rod, a stick, another form of " rod," O.E.
The rod was bent in the middle so that it could be turned as with a crank.
Each rod therefore contains on two of its faces multiples of digits which are complementary to those on the other two faces; and the multiples of a digit and of its complement are reversed in position.
I do not remember what they all were; but I do know that mother, father, sister, teacher were among them--words that were to make the world blossom for me, "like Aaron's rod, with flowers."
In 1831 Wheatstone by his " magic lyre" experiment showed that, when the sounding-boards of two musical instruments are connected together by a rod of pine wood, a tune played on one will be faithfully reproduced by the other.
The cylinder contains towards n a sliding rod, and towards 0 a compressed spiral spring.
They sat in a heavy flat-bottomed boat, each holding a long, crooked rod in his hands and eagerly waiting for "a bite."
Each of the four faces of each rod contains multiples of one of the nine digits, and is similar to one of the slips just described, the first rod containing the multiples of o, I, 9, 8, the second of o, 2, 9, 7, the third of o, 3, 9, 6, the fourth of 0, 4, 9, 5, the fifth of I, 2, 8, 7, the sixth of I, 3, 8, 6, the seventh of I, 4, 8, 5, the eighth of 2, 3, 7, 6, the ninth of 2, 4, 7, 5, and the tenth of 3, 4, 6, 5.
There are three Li ting - typical methods: (I) A direct pull may be applied to the hook, either by screws, or by a cylinder fitted with is piston and rod and actuated by direct hydraulic or other pressure, as shown diagrammatically in fig.
He overcame the difficulty by erecting a vertical earthed receiving antenna like a lightning rod and attached a lateral extension to it at a yard or two above the earthed end.
"There were lots of folks who passed through these doors over the last century," he said, sounding not unlike Rod Sterling.
Attached to the bulb was a glass rod and then a tube containing iron wire.
One afternoon I amused myself by watching a barred owl (Strix nebulosa) sitting on one of the lower dead limbs of a white pine, close to the trunk, in broad daylight, I standing within a rod of him.
They fastened each of these wheels to the end of an iron rod which they passed through the boat from side to side.
The short screw whose divided milled head is shifts the zero of the micrometer by pushing, without turning, the short sliding rod whose flat end forms the point d'appui of the micrometer screw at I.
The tube is then exhausted of its air, and attached to a bone or glass rod as a holder.
He received his early education, according to Morice his secretary, from " a marvellous severe and cruel schoolmaster," whose discipline must have been severe indeed to deserve this special mention in an age when no schoolmaster bore the rod in vain.
Let a conductor, say a metallic sphere, be supported by a metal rod of negligible electric capacity whose other end is earthed.
16), extending between the fenestra ovalis and the tympanic membrane or drum, consists of (I) the long and slen der columella, a straight, ossified rod which fits with a disk into the fenestra r; t st ovalis; it is homologous with the stapes (m.st.), although not stirrupshaped; (2) the extra-columellar mass.
Both Bell and Gray proposed to do this by introducing a column of liquid into the circuit, the length or the resistance of which could be varied by causing the vibrations of the diaphragm to vary the depth of immersion of a light rod fixed to it and dipping into the liquid.
Here /3 reads Kvpiov for roD 6EOU.
It is familiar in the titles, showing the colour of their wands of office, of the gentlemen ushers of the three principal British orders of knighthood, the ushers of the Garter and St Patrick being "Ushers of the Black Rod," and of the Thistle "Green Rod."
18, 19), or the " rod of His wrath," for the chastisement of Israel (x.
The forests throughout most of the state have a luxuriant undergrowth consisting of a great variety of shrubs, flowering plants, grasses, ferns and mosses, and the display of magnolias, azaleas, kalmias, golden rod, asters, jessamines, smilax, ferns and mosses is often one of unusual beauty.
Close to them is the remarkable dart-sac ps, a thick-walled sac, in the lumen of which a crystalline four-fluted rod or dart consisting of carbonate of lime is found.
application being the same as in "rod"; as a measure of area, a rod= a square pole or perch, 304 square yds.
The main shaft bearings are in two sets and composed of steel balls running in steel cones and cups; the governor is an iron rod about 16 in.
rudis, a staff), properly a rod or pole, and so used as the name of a surface measure of land.
long and are interposed between the heavy iron augerstem carrying the bit and the upper rod, known as the sinker-bar.
Io - I I) admonishes his sons: Hpbs Ta y Ta7rELYWVEL Kaptlas u,I.LWV 'isa SE577vOs EUXoyLav Ea roD u7-6,l,Garoi abroli.
16, I Oavev 61 ix' aUTOUS a`7 6pyi (+ roD [[Oeou Defg]] 2t, Vulg.
The demagnetizing force inside a cylindrical rod placed longitudinally in a uniform field Ho is not uniform, being greatest at the ends and least in the middle part.
Buttercups, violets, anemones, spring beauties, trilliums, arbutus, orchids, columbine, laurel, honeysuckle, golden rod and asters are common wild flowers, and of ferns there are many varieties.
A form of the rod system is used in the Russian oil-fields, but owing to the large diameter of the wells the appliances differ from those employed elsewhere.
The strength of the current may also be regulated by introducing lengths of German silver or iron wire, carbon rod, or other inferior conductors in the path of the current, and a series of such resistances should always be provided close to the tanks.
A wire or rod in this condition is said to be circularly magnetized; it may be regarded as consisting of an indefinite number of elementary ring-magnets, having their axes coincident with the axis of the wire and their planes at right angles to it.
It has been asserted (and denied) that the cellular rod which is known as the "Heart-body" (Herzkorper), and is to be found in the dorsal vessel of many Oligochaeta and Polychaeta, is formed of cells which are continuous with the chloragogen cells, thus implying the existence of apertures of communication with the coelom.
In the middle part of a rod which has a length of 400 or 500 diameters the effect of the ends is insensible; but for many experiments the condition of endlessness may be best secured by giving the metal the shape of a ring of uniform section, the magnetic field being produced by an electric current through a coil of wire evenly wound round the ring.
The magnetization retained by a long thin rod, even when its coercive force is small, is sometimes little less than that which was produced by the direct action of the field.
- Intensity of magnetization is most directly measured by observing the action which a magnetized body, generally a long straight rod, exerts upon a small magnetic needle placed near it.
In order to fulfil the requirement that the field which a magnetized rod produces at the magnetometer shall be at right angles to that of the earth, the rod may be conveniently placed in any one of three different positions with regard to the suspended needle.
(I) The rod is set in a horizontal position level with the suspended needle, its axis being in a line which is perpendicular to the magnetic meridian, and which passes through the centre of suspension of the needle.
AB is the rod and C the middle point of its axis; NS is the magnetometer needle; AM bisects the undeflected needle NS at right angles.
Let 21=the length of the rod (or, more accurately, the distance between its poles), v= its volume, m and - m the strength of its poles, and let d= the distance CM.
We then have approximately for the field at M due to the rod 4 HP= (dm1)2 (d + 1) = m (d 2 _ M Therefore 2m1= = (d2 - 12)2Ht, - (d2-12)2HEtan 0 2d 2d (44) M (d2-12)2HE (45) And I = v - 2dv tan 0, whence we can find the values of I which correspond to different angles of deflection.
At one rod from the shore its greatest fluctuation, when observed by means of a level on land directed toward a graduated staff on the ice, was three quarters of an inch, though the ice appeared firmly attached to the shore.
(2) The rod may be placed horizontally east and west in such a position that the direction of the undeflected suspended needle bisects it at right angles.
2, which represents the four faces of the fifth rod.
The electromotive force of each cell is i 07 volts and the resistance 3 ohms. The Fuller bichromate battery consists of an outer jar containing a solution of bichromate of potash and sulphuric acid, in which a plate of hard carbon is immersed; in the jar there is also a porous pot containing dilute sulphuric acid and a small quantity (2 oz.) of mercury, in which stands a stout zinc rod.
a word, with a minimum of rod.
In conclusion it may be stated that the two systems of drilling for petroleum with which by far the largest amount of work has been, and is being done, are the American or rope Comparison system, and the Canadian or rod system.
He himself once boasted that sixteen of the bishops who then occupied the bench had been birched with his "little rod."
In the last method the master turned the slave round, with the words " Tiber esto," in the presence of the praetor, that officer or his lictor at the same time striking the slave with his rod.
Black Rod >>
For most ordinary purposes the length of the needle may be assumed to be negligible in comparison with the distance between the needle and the rod.
Let the distance of each pole of the rod AB from the centre of the magnetometer needle = d.
v (3) In the third position the test rod is placed vertically with one of its poles at the level of the magnetometer needle, and in the line 7.
8, where AB is the vertical rod and M indicates the position of the magnetometer needle, which is supposed to be perpendicular to the plane of the paper.
Denoting the distance AM by d 1, BM by d2, and AB by 1, we have for the force at M due to the magnetism of the rod H P =d 12 - horizontal component (dla - d 2 3).
This last method of arrangement is called by Ewing the " one-pole method, because the magnetometer deflection is mainly caused by the upper pole of the rod (Magnetic Induction, p. 40).
On the other hand, a vertically placed rod is subject to the inconvenience that it is influenced by the earth's magnetic field, which is not the case when the rod is horizontal and at right angles to the magnetic meridian.
This extraneous influence may, however, be eliminated by surrounding the rod with a coil of wire carrying a current such as will produce in the interior a magnetic field equal and opposite to the vertical component of the earth's field.
Of the three methods which have been described, the first two are generally the most suitable for determining the moment or the magnetization of a permanent magnet, and the last for studying the changes which occur in the magnetization of a long rod or wire wl?E:n subjected to various external magnetic forces, or, in other words, for determining the relation of I to H.
The sample may have the form of a closed ring, upon which are wound the induction coil and another coil for taking the magnetizing current; or it may consist of a long straight rod or wire which can be slipped into a magnetizing coil such as is used in magnetometric experiments, the induction coil being wound upon the middle of the wire.
With these arrangements there is no demagnetizing force to be considered, for the ring has not any ends to produce one, and the force due to the ends of a rod 400 or 500 diameters in length is quite insensible at the middle portion; H therefore is equal to Ho.
The induction of the magnetization may be measured by observing the force required to draw apart the two portions of a divided rod or ring when held together by their mutual attraction.
The sample has the form of a thin rod, one end of which is faced true; it is slipped into the magnetizing coil from above, and when the current is turned on its smooth end adheres tightly to the surface of the yoke.
The specimen, which has the form of a turned rod, 4 in.
One pole has a V-shaped notch for the rod to rest in; the surface of the other is slightly rounded, forming a portion of a cylinder, the axis of which is perpendicular to the direction of the length of the rod.
The rod touches this pole at a single point, and is pulled away from it by the action of a lever, the long arm of which is graduated and carries a sliding weight.
The position of the weight at the moment when contact is broken indicates the induction in the rod.
Several pieces of apparatus have been invented for comparing the magnetic quality of a sample with that of a standard iron rod by a zero method, such as is employed in the comparison of electrical resistances by the Wheatstone bridge.
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.
For simplicity of calculation, the clear length of each rod between the yokes is made 12.56 (=47r) centimetres, while the coil surrounding the standard bar contains 100 turns; hence the magnetizing force due to a current of n amperes will be ion C.G.S.
The effective number of turns in the coil surrounding the test rod can be varied by means of three dial switches (for hundreds, tens and units), which also introduce compensating resistances as the number of effective turns in the coil is reduced, thus keeping the total resistance of the circuit constant.
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.
By the alternate application and withdrawal of a small magnetizing force a cyclic condition may be established in an iron rod.
It is remarkable that the phenomena of magnetic viscosity are much more evident in a thick rod than in a thin wire, or even in a large bundle of thin wires.
In order to meet the objection that the phenomenon might be due to electromagnetic action between the coil and the rod, Bidwell made some experiments with iron rings, and found that the length of their diameters varied under magnetization in precisely the same manner as the length of a straight rod.
Little or no change of length was observed until the strength of the field Ho reached about 50; then the rod began to contract, and after passing a minimum at Ho= 000, recovered its original length at Ho = 750; beyond this point there was extension, the amount of which was still increasing fast when the experiment was stopped at Ho= 1400.
The truth appears to be that a hardened steel rod generally behaves like one of iron or soft steel in first undergoing extension under increasing magnetizing force, and recovering its original length when the force has reached a certain critical value, beyond which there is contraction.
It has been suggested 2 that an iron rod under magnetization may be in the same condition as if under a mechanically applied longitudinal stress tending to shorten the iron.
If a long magnetized rod is divided transversely and the cut ends placed nearly in contact, the magnetic force inside the narrow air gap will be B = H +47rI.
The width of the gap may be diminished until it is no greater than the distance between two neighbouring molecules, when it will cease to be distinguishable, but, assuming the molecular theory of magnetism to be true, the above statement will still hold good for the intermolecular gap. The same pressure P will be exerted across any imaginary section of a magnetized rod, the stress being sustained by the intermolecular springs, whatever their physical nature may be, to which the elasticity of the metal is due.
The whole of the rod will therefore be subject to a compressive longitudinal stress P, the associated contraction R, expressed as a fraction of the original length, being R = P/M = (B 2 -H2)/87-M, where M is Young's modulus.
Ewing's independent experiments showed that the magnetization curve for a cobalt rod under a load of 16.2 kilogrammes per square mm.
crossed the curve for the same rod when not loaded at II= 53.
Since, for example, stretching diminishes 'the magnetization of nickel, it follows from theory that the length of a nickel rod should be diminished by magnetization and conversely.
In the iron cylinder and ovoid, which expanded when magnetized, compression caused a diminution of magnetization; in the nickel rod, which contracted when magnetized, pressure was attended by an increase of magnetization.
Trans., 1883, Part I., 153) discovered in 1881 that the resistance of a bismuth rod was slightly increased when the rod was subjected to longitudinal magnetic force, and a year or two later A.
PLR, Posterior lateral rod or RAP, Right anterior process.
ALR, Anterior lateral rod or tendon.
A tie between the middle point of the rod OA and Q can be used if thought desirable.
At the end of the stroke, when his platform comes opposite to a corresponding platform on the other rod, he steps over on to the latter during the instant of rest prior to the reversal of the stroke, descends with the second rod on this down stroke, steps again at the proper time to a platform of the first rod and so on to the bottom.
The engine works a massive counter-balanced walking-beam from which is suspended in the shaft a long wooden (or steel) rod, made in sections and spliced together.
Attached to the rod by offsets are one or more plunger or bucket pumps, set at intervals in the shaft.
i shows the arrangement in a suction pump. A is the cylinder within which the piston B is moved up and down by the rod C. D is the inlet pipe (the lower extremity of which is placed beneath the surface of the liquid to be G removed), and G is the outlet pipe.
It is seen that the action is intermittent, liquid only being discharged during a down stroke, but since the driving force is that which is supplied to the piston rod, the lift is only con ditioned by the power available and by the strength of the pump. A continuous supply can be obtained by leading the delivery pipe into the base of an air chamber H, which is fitted with a discharge pipe J of such a diameter that the liquid cannot escape from it as fast as it is pumped in during a down stroke.
The piston rod passes through a valve in the upper part of the cylinder which is held to its seat by a spring.
A mass of glass in a viscous state can be rolled with an iron roller like dough; can be rendered hollow by the pressure of the human breath or by compressed air; can be forced by air pressure, or by a mechanically driven plunger, to take the shape and impression of a mould; and can be almost indefinitely extended as solid rod or as hollow tube.
The examination of small test-pieces of the glass withdrawn from the crucible by means of an iron rod having shown that the molten mass is free from bubbles, the stirring process may be begun, the object of this manipulation being to render the glass as homogeneous as possible and to secure the absence of veins or striae in the product.
In the viscous state a mass of glass can be coiled upon the heated end of an iron rod, and if the rod is hollow can be blown into a hollow bulb.
Across the arms he balances the iron rod to which the glass bulb adheres, and rolling it backwards and forwards with the fingers of his left hand fashions the glass between the blades of his sugar-tongs tool, grasped in his right hand.
During the process of manipulation, whether on the chair or whilst the glass is being reheated, the rod must be constantly and gently trundled to prevent the collapse of the bulb or vessel.
The mere act of coiling an exact weight of molten glass round the end of a rod 4 ft.
The bowl is now severed from its blowing iron and the unfinished wine-glass is supported by its foot, which is attached to the end of a working rod by a metal clip or by a seal of glass.
One workman holds the blowing iron with the mass of glass attached to it, and another fixes an iron rod by means of a seal of glass to the extremity of the mass.
He then grips the body of the bottle with a four-pronged clip, attached to an iron rod, and passes it to the " bottle maker."
4 c), and has particles of sand adhering to it, as if the vessel had been filled with sand and subjected to heat, and the inside of the neck has the impression of a metal rod (Plate I.
A modern glassblower, when making an amphora-shaped vase, finishes the base first, fixes an iron rod to the finished base with a seal of glass, severs the vase from the blowing iron, and finishes the mouth, whilst he holds the vase by the iron attached to its base.
Having blown the body of the vase, he finished the mouth and neck part, and fixed a small, probably hollow, copper rod inside the finished neck by pressing the neck upon the rod (Plate I.
Having severed the body of the vase from the blowing iron, he heated and closed the fractured base, whilst holding the vase by means of the rod fixed in the neck.
It is probable that when the metal rod was withdrawn the vessel was filled with sand, to prevent collapse, and buried in heated ashes to anneal.
thick, of which one end was kept at too° C., the rest of the rod in a "vacuum" (of 5 mm.
in diameter, in any of which larger sizes they may be fruited in the following season, but, to be successful in this, the young rod produced must be thoroughly matured after it has reached its limit of growth.
in diameter, which follows the curve of the hemispherical bottom, and is fitted from one side to the other of the defecator; one end is entirely closed, and the other is connected by a small pipe to a shallow circular vessel outside the defecator, covered with an india-rubber diaphragm, to the centre of which is attached a light rod actuating a steam throttle-valve, and capable of being adjusted as to length, &c. The copper pipe and circular vessel are filled with cold water, which on becoming heated by the surrounding juice expands, and so forces up the india-rubber diaphragm and shuts off the steam.
By adjusting the length of the connecting rod and the amount of water in the vessel, the amount of steam admitted can be regulated to a nicety.
Through an orifice in the outlet pipe (which is closed during the distillation by a loose plug) a hot iron rod can be introduced from time to time to clear away any solid zinc that may threaten to obstruct it.
A rod of perfectly pure zinc, when immersed in dilute sulphuric acid, is so very slowly attacked that there is no visible evolution of gas; but, if a piece of platinum, copper or other more electro-positive metal be brought into contact with the zinc, it dissolves readily, with evolution of hydrogen and formation of the sulphate.
In the best-known form a plumbago crucible was used with a hole cut in the bottom to receive a carbon rod, which was ground in so as to make a tight joint.
This rod was connected with the positive pole of the dynamo or electric generator.
The crucible was fitted with a cover in which were two holes; one at the side to serve at once as sight-hole and charging door, the other in the centre to allow a second carbon rod to pass freely (without touching) into the interior.
This rod was connected with the negative pole of the generator, and was suspended from one arm of a balance-beam, while from the other end of the beam was suspended a vertical hollow iron cylinder, which could be moved into or out of a wire coil or solenoid joined as a shunt across the two carbon rods of the furnace.
The solenoid was above the iron cylinder, the supporting rod of which passed through it as a core.
Immediately the current passed through the solenoid it caused the iron cylinder to rise, and, by means of its supporting rod, forced the end of the balance beam upwards, so depressing the other end that the negative carbon rod was forced downwards into contact with the metal in the crucible.
On passing a current through the carbon the small rod is heated to incandescence, and imparts heat to the surrounding mass.
This head slides freely in the cast iron tubes, and is connected by a copper rod with one of the terminals of the dynamo supplying the current.
He catches them by means of a rod smeared with bird-lime, and then tying a fine string under their wings, he flies them at its end.
Golden Rod >>
If the electrified tray is touched with the sealing-wax or ebonite rod, it will not be discharged, but if touched with a metal wire, the hand, or a damp thread, it is discharged at once.
The sign of the electrification imparted to the electroscope when so charged - that is, whether positive or negative - can be determined by rubbing the sealing-wax rod with flannel and the glass rod with silk, and approaching them gently to the electroscope one at a time.
Hence if the electrified sealing-wax rod makes the leaves collapse, the electroscopic charge is positive, but if the glass rod does the same, the electroscopic charge is negative.
Even if a charged and insulated conductor, such as an open canister or deep cup, is not perfectly closed, it will be found that a proof-plane consisting of a small disk of gilt paper carried at the end of a rod of gum-lac will not bring away any charge if applied to the deep inside portions.
Then consider a thin annulus thin of the wire of width dx; the charge on it is equal to thin rod.
The above expressions for the capacity of an ellipsoid of three unequal axes are in general elliptic integrals, but they can be evaluated for the reduced cases when the ellipsoid is one of revolution, and hence in the limit either takes the form of a long rod or of a circular disk.
In the extreme case when e=1, the prolate ellipsoid becomes a long thin rod, and then the capacity is given by C 1 = a/log e 2a/b (io), which is identical with the formula (2) already obtained.
In the mills of the Californian type the stamp is a cylindrical iron pestle faced with a chilled cast iron shoe, removable so that it can be renewed when necessary, attached to a round iron rod or lifter, the whole weighing from 600 to 900 lb; stamps weighing 1320 lb are in use in the Transvaal.
It is an important centre both for sea fisheries and for sport with the rod.
He determined the "elastic curve," which is formed by an elastic plate or rod fixed at one end and bent by a weight applied to the other, and which he showed to be the same as the curvature of an impervious sail filled with a liquid (lintearia).
The vaporizing bulb A has fused about it a jacket B, provided with a condenser c. Two side tubes are fused on to the neck of A: the lower one leads to a mercury manometer M, and to the air by means of a cock C; the upper tube is provided with a rubber stopper through which a glass rod passes - this rod serves FIG.
to), for the purpose of interposing at pleasure the prism it in the axis of the reading micrometer; this enables the observer to view the graduations on the face of the metallic thermometer TT (composed of a rod of brass and a rod of zinc).
9) by the tangent screw f, acting on a small toothed wheel clamped to the rod connected with the driving pinion, there was apt to be a torsion of the rod rather than an immediate action.
Finally the hand-wheel 80 is connected by gearing to the rod carrying the hand-wheel 79, and it can thus be used to give the latter a more rapid motion than if used direct; this constitutes the third speed of movement.
5, and who was to rule the nations with a rod of iron, at last appears in discharge of His office.
conjectured that thunder and lightning were electrical manifestations; in the same year he planned the lightning-rod (long known as " Franklin's rod "), which he described and recommended to the public in 1753, when the Copley medal of the Royal Society was awarded him for his discoveries.
AARON'S ROD, the popular name given to various tall flowering plants ("hag taper," "golden rod," &c.).
In architecture the term is given to an ornamental rod with sprouting leaves, or sometimes with a serpent entwined round it (from the Biblical references in Exodus vii.
The liquid to be filtered is poured into the cone, preferably down a glass rod upon the sides of the funnel to prevent splashing and to preserve the apex of the filter-paper, and passes through the paper, upon which the solid matter is retained.
The charge is completely melted in about half an hour, and it is then thoroughly mixed by stirring with a graphite rod.
The losses are caused by volatilization, by the absorption of metal by the crucible, stirring rod, &c., and by occasional projection of particles from the pot into the furnace.
The blanks are placed in the slide J and the lowest one is carried forward to the die in two successive movements of the " layer-on " K, a rod working backwards and forwards on a horizontal plate and actuating the finger L, fig.
This is done by the little crank B on the axle of the fly-wheel, acting through the rod C, and the bent lever D, which forms a toggle-joint at E with the vertical piece of metal below it.
This movement proceeds until the stirrup L below the left-hand hanger is raised far enough to touch the rod M, which is equal in weight to twice the remedy.
The rod N is then lowered and allows the indicating finger 0, which is pivoted at P, to fall until it rests on the stirrup R, which is part of the hanger D.
The extension of 0 holds down the right-hand end of the rod S which is also pivoted at P, and enables its end to fit into one of the three inverted steps on the bottom of the shoot Q.
If the coin is light the rod S fits into the uppermost step and the shoot stops over the right-hand slot.
The pursuit of mechanical methods furnished a stimulus to the study of mechanical loci, for example, the locus of a point carried on a rod which is caused to move according to a definite rule.
Glauber's salt readily forms supersaturated solutions, in which crystallization takes place suddenly when a crystal of the salt is thrown in; the same effect is obtained by exposure to the air or by touching the solution with a glass rod.
It consists of a straight rod clamped in a vice and carrying a bead at its upper free end.
If the rod is circular in section and perfectly uniform the end will describe a circle, ellipse or straight line; but, as the elasticity is usually not exactly the same in all directions, the figure usually changes and revolves.
A glass or metal rod, the " sounder," is clamped at its middle point, and fixed along the prolongation of the axis of the dust-tube as in fig.
Ann., 1876, 1 57, p. 356), using a double form of the apparatus in which there are two dusttubes worked by the same sounding rod.
This rod is supported at 4 and 4 of its length where it enters the two dust-tubes, as represented diagrammatically in fig.
In the mercury experiment the sounding rod was sealed into the dust-tube, which was exhausted of air, and contained only some mercury and some quartz dust to give the heaps.
Subject to a limitation which we shall examine later, the velocity of a longitudinal disturbance along a wire or rod depends only on the material of the rod, and not upon the cross-section.
Suppose that a disturbance is travelling with velocity U unchanged in form along a rod from left to right.
Let us move the rod from right to left, so that the undisturbed parts move with velocity U.
At A, if the velocity of the disturbance relative to undisturbed parts of the rod is u from left to right, the velocity relative to A is U - u.
Also since dx has been stretched to +dy p&,(dx +dy) =po&odx or p&'(I +dy/dx) = (29) Substituting from (28) in (27) Y&a + P(2)U 2 (I + dy (3) 2 = p oc?oU 2, 0) and substituting from (29) in (30) Y&ao dx + pocZoU 2 + dx) = p owoU 2, (31) whence Yc = powoU2, or U2 = Y/ p, (32) where now p is the normal density of the rod.
The velocity with which the rod must travel in order that the disturbance may be fixed in space is therefore U =, I (Y/p), or, if the rod is kept fixed, this is the velocity with which the disturbance travels.
Let us suppose that the rod is circular, of radius r, and that the radial displacement of the surface is r t.
But keeping r/X small we may as before form stationary waves, and it is evident that the series of fundamental and overtones will be just as with the air in pipes, and we shall have the same three types - fixed at one end, free at both ends, fixed at both ends - with fundamental frequencies respectively 41, p ' 21 V p, and I velocity in rod =velocity in air X distance between dust heaps.
Now suppose that the wire or rod is moved from right to left with velocity U.
- When a bar or rod is of considerable cross-section, a transversal disturbance calls into play forces due to the strain of the material much more important than the forces due to any tension which is ordinarily applied.
A glass or brass rod free at both ends may be held by the hand in the middle and excited by stroking one end outwards with a damp cloth.
Young's modulus may be obtained for the material of a rod by clamping it in the middle and obtaining the frequency of the fundamental when Y = 412n2p.
The value thus obtained is generally appreciably greater than that obtained by a statical method in which the rod is pulled out by an applied tension.
Rods of different materials may be used as sounders in a Kundt's dust tube, and their Young's moduli may be compared, since: length of rod Then dO U = - ax dx or dt = - UK.
If a rod is clamped at one end and free at the other, the fundamental frequency is (i/1)¦l (n/p).
For iron n/p is of the order 10 11, so that the frequency for a rod 1 metre long is about 3000.
Circular nodal lines unaccompanied by intersecting lines cannot be produced in the manner described; but may be got either by drilling a small hole through the centre, and drawing a horse-hair along its edge to bring out the note, or by attaching a long thin elastic rod to the centre of the plate, at right angles to it, holding the rod by the.
39, middle and rubbing it lengthwise FIG with a bit of cloth powdered with resin, till the rod gives a distinct note; the vibrations are communicated to the plate, which consequently vibrates transversely, and causes the sand to heap itself into one or more concentric rings.
Archimedes gave his results in the treatise IIepi Ti j c aOaipas Kai roD KUXLvbpov: he left unfinished the problem of dividing a sphere into segments whose volumes are in a given ratio.
The chains are so arranged that there is a suspending rod at each 8 ft., attached at the joint of one of the FIG.
Rod.) See further Sainte-Beuve, Portraits contemporains, ii.; Antoine Guillois, Le Salon de Mme Helvetius (1894) and La Marquise de Condorcet (1897); O'Meara, Un Salon a Paris: Mme Mohl (undated); and J.
The cathode consists of an iron rod which can be gradually raised.
On electrolysis a layer of metallic calcium is formed at the lower end of this rod on the surface of the electrolyte; the rod is gradually raised, the thickness of the layer increases, and ultimately a rod of metallic calcium, forming, as it were, a continuation of the iron cathode, is obtained.
Fluorides can be readily detected by their power of etching glass when warmed with sulphuric acid; or by warming them in a glass tube with concentrated sulphuric acid and holding a moistened glass rod in the mouth of the tube, the water apparently gelatinizes owing to the decomposition of the silicon fluoride formed.
The apparatus described in the patent specification is an iron cylinder heated by gas rings below, with a narrower cylinder beneath, through which passes upwards a stout iron cathode rod cemented in place by caustic soda solidified in the narrower vessel.
Carbon powder compressed into a rod was slowly passed through a tube in which it was subjected to the action of one or more electric arcs.
Mag., 20, p. 126) consists of a U tube, one leg of which contains a rod of pure " amalgamated zinc, and the other a rod of freshly electrotyped copper.
The legs are filled with solutions of zinc sulphate and copper sulphate, the zinc rod being in the zinc sulphate and the copper rod in the copper sulphate.
A red-hot iron rod may also be used to set off the magnesium, which in turn ignites the thermit.
For this purpose the thermit is placed in a can on the end of a rod and plunged to the bottom of the molten metal.
Among indigenous fruit-bearing trees, shrubs and vines the state has the bird cherry, black cherry, blueberry, cranberry, raspberry, blackberry, gooseberry, strawberry, grape and black currant; and conspicuous among a very great variety of shrubs and flowering plants are the rose, dogwood, laurel, sumac, holly, winterberry, trilliums, anemones, arbutuses, violets, azaleas, eglantine, clematis, blue gentians, orange lilies, orchids, asters and golden rod.
This method ensures a clean-butted unfractured rod, but unless great judgment is exercised in selecting the proper time for cutting, the rods will remain double-skinned and the head may bleed.
It is generated by the extremities of a rod which is constrained to move so that its middle point traces out a circle, the rod always passing through a fixed point on the circumference.
The polar equation is r=a+b cos 0, where 2a= length of the rod, and b= diameter of the circle.
The larger nuclear body, which corresponds to the trophonucleus of a Trypanosome, is usually round or oval; the smaller one, representing a kinetonucleus, has the form either of a little rod or of a round grain, and is generally separate from the larger nucleus.
These more specialized actions are most typically seen in the Divining Rod (q.v.; see also Table-Turning), which indicates the presence of water and is used among the uncivilized to trace criminals.
He compares it also to the change of Moses' rod into a snake, of the Nile into blood, to the virtue inherent in Elijah's mantle or in the wood of the cross or in the clay mixt of dust and the Lord's spittle, or in Elisha's relics which raised a corpse to life, or in the burning bush.
The kaleidophone, intended to present visibly the movements of a sonorous body, consisted of a vibrating wire or rod carrying a silvered bead reflecting a point of light, the motions of which, by persistence of the successive images on the retina, were thus represented in curves of light.
chr, Chitonous rod embedded in v, Blood-vessel.
inheritance; to break the pride of sinners and all their strength as potter's vessels with a rod of iron (Ps.
This solution is maintained at a heat of 195°, and in it the hanks of raw silk are immersed, hung on a wooden rod, the hanks being continually turned round so as to expose all portions equally to the solvent influence of the hot solution.
Smaller pieces are thrown into a bath of melted carnallite and pressed together with an iron rod, the bath being then heated until the globules of metal float to the top, when they may be removed in perforated iron ladles, through the holes in which the fused chloride can drain away, but through which the melted magnesium cannot pass by reason of its high surface tension.
They have usually been made square with a vertical steel rod at each corner.
A similar sound may be made by affixing those feathers to the end of a rod and drawing them rapidly downwards in the same position as they occupy in the bird's tail while it is performing the feat.
The prelate has always been the bishop of Winchester; the chancellor was formerly the bishop of Salisbury, but is now the bishop of Oxford; the registrarship and the deanery of Windsor have been united since the reign of Charles I.; the king of arms, whose duties were in the beginning discharged by Windsor herald, is Garter Principal King of Arms; and the usher is the gentleman usher of the Black Rod.
The officers of the order are the dean, the secretary, Lyon King of Arms and the gentleman usher of the Green Rod.
The chancellor of the order is the chief secretary to the lord lieutenant of Ireland, and the king of arms is Ulster King of Arms; Black Rod is the usher.
The officers of the order are the dean (the dean of Westminster), Bath King of Arms, the registrar, and the usher of the Scarlet Rod.
The lakes and rivers are well stocked with trout and other fish, and visitors have the privilege of catching a limited number with rod and line.
In their simplest form, they are merely a row of slender stakes of larch or other wood driven into the ground, and connected by a slight rod or fillet at top. The use of iron rails has now been almost wholly discontinued on account of metallic substances acting as powerful conductors of both heat and cold in equal extremes.
The axis N 0 passes through the brass piece M, which stands on an insulating pillar of glass, and supports the plates A and C. At one extremity of this axis is the ball D, and the other is connected with a rod of glass, N P, upon which is fixed the handle L, and also the piece G H, which is separately insulated.
33) upon the protruding end, F, of the rod, transmitted to the still undrawn part, E, squeezes the yielding metal of the rod against the hard unyielding die, C. As when a half-opened umbrella is thrust ferrule-foremost between the balusters of a staircase, so when the rod is drawn forward, its yielding metal is folded and forced backwards and centrewards by the resistance of the unyielding die, and thus it is reduced in diameter and simultaneously lengthened proportionally, without material change of volume or density.
34), much as, the rod is drawn through the die in fig.
I, the lift cylinder is in hydraulic connexion with a pair of short cylinders placed one above the other, the pistons working in them being connected together by a common rod.
Below the piston of the upper cylinder is an annular space E (surrounding the common piston rod) with a capacity equal to the maximum displacement of the liftram, while the corresponding annular area C of the piston of the lower cylinder is just large enough when subjected to the working water pressure to enable the work of lifting the net load to be done and any friction to be overcome.
I) may be on the top of a small rod r, fixed at its lower end by plaster of Paris in a watch S glass w, and carrying a disk or sphere of lead at 1.
If the loaded rod is elastic its lower end may be fixed in a stand, and the spherically curved base w is no longer required.
3) consists of an ordinary pendulum diagrammatically represented by ab, connected by a universal joint to an inverted pendulum dc. The latter, which is a rod pointed at its lower end and loaded at c, would be unstable if it were not connected with b.
5, consists of a rod, op, free to swing like a gate round a vertical or nearlyph::: m vertical axis, oo', and loaded at some point b.
In practice the weight b is pivoted on the rod whilst its outer end, bp, which writes on a smoked surface, is made extremely light.
To avoid the possi bility of displacements clue to magnetic influences, the needle may be replaced by a brass or glass rod.
This cylinder, which is suspended from a stand rigidly attached to the earth, has a vertical hole in its centre extending from its upper surface to its centre of gravity, and to the bottom of this well a light rod is fixed.
The motion of the frame is communicated to this rod by an extension of the frame which makes contact with it just above its point of attachment to the well.
The motion of the rod consequent to a motion of the case is modified by the projecting axle of the stationary mass, and after much magnification is recorded on a sheet of smoked paper.
The main use of it was for small vases; these were formed upon a core of sandy paste, which was modelled on a copper rod, the rod being the core for the neck.
The whole was then heated until it perfectly adhered, and the mass was drawn out lengthways so as to render the design far more minute, and to increase the total length for cutting up. The rod was then sliced across, and the pieces used for inlaying.
A broken lump would then be heated to softness in the furnace; rolled out under a bar of metal, held diagonally across the roll; and when reduced to a rod of a quarter of an inch thick, it was heated and pulled out into even rods about an eighth of an inch thick.
The term was first used by Musschenbroek to denote an instrument wherein the expansion of a metal rod measured the temperature.
In J three signs are given for the purpose of reassuring Moses, only one of which is wrought with the rod (iv.
17 (E) the reference is clearly to entirely different signs, probably the plagues of Egypt, which according to E were invariably wrought by "the rod of God."
Apart from the literary characteristics which clearly differentiate this narrative from the preceding accounts of J and E, the following points of variation are worthy of consideration: (I) The people refuse to listen to Moses; (2) Aaron is appointed to be Moses' spokesman, not with the people, but with Pharaoh; (3) one sign is given (not three) and performed before Pharaoh; (4) the rod is turned into a reptile (tannin), not a serpent (n(thash).
They are brought about by "the rod of God," which Moses wields, the effect being instantaneous and all-embracing.
7aa, rob, 15a, 19a, 20a), from which it may be gathered that Moses divided the waters by stretching out his rod, thus presupposing that the crossing took place by day, and that the dark cloud which divided the two hosts was miraculously caused by the angel of God.
P also represents the sea as divided by means of Moses' rod, but heightens the effect by describing the crossing as taking place between walls of water (xiii.
in whose hand the revivified Nero becomes a rod of chastisement.
19) but by the rod, like the child (v.
The axis of rotation AB bears a rigidly attached rod DBC inclined to it at an angle equal to the sun's polar distance.
X is the mirror rotating about the point E, and placed so that (if EB is the horizontal direction in which the rays are to be reflected) (I) the normal CE to the mirror is jointed to BC at C and is equal in length to BE, (2) the rod DBC passes through a slot in a rod ED fixed to, and in the plane of, the mirror.
rod as in Foucault's construction, and BD is another rod which can be set to the direction in which the rays are to be reflected.
The rods BC and DB carry two small rods EF, GF jointed at F; at this joint there is a pin which slides in a slot on the rod BH, which is normal to the mirror X.
Rod, Essai sur Goethe (1898); A.
Huygens contrived some ingenious arrangements for directing such telescopes towards any object visible in the heavens - the focal adjustment and centring of the eyepiece being preserved by a braced rod connecting the objectglass and eye-piece.
The wheel W is therefore mounted on a guided rod, which is forced upwards by suitable levers and weights, and this relief of pressure is precisely proportional to the pressure on the respective bearings.
The displacer (E),which takes its motion through a rod (I) from a rocking lever (F) connected by a short link to the crank-pin, is itself the regenerator, its construction being such that the air passes up and down through it as in one of the original Stirling forms. The cooler is a water vessel (G) through which water circulates from a tank (H).
i t a brass rod passes which terminates in a chain, or better still, three elastic brass springs, which make good contact with the inner coating.
The rod terminates externally in a knob or screw terminal.
9-I I), and together with Hur he was at the side of Moses when the latter, by means of his wonder-working rod, enabled Joshua to defeat the Amalekites (xvii.
The post-exilic narratives give him a greater share in the plagues of Egypt, represent him as high-priest, and confirm his position by the miraculous budding of his rod alone of all the rods of the other tribes (Num.
Aaron's Rod >>
According to Cornish tradition, the divining or dowsing rod is guided to lodes by the pixies, the guardians of the treasures of the earth.
Specimens of eight and ten pounds weight have been taken by rod and fly fishermen from the Big Laramie river.
It is a very powerful oxidant; a mixture of potassium chlorate and sugar in about equal proportions spontaneously inflames when touched with a rod moistened with concentrated sulphuric acid, the chlorine peroxide liberated setting fire to the sugar, which goes on burning.
The sign of charge is then determined by holding near the electroscope a glass rod rubbed with silk or a sealingwax rod rubbed with flannel.
If the approach of the glass rod causes the leaves in their final state to collapse, then the charge in the rod was positive, but if it causes them to expand still more the charge was negative, and vice versa for the sealing-wax rod.
Formerly it was usual to insulate the rod of the electroscope by passing it through a hole in a cork or mass of sulphur fixed in the top of the glass vessel within which the gold leaves were suspended.
A further improvement consisted in passing the metal wire to which the gold leaves were attached through a glass tube much wider than the rod, the latter being fixed concentrically in the glass tube by means of solid shellac melted and run in.
The electroscope is provided with a charging rod C. In a dry atmosphere sulphur or amber is an early perfect insulator, and hence if the air in the interior of the box is kept dry by calcium chloride, the electroscope will hold its charge for a long time.
In using the instrument the insulated rod to which the gold-leaf is attached is connected to the conductor, the potential of which is being examined.
The problem of a rod suspended by strings attached to two points of it is virtually identical, the tensions of the strings taking the place of the reactions of the planes.
Again, if two bodies are connectedbya string or rod, and if the hypothetical displacements be adjusted so that the distance between the points of attachment is unaltered, the corresponding stress may be ignored.
As an example of circular shifting may be cited the motion of the coupling rod, by which the parallel and equal cranks upon two or more axles of a locomotive engine are connected and made to rotate simultaneously.
The coupling rod remains always parallel to itself, and all its points describe equal and similar circles relatively to the frame of the engine, and move in parallel directions with equal velocities at the same instant.
The link by which they are connected is a rigid rod or bar, which may be straight or of any other figure; the straight figure being the most favorable to strength, is always used when there is no special reason to the contrary.
To find the ratio of these velocities, produce C1T~, C2T, till they intersect in K; K is the instantaneous axis of the connecting rod, and the velocity ratio is ci :v2 ::KTi :KT2.
Eccentric.An eccentric circular disk fixed on a shaft, and used to give a reciprocating motion to a rod, is in effect a crank-pin of sufficiently large diameter to surround the shaft, and so to avoid the weakening of the shaft which would arise from bending it so as to form an ordinary crank.
The line cb has been called the velocsty image of the rod, since it may be looked upon as a scale drawing of the rod turned through 90 from the actual rod.
124), then a vector drawn from 0 to any point on the new drawing of the rod will represent the velocity of that point of the actual rod in magnitude and direction.
It will be understood that there is a new velocity diagram for every new configuration of the mechanism, and that in each new diagram the image of the rod will be different in scale.
An important property of the diagram is that if points X and x are taken dividing the link CB and the whole acceleration of B about C, namely, cb in the same ratio, then Ax represents the acceleration of the point X in magnitude and direction; cb is called the acceleration image of the rod.
In practice reciprocation is usually effected through a connecting rod, as in the case of steam engines.
In balancing the mechanism of a steam engine it is often sufficiently accurate to consider the motion of the pistons as simple harmonic, and the effect on the framework of the acceleration of the connecting rod may be approximately allowed for by distributing the weight of the rod between the crank pin and the piston inversely as the centre of gravity of the rod divides the distance between the centre of the cross head pin and the centre of the crank pin.
The assumption that the pistons of an engine move with simple harmonic motion is increasingly erroneous as the ratio of the length of the crank r, to the length of the con oecting rod 1 increases.
Dalby, On the Balancing of the Reciprocating Parts of Engines, including the Effect of the Connecting Rod (ibid., 1901).
131 AO represents an upright axis or spindle; B a weightcalled a bob, suspended by rod OB from a horizontal axis at 0, carried by the vertical axis.
In finding the position in which the bob will revolve with a given angular velocity, a, for most practical cases connected with machinery the mass of the rod may be considered as insensible compared with that of the bob.
If the rod of a revolving pendulum be jointed, as in fig.
132, not to a point in the vertical axis, but to the end of a projecting arm C, the position in which the bob will revolve will be the same as if the 0 rod were jointed to the point 0, where its prolongation cuts the vertical axis.
I28.* The Connecting Rod Problem.A particular problem of practical importance is tbe determination of the force producing the motion of the connecting rod of a steam-engine mechanism of the usual type.
The methods of the two preceding sections may be used when the acceleration of two points in the rod are known.
l3ennett3 which is as follows: Let OK be the crank and KB the connecting rod.
On the connecting rod take a point L such that KLXKB =KO2.
Then, the crank standing at any angle with the line of stroke, draw LP at right angles to the connecting rod, PN at right angles to the line of stroke OB and NA at right angles to the connecting rod; then AO is the acceleration of the point B to the scale on which KO represents the acceleration of the point K.
The finding of F may be continued thus: join AK, then AK is the acceleration image of the rod, OKA being the acceleration diagram.
Through G, the centre of gravity of the rod, draw Gg parallel to the line of stroke, thus dividing the image at g in the proportion that the connecting rod is divided by G.
rod being ascertained, F can be immediately calculated.
To find a point in its line of action, take a point Q on the rod such that KG X GQ = R2, R having been determined experimentally by the method of i25; join G with 0 and through Q draw a line parallel to BO to cut GO in Z.
- As has already been indicated, a solid subcylindrical elastic rod, the notochord, surrounded by a sheath of laminar connective tissue, the cordal sheath, lies above the alimentary canal in contact with its dorsal wall, and extends beyond it both in front and behind to the obtusely pointed extremities of the body.
Dalibard (1703-1779) and others in France had erected a long iron rod at Mar11, and obtained results agreeing with those of Franklin.
John Canton (1718-1772) made the important contribution to knowledge that electricity of either sign could be produced on nearly any body by friction with appropriate substances, and that a rod of glass roughened on one half was excited negatively in the rough part and positively in the smooth part by friction with the same rubber.
This platen had a perpendicular motion, being guided in grooves and worked by a connecting rod fixed to a cross beam and crank, which acquired its motion from the main shaft.
The official insignia of the flamen Dialis (of Jupiter), the highest of these priests, were the white cap (pileus, albogalerus), at the top of which was an olive branch and a woollen thread; the laena, a thick woollen toga praetexta woven by his wife; the sacrificial knife; and a rod to keep the people from him when on his way to offer sacrifice.
Under the multiple system anodes and cathodes are placed alternately, all the anodes in one tank being connected to one rod, and all the cathodes to another, and the potential difference between the terminals of each tank is that between a single pair of plates.
virga, rod), one who carries a "verge" or staff of office.
A brazen Triton on the summit, with a rod in his hand, turned round by the wind, pointed to the quarter from which it blew.
If we next introduce a new function of f and write f .f 4(f) d f =Il (f), (23) then m m' II(f) will represent - (I) The work done by the attractive force on the particle m, while it is brought from an infinite distance from m' to the distance f from m'; or (2) The attraction of a particle m on a narrow straight rod resolved in the direction of the length of the rod, one extremity of the rod being at a distance f from m, and the other at an infinite distance, the mass of unit of length of the rod being m'.
Magnus showed that the stream of spherules may be diverted into another path by the attraction of a powerfully electrified rod, held a little below the place of resolution.
An easy way of testing this conclusion is to excite the extreme tip of a glass rod, which is then held in succession to the root of the jet, and to the place of resolution.
bacillus, little rod or stick.
This consisted of a paf3Sos or bronze rod; a 7rM6aTcy, a small disk or basin, resembling a scale-pan; a larger disk (XEKavis); and (in 1 The epithet Kara&ros (let down) may refer to the rod, which might be' raised or lowered as required; to the lower disk, which might be moved up and down the stem; to the moving up and down of the scales, in the supposed variety of the game mentioned below.
The first specimen of the apparatus found at Perugia resembles a candelabrum on a base, tapering towards the top, with a blunt end, on which the small disk (found near the rod), which has a hole near the edge and is slightly hollow in the middle, could be balanced.
At about a third of the height of the rod is a large disk with a hole in the centre through which the rod runs; in a socket at the top is a small bronze figure, with right arm and right leg uplifted.
In the first the smaller disk was placed on the top of the rod, and the object of the player was to dislodge it with a cast of the wine, so that it would fall with a clatter on the larger disk below.
Meliarakes, IQTopta roD Bao - tXitov NcKacas Kai TOU D H7rELpou (Athens, 1898).
They are known under the name of Sagais, who numbered 11,720 in 1864, and are the purer Turkish stem of the Minusinsk Tatars, Kaibals, and Kizil or Rod Tatars.
6) and consists of a short, hollow rod, the wall of which is composed of the two bodylayers, ectoderm and endoderm, enclosing a cavity continuous with that of the gastrovascular system.
(ii.) The divining rod is the best-known example of this class; divination depending on automatic movements of this sort is found at all stages of culture; in Australia it is used to detect the magician who has caused the death of a native; in medieval and modern times water-divining or dowsing has been largely and successfully used.
In this figure the rod a, b, hinged at x, represents the wing.
This author, distinguished alike as a physiologist, mathematician and mechanician, describes and figures a bird with artificial wings, each of which consists of a rigid rod in front and flexible feathers behind.
There are three points in Borelli's argument to which it is necessary to draw attention: (r) the direction of the down stroke: it is stated to be vertically downwards; (2) the construction of the anterior margin of the wing: it is stated to consist of a rigid rod; (3) the function delegated to the posterior margin of the wing: it is said to yield in an upward direction during the down stroke.
If a rigid rod, or a wing with a rigid anterior margin, be made to vibrate, the vibration is characterized by an unequal jerky motion, at the end of the down and up strokes, which contrasts strangely with the smooth, steady fanning movement peculiar to natural wings.
Borelli's artificial wing, it will be remembered, consists of a rigid rod in front and a flexible sail behind.
He describes two artificial wings, the one composed of a rigid rod and sail - the rod representing the stiff anterior margin of the wing; the sail, which is made of paper bordered with cardboard, the flexible posterior margin.
r e, Anterior margin of the right wing,consisting of a rigid rod.
pertica, a pole or rod used for measurement), a bar or rod used for various purposes, as .e.g.
A certificate of conduct while under Temple's roof was required by all the Irish bishops he consulted before they would proceed in the matter of his ordination, and after five months' delay, caused by wounded pride, Swift had to kiss the rod and solicit in obsequious terms the favour of a testimonial from his discarded patron.
His miscellanies, in some of which his satire made the nearest approach perhaps ever made to the methods of physical force, such as A Meditation upon a Broomstick, and the poems Sid Hamet's Rod, The City Shower, The Windsor Prophecy, The Prediction of Merlin, and The History of Vanbrugh's House, belong to this period.
It is usually sent on the market in the form of sticks, which were at one time prepared by sucking the molten material up glass tubes; but the dangers to the workmen and other disadvantages of this method have led to its replacement by a continuous process, in which the phosphorus leaves the melting-pot for a pipe surrounded by water, in which it solidifies and can be removed as a continuous rod.
A rod, connected at its lower end with the steelyard, carries at its upper end a horizontal dividing knife, which cuts off the flow from the shoot when the steelyard kicks.
The rod which transmits the pull of the long body lever of the platform machine to the knifeedge at the end of the short arm of the steelyard is continued up - wards, and by a simple mechanical arrangement transmits to an upper steelyard any additional pull of the long body lever due to the weight of goods placed on the platform.
Above the horizontal bar, and parallel with it, is a rod which is connected at its ends with the lower ends of the vertical racks, and at its middle with the horizontal bar.
And the machine is arranged to weigh goods up to 8 lb with the fixed weight only on the pendulum, and up to 16 lb with an additional weight which can be readily slipped on to the pendulum rod.
14), and the end of the lever rests on the stirrup end of a short vertical rod.
The upper end of this rod is formed into a loop, and this loop pulls upon a knife-edge which is fixed to a short lateral arm rigidly attached to a vertical disk, and this disk turns in bearings formed in the frame of the machine.
In order to deaden the vibrations of the index arm when weighing goods a vertical rod is attached to the lever from the lever machine near its left-hand end, and this rod carries on its lower end a plunger which works in a closed cylindrical dash-pot containing oil or glycerin.
At the bottom of the vertical leg from the goods-pan there is also a projecting piece which is attached to the top of a vertical piston rod, the piston of which plays in a dash-pot of glycerin as the beam sways, and deadens the vibrations of the index arm.
As the uppermost compartment fills, the weights end of the beam rises, and by means of a vertical rod suc - cessively operates on detents connected with the rotation of the two brushes, and stops them in turn.
And when the short brush is stopped a rod from the shaft frees a spring detent which keeps the drum in position and tips it over.
The clutch mechanism is freed at the proper time by the action of the vertical rod at the end of the beam, and the brushes then he 4-lb weight is being lifted.
Sugar Weighing M the frame of the ma chine, and transmit the weight of the hopper by means of an intermediate lever and a vertical rod to the indicator lever.
The trucks or other receptacles containing the coal, &c., are drawn upon the platform of the machine, and the pull of the load is transferred by a vertical rod at the left-hand end of the machine to the knife-edge on the short arm of the steelyard, whose fulcrum is carried on bearings in the frame.
By means of a horizontal rod the same drop of the steelyard also locks ne.
It consists of a platform which is carried by levers arranged in the manner of an ordinary platform machine, which are connected with the registration mechanism by a vertical rod.
This rod is continued upwards by a pair of thin nickel bands which are led right and left over two horizontal cylinders, round which they partly wrap, and to which they are firmly 'attached.
The diameter of the middle part of the cylinders is greater than that of the ends, and the bands from the vertical rod are led over the middle part.
When the load comes upon the platform the pull of the vertical rod is transmitted by the nickel bands to the cylinders around which they are wrapped, and causes them to revolve.
A fine cylindrical rod or fibre (the so-called solid axis or virgula) becomes developed in a median groove in the dorsal wall of the polypary, and is sometimes continued distally as a naked rod.
by laying his rod (vindicta) on the slave and claiming him as free (vindicatio in libertatem).
Then the owner also laid his rod on the slave, declaring his intention to enfranchise him, and the praetor by his addictor confirmed the owner's declaration.
For the withdrawal of the residual coke at the end of the carbonization, the lower mouthpiece door is opened, the barrier removed and the coke in the lower part of the retort is "` tickled" or gently stirred with an iron rod to overcome a slight adhesion to the retort; the entire mass then readily discharges itself.
- Ferrous sulphide, FeS, results from the direct union of its elements, best by stirring molten sulphur with a white-hot iron rod, when the sulphide drops to the bottom of the crucible.
Take a rod LMN bent at right angles at M, such that MN= AB; let the leg LM always pass through a fixed point 0 on AB produced such that OA = CA, where C is the middle point of AB, and cause N to travel along the line perpendicular to AB at C; then the midpoint of MN traces the cissoid.
They were variously called aisumnetai, brabeutai, agonarchai, agonodikai, athlothetai (at Athens), eabdouchoi or eabdonomoi (from the rod or sceptre emblematic of their authority), but their functions were generally the same.
In addition to the organized industry which exists in these salmon districts, there is a good deal of ordinary rod and line fishing in the higher reaches of the larger rivers and good trout fishing is obtainable in many districts.
Anne of Austria, a devoted but unintelligent Ed~cat1Ion mother, knew no method of dealing with her son, save devotion combined with the rod.
The object can be held firmly on the stage plate B by cramps C. On the lower side of the stage plate are the condenser and the diaphragms, and the illuminating mirror J is held by a rod D fixed to the stage plate.
According to some legends he gained the fire by holding a rod close to the sun.
affliction by the rod of his wrath.
air valvetems are the servo air inlet non-return valve attachment and the push rod seal between the servo and the brake master cylinder.
The rod was now arched right over and I panicked as it almost had me in the river with it.
Because they shrink, cast resins cannot be easily reinforced with internal armatures like steel rod.
The tiles can be clipped onto a 8mm diameter steel rod, rope or nailed onto a wooden batten.
This rod has a pleasing through action and when extended, could easily be mistaken for a two piece standard carp blank.
Slimmer and lighter than rod blanks available at that time, they became an established success.
Early afternoon I had a single bleep from my left hand rod.
braze diagram opposite shows how the copper-zinc alloy (brazing rod) forms a joint between the two pieces of steel sheet.
Since writing the above I have been able to source a suitable phosphor bronze rod of diameter 1 1/8 inches from Classic Marine.
buddleia flower is practically finished, now, Michaelmas Daisy, Golden Rod and Sedum are still good places to look for butterflies.
butt cap is a new round stainless steel design that will integrate into a stainless V rest which screws into a rod pod.
B Take off the wheel For a hub gear, you need to disconnect the cable and take out the delicate indicator rod first.
The part of Rod, the assistant caretaker in Series 13, was played by Wayne Norman.
The carbon cathode is added, and the rod inserted, pushing the paper against the walls of the cans.
The cleaning rod comes with cleaning cloth and polishing cloth.
Here the crack continues to propagate, although the stresses in the rod become compressive.
con rod including extra diameter for the press fit.
If the neck is too concave (action too high ), turn the truss rod nut clockwise to remove excess relief.
contrail rod was used to attach them to the fuselage.
They include a coronet, a rod, a ring, a sword and a mantle.
countersinkative brass rod is mounted onto a cast backplate with 2 countersunk screwholes for fixing.
It uses the Li type con rod with a stepped crankpin of 20mm and wasn't hardened.
When using a 58mm crank with an eccentric crankpin and Rotax rod, 60 or 61mm strokes can be gained.
August 16 2003 © Colin Henderson A closer view of the inside right crosshead minus connecting rod and gudgeon pin.
The Biblically minded may use the cubit for medium-scale measurement, otherwise the use of the rod, pole or perch is recommended.
Then you spot the fully polished steering damper with chromed rod fixed to the steering head with an aluminum clamp.
dapping rod the fly can be touched onto the surface.
The Serpent Rod is also the symbol of Aesculapius, the patron deity of Healing.
disconcerting to see that the shorter rod has the longer tube!
divinepathological sensitivity to brands makes her the perfect divining rod for an ad agency that wants to test a new logo.
donuts of that color on the yellow rod on top of the machine.
dousea result, like a classic dousing rod, very slight subconscious hand movements can cause wild changes in where the antenna points.
dowel rod into the flower pot with the plaster of paris.
dowseh a dowsing rod it is easy to find the subterranean water veins under a standing stone.
dozeaig Brown was sat on an old tree stump dozing in the late morning sun, his fishing rod in hand.
dregs of tea from now freezing cups, I had a bleep on my left hand rod.
Dean has a rare condition known as rod and cone dystrophy, which he's had since the age of nine.
rod Emory: You're correct, I've officially hung up my helmet, at least for the time being.
The shape of enamel rod sections of all layers composing the enamel projection was distorted.
Professional rod builders use either two pack epoxy high build resin, or sometimes a UV curing system.
We will continue vigorously with our blitz program to bring rod license evasion down.
fabric protector cap to protect the guides for storage and travel and with a cloth rod bag.
feeder rod with red maggot fishing midway across lake.
fibre optical Fiber An optical fiber is a solid rod of glass, finer than a strand of human hair.
Attach a narrow wrought iron curtain rod with decorative finials to the wall.
fly fishing is really quite easy; to fish a river like the Kelvin you will need a suitable rod.
Suddenly, he asked the man if he had a fishing rod he might borrow.
fishing rod licenses, which are required by law when angling for salmon and freshwater fish.
float ledger rod.
fly rod, it can also be built as a useful shrimping and worming rod.
With minor modification to the existing fittings, Future Fibers was able to replace the rod forestay with a stretch equivalent PBO cable.
We will place an order for the missing coupling rod forgings and other parts will have to be purchased.
Now Rod has got his hands oily again stripping down a Miata 1.8 model in an ordinary domestic garage, using ordinary tools.
And Sally caught the large halibut with a bargain $ 39 Penn rod and reel combo.
harangueave endlessly repeated the same clip of Rod haranguing the Assembly.
We had a brilliant headmistress who ruled us with a rod of iron, Miss Bennett.
helix rod axis rather than the actual CA coordinates.
hi-hat pull rod.
Dimensions 6'9 " x 8 " (206 x 22cm) £ 17.99 Shakespeare Rod holdall - A holdall for the specialist carp angler.
The pick of the products for me tho are the new Apache Speed rod holdalls.
A customized hot rod with a solid Las Vegas chassis.