thickened more in some places than in others, and thus are formed the spiral, annular and other markings, as well as the pits which occur on various cells and vessels.
This body has been called a blepharoplast, and in the Pteridophytes, Cycads and Ginkgo it gives rise to the spiral band on which the cilia are formed.Advertisement
Internally they are found to consist of a lamina twisted upon itself, and externally they generally exhibit a tortuous structure, produced, before the cloaca was reached, by the spiral valve of a compressed small intestine (as in skates, sharks and dog-fishes); the surface shows also vascular impressions and corrugations due to the same cause.
Cuculus canorus and trogons, is often lined with the broken-off hairs of these caterpillars, which, penetrating the cuticle, assume a regular spiral arrangement, due to the rotatory motion of the muscles of the gizzard.
At the present day when the nebulae that are spiral in form have been shown to be so numerous, next to the fixed stars themselves, our view of the nebular theory has been somewhat modified.
They derive this moisture from the air by means of aerial roots, developed from the stem and bearing an outer spongy structure, or velamen, consisting of empty cells kept open by spiral thickenings in the wall; this sponge-like tissue absorbs dew and rain and condenses the moisture of the air and passes it on to the internal tissues.
In a dextral Gastropod the shell is coiled in a right-handed spiral from apex to mouth, and the spiral also projects to the right of the median plane of the animal.Advertisement
When the shell is sinistral the asymmetry of the organs is usually reversed, and there is a complete situs inversus viscerum, the direction of the spiral of the shell corresponding to the position of the organs of the body.
He is credited with the invention of the anchor escapement for clocks, and also with the application of spiral springs to the balances of watches, together with the explanation of their action by the principle Ut tensio sic vis (1676).
In England the word "snail" in popular language is associated with Gasteropods which inhabit land or fresh water, and which possess large conspicuous spiral shells; terrestrial Gasteropods, in which the shell is rudimentary and concealed, are distinguished as "slugs."
The V-system is the oldest, but is being largely superseded by the herring-bone; the spiral system is more recent and is still on trial.
Others have arranged a means of obtaining high conductivity wire from cathode-copper without fusion, by depositing the metal in the form of a spiral strip on a cylinder, the strip being subsequently drawn down in the usual way; at present, however, the ordinary methods of wire production are found to be cheaper.Advertisement
Dorsal valve, showing calcareous spiral coils.
A wire carrying an electric current is surrounded by a magnetic field, and if the wire is bent into the form of an elongated coil or spiral, a field having certain very useful qualities is generated in the interior.
A little instrument, supplied by Hartmann and Braun, contains a short length of fine bismuth wire wound into a flat double spiral, half an inch or thereabouts in diameter, and attached to a long ebonite handle.
Unfortunately the effects of magnetization upon the specific resistance of bismuth vary enormously with changes of temperature; it is therefore necessary to take two readings of the resistance, one when the spiral is in the magnetic field, the other when it is outside.
An oblong coil about an inch in length is suspended from each end by thin strips of rolled German silver wire, one of which is connected with a spiral spring for regulating the tension, the other being attached to a torsion-head.Advertisement
The wire is subject to two superposed magnetizations, the one longitudinal, the other circular, due to the current traversing the wire; the resultant magnetization is consequently in the direction of a screw or spiral round the wire, which will be right-handed or left-handed according as the relation between the two magnetizations is right-handed or left-handed; the magnetic expansion or contraction of the metal along the spiral lines of magnetization produces the Wiedemann twist.
Iron (moderately magnetized) expands along the lines of magnetization, and therefore for a right-handed spiral exhibits a right-handed twist.
Of these by far the most remarkable is the Scott monument in East Princes Street Gardens, designed by George Meikle Kemp (1795-1844); it is in the form of a spiral Gothic cross with a central canopy beneath which is a seated statue of Scott with his dog " Maida " at his side, by Sir John Steell, the niches being occupied by characters in Sir Walter's writings.
The origin of co-ordinates 0 corresponds to v = 0; and the asymptotic points J, J', round which the curve revolves in an ever-closing spiral, correspond to v= =co .
The distinctive feature is the spiral arrangement of the garment,the body being wrapped to a greater or less extent with a bandage of varying length in more or less parallel stripes.Advertisement
Quite distinct from the spiral is the old Babylonian cloak, which was thrown over the left shoulder, passed under the right 1 See e.g.
During excavations in Broad Street in 1874 many fragments of glass were found.; amongst them were part of a wine-glass, a square scent-bottle and a wine-glass stem containing a spiral thread of white enamel.
For example, a pair of equal opposite vortices, moving on a line parallel to a plane boundary, will have a corresponding pair of images, forming a rectangle of vortices, and the path of a vortex will be the Cotes' spiral r sin 20 = 2a, or x-2+y-2=a-2; (io) this is therefore the path of a single vortex in a right-angled corner; and generally.
They are weighed and then dumped into a washing machine, consisting of a large horizontal cage, submerged in water, in which revolves a horizontal shaft carrying arms. The arms are set in a spiral form, so that in revolving they not only stir the roots, causing them to rub against each other, but also force them forward from the receiving end,of the cage to the other end.
This elaborate type of scolex appears to be an adaptation to grasp the spiral intestinal valve of sharks and rays.Advertisement
In the males the horns are usually compressed and triangular, with transverse ridges or knobs, and either curving backwards or spiral.
The cigar is then rolled in the hand to consolidate the tobacco and bring it into proper shape, after which it is wrapped in the outer cover, a shaped piece made to enclose the whole in a spiral manner, beginning at the thick end of the cigar and working down to the pointed end, where it is dexterously finished by twisting to a fine point between the fingers.
The twist of the horns varies to a great extent locally, the spiral being most open and corkscrew-like in the typical Astor animal, and closest and most screw-like in the race (C. falconeri jerdoni) inhabiting the Suleiman and adjacent ranges.
For more efficient condensation - and also for shortening the apparatus - the central tube may be flattened, bent into a succession of V's, or twisted into a spiral form, the object in each case being to increase the condensing surface.
Of other common types of condenser, we may notice the "spiral" or "worm" type, which consists of a glass, copper or tin worm enclosed in a vessel in which water circulates; and the ball condenser, which consists of two concentric spheres, the vapour passing through the inner sphere and water circulating in the space between this and the outer (in another form the vapour circulates in a shell, on the outside and inside of which water circulates).Advertisement
Of the third type is the Warren column consisting of a spiral kept at a constant temperature by a liquid bath.
The lower (or modern) town is connected by a curious spiral street with the upper (or old) town.
The science of mechanics might perhaps suggest a means, namely, a strong spiral spring.
It has been shown that this behaviour of dielectrics can be imitated by a mechanical model consisting of a series of perforated pistons placed in a tube of oil with spiral springs between each piston.
Both sexes carry horns, which are ringed and form an open spiral.
They are fleshy shrubs, with rounded, woody stems, and numerous succulent branches, composed in most of the species of separate joints or parts, which are much compressed, often elliptic or suborbicular, dotted over in spiral lines with small, fleshy, caducous leaves, in the axils of which are placed the areoles or tufts of barbed or hooked spines of two forms. The flowers are mostly yellow or reddish-yellow, and are succeeded by pear-shaped or egg-shaped fruits, having a broad scar at the top, furnished on their soft, fleshy rind with tufts of small spines.
In his investigations respecting cycloidal lines and various spiral curves, his attention was directed to the loxodromic and logarithmic spirals, in the last of which he took particular interest from its remarkable property of reproducing itself under a variety of conditions.
Like another Archimedes, he requested that the logarithmic spiral should be engraven on his tombstone, with these words, Eadem mutata resurgo.
In the interior the sculptured triforium (15th century), the spiral staircase in the transept and a Holy Sepulchre are of interest.
The brine is cooled in a tank filled with spiral pipes, in which anhydrous ammonia, previously liquefied by compression, is vaporized in vacuo at the atmospheric temperature by the sensible heat of the returncurrent of brine, whose temperature has been slightly raised in its passage through the circulating tubes.
By the use of the spiral guide casing and the chimney the velocity of the effluent air is gradually FIG.
The same thing can be effected in a more perfect manner by the use of spiral or scroll drums, in which the rope is made to coil in a spiral groove upon the surface of the drum, which is formed by the frusta of two obtuse cones placed with their smaller diameters outwards.
Webb to measure the tractive resistance of trains on the London & North-Western railway, a tractive pull or push compresses two spiral springs by a definite amount, which is recorded to scale by a pencil on a sheet of paper, drawn continuously from a storage drum at the rate of 3 in.
Such a mass of imaginary matter as we are now considering may be compared to a collection of heavy particles held in position relatively to one another by a system of light spiral springs, one spring being supposed to connect each pair of adjacent particles.
The king bird of paradise (Cicinnurus regius) is one of the smallest and most brilliant of the group, and is specially distinguished by its two middle tail feathers, the ends of which alone are webbed, and coiled into a beautiful spiral disk of a lovely emerald green.
The harnessed antelopes, or bushbucks, are closely allied to the kudus, from which they chiefly differ by the spiral formed by the horns generally having fewer turns.
In the addax (Addax nasomaculatus), which is a distinct species common to North Africa and Syria, the ringed horns form an open spiral ascending in the plane of the face, and there is long, shaggy, dark hair on the fore-quarters in winter.
Another illustration is afforded by a long spiral of wire with coils, say 2 in.
According to Heron and Geminus they were discussed under the name spire by Perseus (c. 200-100 B.C.), their sections were termed spiral sections, and are probably the same as the hippopede of Eudoxus.
The doorway was flanked with columns of alabaster, with rich spiral ornament, now in the British Museum; and the rest of the facade was very richly decorated, as may be seen from Chipiez's fine restoration.
On the ground that after the virtues of courage and valour and fearlessness have been taught in the lower stages of evolution, the virtue of gentle humane ness and extended sympathy for all that can suffer should be taught in the higher cycles of the evolutionary spiral.
In the centre of the tomb are two vaulted chambers, reached by a spiral passage or gallery 62 ft.
The movable coil of the wattmeter is normally suspended so that its axis is at right angles to that of the fixed coil, and is constrained by the torsion of a spiral spring.
When the currents flow through the two coils, forces are brought into action compelling the coils to set their axes in the same direction, and these forces can be opposed by another torque due to the control of a spiral spring regulated by moving a torsion head on the instrument.
It is true that many tame goats show spirally twisted horns recalling those of the under-mentioned Asiatic markhor; but in nearly all such instances it will be found that the spiral twists in the opposite direction.
The horns are somewhat erect and spiral, with an outward bend.
The horns of the male differ from those of the female, being directed vertically and in shape spiral, whilst in the female they have a horizontal tendency, somewhat like those of a ram.
The horns are very erect, and sometimes slightly spiral, inclining inwards and to such an extent in some cases as to cross.
The horns, however, are more spiral.
This motion is resisted by the torsion of a spiral spring resembling the hair-spring of a watch having one end fixed to the coil axis, and there is therefore a definite position of the needle on the scale corresponding to each potential difference between the terminals, provided it is within the range of the control.
Caprinidae.-Shell inequivalve; fixed valve spiral or conical; free valve coiled or spiral; Cretaceous.
Monopleuridae.-Shell very inequivalve; fixed valve conical or spiral; free valve operculiform; Cretaceous.
Thomson 6 places spherical bulbs inside thick spiral conductors through which the oscillating discharge of a powerful battery is led.
Its characteristics were a flamboyant and fantastic treatment of plant and animal (though not of human) forms, a free use of the geometrical device called the " returning spiral," and much skill in enamelling.
One way in which this has been secured is by obtaining the under cooling by temporary cooling of the air space by a spiral tube in which ether may be evaporated, the outer vessel being filled with ice in contact with a solution of equivalent concentration to that within.
In the case of a culvert the circumferential rods are sometimes laid continuously in the form of a spiral as in the Bordenave system.
It is ascended by a broad inclined spiral way, up which Peter the Great is said to have driven in a carriage and four.
In a regularlyformed straight branch covered with leaves, if a thread is passed from one to the other, turning always in the same direction, a spiral is described, and a certain number of leaves and of complete turns occur before reaching the leaf directly above that from which the enumeration commenced.
If this arrangement is expressed by a fraction, the numerator of which indicates the number of turns, and the denominator the number of internodes in the spiral cycle, the fraction will be found to represent the angle of divergence of the consecutive leaves on the axis.
But the divergence between leaf and leaf 2 is equal to tths of the circumference, and the same is the case between 2 and 3, 3 and 4, &c. The divergence, then, is and from this we learn that, starting from any leaf on the axis, we must pass twice round the stem in a spiral through five leaves before reaching one directly over that with which we started.
The; line which, winding round an axis either to the right or to the left, passes through the points of insertion of all the leaves on the axis is termed the genetic or generating spiral; and that margin of each leaf which is towards the direction from which the spiral proceeds is the kathodic side, the other margin facing the point whither the spiral passes being the anodic side.
In cases where the internodes are very short and the leaves are closely applied to each other, as in the house-leek, it is difficult to trace the generating spiral.
Cherry with six leaves, the sixth The spiral is not always conbeing placed vertically over the stant throughout the whole first, after two turns of the spiral.
This change showing the points of insertion can brought about by arrest of the leaves and their spiral development, by increased development of individual parts or by a torsion of the axis.
In the bud of the screw-pine the leaves are arranged in three orthostichies with the phyllotaxis but by torsion the developed leaves become arranged in three strong spiral rows running round the stem.
The primitive or generating spiral may pass either from right to left or from left to right.
This arrangement often continues during the life of the plant, but at other times it changes, passing into distichous and spiral forms. Some tribes of plants are distinguished by their opposite or ver ticillate, others by their alternate, leaves.
The circles in the centre indicate a rectilinear series of indicate the five turns of the spiral, scales and two lateral secondand show the insertion of each of the ary spirals, one turning from leaves.
At other times they are at different levels, and are applied over each other, so as to be imbricated, as in lilac, and in the outer scales of sycamore; and occasionally the margin of one leaf overlaps that of another, while it in its turn is overlapped by a third, so as to be twisted, spiral or contortive.
The thread was secured by a spiral notch in the stick.
These were used to wind round glass vases, to form lips, handles, &c.; and to twist together for spiral patterns.
In Ulva and Mesocarpus the chromatophore is a single plate, which in the latter genus places its edge towards the incident light; in Spirogyra they are spiral bands embedded in the primordial utricle; in Zygnema they are a pair of stellate masses, the rays of which branch peripherally; in Oedogonium they are longitudinally-disposed anastomosing bands; in Desmids plates with irregular margins; in Cladophora polyhedral plates; in Vaucheria minute elliptical bodies occurring in immense numbers.
His spiral horns, twisted for three or four turns like a corkscrew, often reach the length of 30 in.
The heated products of combustion from the burner B impinge on a metal box H, through which water is circulating, and then pass downwards and outwards through a spiral cooler which reduces them practically to the atmospheric temperature.
Spiral nebulae have the remarkable characteristic of avoiding the galactic plane, and it has been suggested that the space outside the limits of the stellar universe is filled with them.
It does not, however, seem probable that their apparent anti-galactic tendency has such a significance; in the Magellanic Clouds spiral nebulae are very abundant, a fact which shows that there is no essential antipathy between the stars and the spiral nebulae.
In India the serpent-godlings are very often associated with water, and, even at the digging of a well,worship is paid to the ` ` world serpent," and the Salagrama (spiral ammonite), sacred to Vishnu, is solemnly wedded to the Tulasi or basil plant, representative of the garden which the pool will fertilize.
The vertical oscifiations of a weight which hangs from a fixed point by a spiral spring come under this case.
Tait that a similar representation of the type (30) is obtained if we replace the circle by an equiangular spiral described, with a constant angular velocity about the pole, in the direction of diminishing radius vector.
Again, in the equiangular spiral we have p =r sin a, and therefore P = u/ri, if u =hh/sinh a.
But since an equiangular spiral having a given pole is completely determined by a given point and a given tangent, this type of orbit is not a general one for the law of the inverse cube.
In order that the spiral may be described it is necessary that the velocity of projection should be adjusted to make h=iju.
If A or B vanish we have an equiangular spiral, and the velocity at infinity is zero.
The slightest frictional forcessuch as the resistance of the aireven if they act in lines through the centre of the rolling sphere, and so do not directly affect its angular momentum, will cause the centre gradually to descend in an ever-widening spiral path.
This it enters head-foremost from the rear, while "hermits" in general are forced to go backwards into their spiral or tapering shelters by the front.
Ampere had already previously shown that a spiral conductor or solenoid when traversed by an electric current possesses magnetic polarity, and that two such solenoids act upon one another when traversed by electric currents as if they were magnets.
On the return of the bar the platen is raised by a spiral spring, placed in a box and fixed at the head of the press.
The fibre passes between a series of fluted rollers, each pair of which is kept in contact by spiral springs as shown in the figure.
Curved and spiral forms. Any of the elongated forms described above may be curved or sinuous or twisted into a corkscrewlike spiral instead of straight.
If the sinuosity is slight we have the Vibrio form; if pronounced, and the spiral winding well marked, the forms are known as Spirillum, Spirochaete, &c. These and similar terms have been applied partly to individual cells, but more often to filaments consisting of several cells; and much confusion has arisen form the difficulty of defining the terms themselves.
In 1834 he continued and extended his researches "On the Influence of a Spiral Conductor in increasing the Intensity of Electricity from a Galvanic Arrangement of a Single Pair," a memoir of which was read before the American Philosophical Society on the 5th of February 1835.
In none of Leonardo's manuscripts, however, and in none of his figures, is the slightest hint given of his having any knowledge of the spiral movements made by the wing in flight or of the spiral structure of the wing itself.
The neurae are arranged at the axis of the wing after the manner of a fan or spiral stair - the anterior one occupying a higher position than that farther back, and so of the others.
In this case the wing, in virtue of its being carried forward by the body in motion, describes an undulating or spiral course, as shown in fig.
This twisting is in a great measure owing to the manner in which the bones of the wing are twisted upon themselves, and the spiral nature of their articular surfaces - the long axes of the joints always intersecting each other b FIG.
That this shape is intimately associated with flight is apparent from the fact that the rowing feathers of the wing of the bird are every one of them distinctly spiral in their nature; in fact, one entire rowing feather is equivalent - morphologically and physiologically - to one entire insect wing.
The movement of the bat's wing in extension is a spiral one, the spiral running alternately from below upwards and forwards and from above downwards and backwards.
After Pettigrew enunciated his views (1867) as to the screw configuration and elastic properties of natural wings, and more especially after his introduction of spiral, elastic artificial wings, and elastic screws, a great revolution took place in the construction of flying models.
An ingenious attempt has been made to prove, in the absence of records, that the famous spiral staircase at Blois was also of his designing.
This thread gives rise to a spiral ciliated band lying in a depression on the body of each spermatozoid; the large spermatozoids eventually escape from the pollen-tube, and are able to perform ciliary movements in the watery liquid which occurs between the thin papery remnant of nucellar tissue and the archegonial necks.
A leaf-trace, as it passes through the cortex, has a collateral structure, the protoxylem being situated at the inner edge of the xylem; when it reaches the leaf-base the position of the spiral tracheids is gradually altered, and the endarch arrangement (protoxylem internal) gives place to a mesarch structure (protoxylem more or less central and not on the edge of the xylem strand).
The roots of many conifers possess a narrow band of primary xylem-tracheids with a group of narrow spiral protoxylem-elements at each end (diarch).
In Taxus, Torreya (California and the Far East) and Cephalotaxus the absence of resin-canals and the presence of spiral thickeningbands on the tracheids constitute well-marked characteristics.
It may be prepared by passing hydrogen gas and bromine vapour through a tube containing a heated platinum spiral.
It is found that when a spiral spring is extended by a weight it has a tendency to turn a little round its axis.
To correct this tendency the spring is usually made half with right-hand spiral and half with lefthand spiral.
At each end of the drum casing is attached a vertical spiral spring, and by the extension of these springs the weighing of the goods is effected.
The horizontal bar which receives the pull of the load is connected at its ends with the two spiral springs and pulls verti - cally upon them.
These rods pass through holes in the front and back plates of the box, and are furnished with spiral springs, which (when the rods are forced back by hand) are in compression between the back plate of the box and shoulders on the rods.
Educated at Trinity College, Dublin, he was appointed in 1865 assistant to the Earl of Rosse's observatory at Parsonstown, and whilst there he discovered four spiral nebulae.
This self-guiding property may be explained by the tendency which a flat band has, when running upon a conical pulley in a direction normal to its axis, to describe a spiral path as it wraps on to the surface because of the lateral stiffness of the material; the advancing side therefore tends to rise towards the highest part of the cone.
They are directed outwards, and curve in an open spiral, with the tips directed outwards.
The spiral horns are low at the crown, with a clear space between the roots, and sweep in a wide curve, sloping slightly backwards, and clear of the cheek.
The outermost layer of the cell-wall of the ripe spore splits along spiral lines, giving rise to the elaters; these two long strips of wall, attached by their middle points to the spore, tend to straighten out in dry, and close round the spore in damp air.
The antheridia are deeply sunk in the tissue; the spermatozoids consist of a spiral of two or three coils, the numerous cilia being attached to the pointed anterior end.
In Sigillaria the latter form vertical rows, while in Lepidodendron the arrangement is a complicated spiral.
In these forms the chitinous lining of the tubes is thickened by a closeset spiral ridge similar to the spiral thickening of the cellulose wall of the spiral vessels of plants.
It is a noteworthy fact that other tubes in these same terrestrial Arthropoda - namely, the ducts of glands - are similarly strengthened by a chitinous cuticle, and that a spiral or annular thickening of the cuticle is developed in them also.
Tracheae are developed which are dendriform and with spiral thickening of their lining.
After pollination the female flower becomes drawn below the surface by the spiral contraction of the long stalk, and the fruit ripens near the bottom.
Skeat takes the ultimate root to be kar, to move, especially in a circular motion, seen in "curve," "circle," &c. The word "worm" is applied to many objects resembling the animals in having a spiral shape or motion, as the spiral thread of a screw, or the spiral pipe through which vapour is passed in distillation.
Reusch has shown that a packet of identical inactive plates arranged in spiral fashion gives an artificial active system, and the behaviour of certain pseudosymmetric crystals indicates a formation of this character.
In the Spanish ibex (C. pyrenaica) the horns fare flattened, with ill-defined knobs, and a spiral twist.
The Bad Lands and the Arikaree are famous fossil fields, the latter being the source of the Daemonelix, or " Devil's cork-screw," a large spiral fossil, apparently a lacustrine alga.
The tracheae are minute tubes exhibiting a faint transverse striation which is probably the indication of a spiral fibre.
In this case the axes are not arranged in two rows along one side of the false axis, but are placed at regular intervals, so as to form an elongated spiral round it.
Helicoid Cyme (axes forming a spiral).
In plants, as Nymphaea alba, where a spiral arrangement of the floral leaves occurs, it is not easy to say where the calyx ends and the corolla begins, as these two whorls pass insensibly into each other.
But in spiral flowers we have a different arrangement; thus the leaves of the calyx of Camellia japonica cover each other partially like tiles on a house.
In Convolvulaceae, while the corolla is twisted, and has its parts arranged in a circle, the calyx is imbricate, and exhibits a spiral arrangement.
The circular aestivation is generally associated with a regular calyx and corolla, while the spiral aestivations are connected with irregular as well as with regular forms.
The filament is generally continuous from one end to the other, but in some cases it is bent or jointed, becoming geniculate; at other times, as in the pellitory, it is spiral.
The body is bounded by a firm pellicle, often supplemented by an armour (" lorica ") of cuticular cellulose plates, with usually a marked longitudinal groove from which the anterior flagellum springs, and an oblique or spiral transverse groove for the second flagellum.
The stem is traversed by a single stele, with solid wood, without pith; the primary xylem is triangular in section, the spiral elements forming one or two groups at each angle, while the phloem occupied the bays, so that the structure resembles that of a triarch root.
The primary wood of Lepidodendron forms a continuous cylinder, not broken up into distinct bundles; its development was clearly centripetal, the spiral elements forming more or less prominent peripheral groups.
The leaf-traces, where they traverse the cortex, have the structure of the foliar bundles in Cycads, for they are of the collateral type, and their xylem is mesarch, the spiral elements lying in the interior of the ligneous strand.
The inflorescence is usually a spike bearing lateral cones or catkins, arranged sometimes distichously, sometimes in a spiral order.
Many of them were ones he had suggested â€“ like the size of the fireplace and replacing the stairs with a spiral staircase.
Our Galaxy has spiral arms in its disk - these spiral arms are regions of active star formation.
For the rest of the 1950s, Regent sold a single spiral bound Atlas of Great Britain at 10 miles to the inch.
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Because there is not spiral angle and no additional developed thrust these gears can be used as direct replacements for straight bevel gears.
Fortunately I had already ordered three sets of these spiral bevels to be cut from the blanks I supplied.
Among the spiral arms are bright, luminous, slightly pink blobs.
In the Coolidge tube, the bulb could be completely evacuated and electrons were liberated from a heated spiral cathode.
The ham and cheese rolled inside these flattened chicken breasts make an attractive spiral pattern when the chicken is sliced.
But alcohol and drugs can be very useful accomplices for depression, with their physiologically depressant effects giving a boost to the depression spiral.
The cochlea consists of a spiral canal, set in bone and filled with a fluid called endolymph.
Deflation effectively made debt more expansive and, as Fisher explained, this reinforced deflation again in a vicious spiral.
The fourth mission has the player fight a number of enemies that spiral toward the player shooting fireballs.
The dark brown bark has deep vertical fissures which often spiral up the trunk.
The exhibit had at its center a tall focal point, in the shape of a large spiral.
It will lead to mortgage foreclosures and negative equity, leading to more foreclosures, feeding the downward spiral still more.
We chose to observe NGC 253, which at a distance of 10 million light years is the nearest starburst spiral galaxy.
Jennie and Spiral wasted no time in having a good gander, peaking into cupboards and doors, presumably looking for more secret passages.
The overall length of the cochlea is shorter in Down's syndrome and the spiral ganglion cell population is reduced.
A tantalizing glimpse of the axed V&A Spiral in the form of samples of the fractal tiles which would have covered the building.
A new wrought iron handrail crafted locally was fitted to the double spiral staircase, completing the restoration.
The main advantage of this construction method is that it reduces the series inductance because the capacitor plates are not rolled into a spiral.
At the center of the receive coil is an 18 turn spiral inductor, with an innermost diameter of approximately 46mm.
Its 3 speed gearbox had right hand control and along with the spiral bevel rear axle was designed and manufactured in-house.
The three basic options are; not to do it at all, to use spiral lacing or to use sail ties.
It starts with the octagonal lantern topped by a gallery, then follows the spiral.
Fred's usual work was to mill the spiral sectors on cams for the automatic lathes in next door's factory.
A black ley line will tune into a black spiral and a white ley will tune into a white spiral.
We have also found a spiral fracture on what is possibly a deer bone, opened by a Neanderthal to extract the marrow.
Hence, there is a case for the spiral maze theory which archeologists are willing to entertain.
The library mezzanine floor was put in by our vendors; we'll have a cast iron spiral staircase joining the two.
The latter sponsored the construction of the Great Mosque of Samarra with its unique spiral minaret, built in 847.
Historical No-one before Hubble imagined that the spiral nebulae might be other galaxies.
I started the habit with pencil and spiral paper notebooks.
Explaining the basics of DNA and Genetics Human DNA contains 3 billion nucleotides and is wound up into a tight double helix spiral.
Access is by an outside door opening onto a stone spiral staircase.
These density waves are twisted by the elliptical orbits into spiral arms.
Among the pieces missing was the lower spiral bevel pinion.
Both Rams head and Spiral wedging involve the folding of the clay on itself too build up an ever tightening spiral of clay platelets.
A possible polymorph (not synthesized to date) would have a spiral channel system.
The standard binding for an assignment is a colored assignment folder which holds the work together with metal prongs or a spiral binding.
The WSRT was the first radio telescope to detect and map the spiral arms of another galaxy, M 51.
The spiral ramp to allow vehicle access to all three levels of the complex the blast door is behind the photographer.
They were caught in what Quandt and Selznick (1984) describe as the downward spiral of low self-concept and reading failure.
Bedroom A spiral staircase leads to an upstairs bedroom with twin beds and single bed settee.
With the oven ready, the friends created chocolate spiral shortbread, macaroons and Baci Di Dama biscuits.
Thus, whole communities were caught in a never-ending spiral of debt.
Rather than paving a smooth path to the court, it was causing an escalating spiral of partisan warfare and personal attack.
Many go into a wretched downward spiral, passed from owner to owner.
Such places benefit from a virtuous circle, or upward spiral, whereby talent attracts talent.
It is a vicious spiral, which the current approach to health care is incompetent to solve.
It could also lead to an inflationary rent spiral.
Japan is now caught in the same sort of deflationary spiral which gripped the world economy during the Great Depression of the 1930s.
I have used only one of these on an unhealthy spiral.
Wages may rise in response to this triggering off the possibility of a wage-price spiral.
Through an extraordinary chance alignment, a face-on spiral galaxy lies precisely in front of another larger spiral.
A depression habit spiral I liked to switch off the lights when I was alone in the house and put the saddest music on.
The more strategies you try, the more chance you have of finding what works for you in turning the depression spiral around.
It is believed that the LMC was once a barred spiral galaxy that was disrupted by the Milky Way to become somewhat irregular.
The beautiful galaxy NGC 3982 is a typical spiral galaxy and looks similar to our own galaxy, the Milky Way.
He led them down a spiral stair to an area of branching passage ways where a young, slender elf was waiting.
Connected to top floor by a wrought-iron spiral staircase.
Of particular note is the striking vaulted living room with open tread spiral staircase.
Classic oak wood spiral staircase leading to 2nd floor.
The flowering stem has twisted, lance shaped leaves arranged in a spiral or scattered around the stem.
For the full story of the Spiral sessions take a look at our Harry Roche page.
Two of the best candidates are a shock wave from a nearby supernova or from the passage through a spiral arm.
Even a usually supine Washington press has commented on how the two are locked together into a spiral of decline.
In the middle the light expands to produce a golden tendril, or downwards decreasing spiral.
Visitors walk up a spiral ramp to view displays of the marque including its sedans, engines, motorcycles, racing thoroughbreds and prototypes.
Spiral Passage used to be one of the more obscure passages in the system, but it is now rapidly becoming a major thoroughfare.
The deep spiral groove means that waste is removed quickly and the center screw thread helps the drill to pull itself into the material.
Spiral computed tomography of the pancreas showed a 3 x 2.5 cm mass in the region of the tail of the pancreas.
In this paper we hypothesized that invasive trophoblast released vasodilators which would dilate spiral arteries as an initial step in the physiology of transformation.
The third smaller ivory tusk finial from the Congo has figures seated in separate rows, rather than a spiral.
For medium head schemes runners are mounted in a spiral casing with internal adjustable guide vanes.
Now we can spiral toward the 21st Century in an orgy of fiery guitar virtuosity.
A vortex is a rapidly whirling spiral, a body of fluid or gas rotating around its own center.
Whorl Generally speaking a whorl Generally speaking a whorl is a circular or spiral feature, like a whorl of hair, or the spiral pattern in fingerprints.
The channeled wrack colonizes higher up the shore than the spiral wrack.
This remark applies to the finding of the area of a parabolic segment (mechanical solution) and of a spiral, the surface and volume of a sphere and of a segment thereof, and the volume of any segments of the solids of revolution of the second degree.
Propositions I-II are preliminary, 13-20 contain tangential properties of the curve now known as the spiral of Archimedes, and 21-28 show how to express the area included between any portion of the curve and the radii vectores to its extremities.
Two pins q, r, with spiral springs coiled round them, pass loosely through holes in the forks k, 1, and keep the bearings of the heads in and n firmly pressed against the ends of the micrometer box.
The Fleming closed circuit wave meter, called by him a cymometer, consists of a sliding tube condenser and a long helix of wire forming an inductance; these are connected together and to a copper bar in such a manner that by one movement of a handle the capacity of the tubular condenser is altered in the same proportion as the amount of the spiral inductance which is included in the circuit.
In Characeae and Muscineae they are of elongate spiral form, and consist of an elongate dense nucleus and a small quantity of - cytoplasm.
The members of the order present the same wide range of superficial appearance as do the Pectinibranchiate Streptoneura, forms carrying well-developed spiral shells and large mantle-skirts being included in the group, together with flattened or cylindrical slug-like forms. But in respect of the substitution of other parts for the mantle-skirt and for the gill which the more degenerate Opisthobranchia exhibit, this order stands alone.
The shell of the Pulmonata, though always light and delicate, is in many cases a well-developed spiral " house," into which the creature can withdraw itself; and, although the foot possesses no operculum, yet in Helix the aperture of the shell is closed in the winter by a complete lid, the " hybernaculum," more or less calcareous in nature, which is secreted by the froot.
The increase of the visceral dome, its spiral twisting, and the gradual closure of the space overhung by the mantle-skirt so as to v / FIG.
Shell external, spiral, generally ornamented with ribs; borders of aperture thin and not reflected; radula with square teeth; genital ducts without accessory organs.
Not seldom it is difficult to distinguish between the true spiral garment and a dress with parallel horizontal stripes, and, i?iiii iiu?i u?i?!N???iiii?
The latter building is first mentioned in 1448, but most of the present building dates from far later times, though the quaint paved spiral pathway (taking the place of a staircase in the interior) was made in the middle of the 16th century.
From 1848 to 1878 it was but with few interruptions employed for observations of nebulae (see Nebula); and many previously unknown features in these objects were revealed by it, especially the similarity of "annular" and "planetary" nebulae, and the remarkable "spiral" configuration prevailing in many of the brighter nebulae.
The movable coil of the wattmeter is normally suspended so that its axis is at right angles to that of the fixed coil and is constrained by the torsion of a spiral spring.
The outside of the cylinder was cooled by water circulating round a spiral screw thread in a narrow space with high velocity driven by a pressure of 120 lb per sq.
In the helicoid cyme there is also a false axis formed by the basal portion of the separate axes, but the flowers are not placed in a double row, but in a single row, and form a spiral or helix round the false axis.
The usually fistular pith is surrounded by a ring of collateral vascular bundle, (see Anatomy Of Plants, and Pteridophyta), each of which, with rare exceptions, has an intercellular canal at its inner edge, containing the disorganized spiral tracheae, just as in the recent genus.
The bars fall along spokes radiating from the center of the spiral.
The spiral shape of both the dark boundary and the white cirrus suggests a storm system rotating counterclockwise.
Some aspect of the shrine room was apparently keeping the unhealthy spiral at bay.
They were doomed to the downward spiral into oblivion as surely as the unreformed alcoholic.
The dust and spiral arms of normal spiral galaxies, like our own Milky Way, appear flat when viewed edge-on.
Most spiral galaxies have arms of gas and stars that trail behind as they turn.
M51 is a face on spiral galaxy with a companion on its north edge that appears to be colliding with M51.
This book 's four sturdy plastic drawing wheels make it remarkably fun to create perfectly swirly spiral designs.
Running up the spiral is row of exquisitely sensitive ' hair cells ' which synapse with the neurones of the cochlear nerve.
In short, we have given to the string the regular spiral arrangement of a tendril caught at both ends.
The good person becomes trapped in this spiral and his character deteriorates.
This river twirls about on a spiral course but is destined for bigger moments as this is the infant River Severn.
Raising prices to compensate only leads to a ' vicious spiral ' of further cancelations.
We need to create a virtuous spiral where better merchandising creates a better basis for forward planning.
For example, a jagged shape suggests the sound of glass breaking, a spiral shape suggests an equivalent whirring sound.
Whorl Generally speaking a whorl is a circular or spiral feature, like a whorl of hair, or the spiral pattern in fingerprints.
Some people will likely receive more expensive gifts because you have a closer relationship with them, but do not let the budget spiral out of control in order to impress or astonish people with expensive gifts.
The moment meaningful communication collapses, marriages enter a downward spiral from which it's difficult to recover.
The best type of saw to use for this is a jigsaw or spiral cut saw.
There are many things you can make in place of poultry - one particular favorite is a honey-roasted spiral ham.
For albums with a small number of photos and a significant amount of journaling, consider a spiral or strap bound album.
Transform a paper circle into a 3D flower by cutting it into a spiral shape and rolling tightly towards the center.
For example, Gerber daisies and pitchers filled with bread sticks in decorative spiral shapes can help set the mood for a wedding with a Tuscan theme.
Grow your hair out or use extensions and cover your head in loose, spiral curls.
Cut the rind of citrus fruits into one long spiral and glue around plain pillar candles that sit in water, with slices of the fruit surrounding them.
When they were two and four, my downward spiral took hold.
Instead of making healthy choices, problems arise on big and small levels that spiral downward.
By that time, he had already co-starred in five movies, one of which -- Spiral -- garnered him the coveted Internet Pixie award for Best Actor in an i-Feature Film.
Dano Plato, who played Kimberly Drummond, fell into a downward spiral of drug abuse that ended in her death in 1999, the result of a drug overdose.
Britney fans still fiercely defend her, which is more than can be said for most stars whose lives are on a steady downward spiral.
His downward spiral removed him from the acting world for a number of years and in 2001 he was the subject of an E!
When Lindsay's life began to spiral out of control, Dina was often blamed for pulling the reigns in on her "wild-child" daughter.
Two years after Altered States, Barrymore took on the role that was the catalyst for her acting career and her downward spiral into booze and drugs.
Twiggy set in motion a persistent downward spiral in celebrity clothing sizes.
It features four swimming pools, a 214-foot spiral waterslide, seven hot tubs and nearly a dozen lounges.
This company, which also has a mail-order catalog, offers trellises for cucumbers that allow them to shade other plants, classic tomato cages, spiral supports, bean towers, maypoles and more.
A hot trend in belly button rings is the spiral or twister style.
An open spiral circle pendant symbolizes the journey of life through friendship with a true friendship sentiment inscribed on it.
If you'd prefer to have a black and white spiral style, go for it.
Things can quickly spiral out of control, especially when confronted with new and spine-tingling shiny products.
This, however, is a collection of some of the wickedest lenses available, including Vampire, Edward Cullen, Death Spiral, Glow, Cat's Eye, and Rock Star.
That long stretch of track will pass by in an instant through the intense acceleration, and as the coaster turns completely vertical ascending its primary hill it rolls through a 90 degree spiral.
The view from the top of the hill is unparalleled but all too brief, and the coaster plummets straight down and twists through a 270 degree spiral on its way back to earth.
The cell simulations will work under both rectangular and spiral cellular automata configurations.
During the 4th mission The Penthouse, when you get near the spiral staircase, there will be a TV which has Splinter Cell showing.
The spiral starts from the outside, and slowly works its way toward the center.
Scoliosis. Scoliosis, or curvature of the spine, is a disorder in which the vertebrae that make up the spine twist out of line from side to side into an S-shape or a spiral.
These white blood cells also provoke more inflammation, continuing the downward spiral that marks untreated CF.
Types include linear, oblique, transverse, longitudinal, and spiral fractures.
Spiral fractures are described as crossing a bone at an oblique angle, creating a spiral pattern.
Unrelieved pain can become a syndrome in its own right and cause a downward spiral in a person's health and outlook.
An individual possessing at least one copy of the dominant form of this gene is both right-handed and has a clockwise hair spiral.
The traditional noodle used for pasta salad is usually Fusilli, which is a spiral shaped pasta.
Then try the Golden Ratio, 1.61803, and see the perfect seed spiral appear.
As it unfolds it follows a pattern very similar to the logarithmic spiral, known as the Golden Spiral, which follows the Fibonacci Sequence.
They are also more attractive than page after page of handwritten notes in a spiral bound notebook.
Wrap your hair around the barrel in a spiral motion, being careful to keep your fingertips off of the barrel of the iron (a heat resistant glove will also help, and is available at Sally's Beauty Supply).
Tight curls were all the rage in the 80s and a popular perm variation was the spiral perm.
Face framing ringlets, spiral perms, or long, loose waves can be classy options with a soft, innocent appeal.
Spiral curls form in the hair when it is dry.
Either way, straight or curly, spiral locks add a wealth of volume, making this hair type the perfect foundation for many styles.
Spiral perms are yet another option for thick hair that can help decrease styling time while adding much needed lift at the roots.
No matter the color or condition of your hair, chances are you sacrificed everything to get a spiral perm.
To get this famous funky 80s hairstyle, you'll want to start with medium to long length hair and opt for a tight spiral roll.
All joking aside, spiral perms are still in style and making a major comeback thanks to pop starlet Taylor Swift.
Swift said so long to her trademark long spiral curls and hit the streets of New York City with super sleek tresses.
Some claim Swift's flattened hairdo made her look much older, while others note that the singer's naturally curly hair is as much a part of her image as her voice, so she should stick with her trademark spiral perm-like ringlets.
Simply twisting the bang into a spiral formation and brushing it off the forehead will help to create a blended side swept look.
Abeka Math is a standard workbook-based math program that utilizes a spiral approach to teaching.
The problem with spiral teaching is that it may move too quickly for some children, while holding more advanced children back.
The English curriculum uses a spiral approach to learning, similar to the approach used in the Abeka Math curriculum.
However, at $20 per half hour on average, these lessons can quickly spiral into expensive.
The curriculum uses a true spiral approach, a method that is used less successfully in the United States.
In the spiral approach, the curriculum assumes prior mastery of the subject in the previous grade and so does not review basic processes but moves on to a higher level in each subject.