Lead is precipitated either as PbO{2} at the anode from a nitric acid solution or as metal at the cathode from an ammonium oxalate solution.
I have in the above experiments demonstrated the normal effect of anode in inducing expansion and acceleration of rate of growth; the cathode was shown to induce contraction and retardation of growth.
If the cathode induced a retardation, the anode might be expected to induce an acceleration of growth.
The object of this investigation was to determine whetheranode and cathode exerted similar discriminative and opposite effects on growth.
Acceleration of rate of growth under anode (Kysoor).
On applying the anode to the growing region, there was an enhancement to one and half times the normal rate (Fig.
Unilateral application of anode and cathode thus induces appropriate curvatures in pulvinated and in growing organs.
Before describing the effect of unilateral application of an electrical current in inducing tropic curvature, I shall give an account of the polar effect of anode and cathode on the pulvinated and growing organs.
The effect of anode was precisely the opposite; the induced expansion was exhibited either by reduction of normal limit of systolic contraction, or by arrest of pulsation at diastole.
Under strong currents, contraction takes place both at the anode and the cathode.
LiCl{2} in the path of cathode rays gives off a blue light; in the path of anode rays a red light; NaCl a blue cathodoluminescence and a yellow anodoluminescence.
The piece of copper containing the silver may be used again in the place of the silver anode until it has become dissolved, or it may be removed by any other means, if preferred.
The piece of silver or anode being lowered into the solution, upon the immersion of the work, an almost instantaneous deposit of fine silver takes place, the thickness of which depends entirely upon the period of immersion.
If sodium chloride and lead be melted in a crucible, the former being connected with the cathode and a carbon anode immersed in the lead, then the lead dissolves sodium and chlorine is disengaged as gas.
The depressing influence of the anode in this case may be expected to lower, to a certain extent, the normal excitability of the responding muscle.
But the excitability is unaffected at a point equally distant from anode and cathode.
The point of stimulation and the responding pulvinus are thus situated at a considerable distance from the anode or the cathode, in the indifferent region in which there is no polar variation of excitability.
The atoms separated from each other by the electric current were called ions by Faraday; those going to the anode being anions, and those going to the cathode being kathions.
If, however, the anode be of copper instead of platinum, no sulphuric acid will be formed, neither will oxygen be given off at the anode.
To the anode he attached one of the negatives, to the cathode a small piece of iron.
He lifted the anodefrom the solution now, removed the negative, and held it up.
Place the tube in the holder by inserting the small part of the tube just above the anode arms in the upper clip; then gently lower it until it rests firmly on the lower support.
Each anode is connected to a separate side of an alternating-current circuit and is thus subject alternately to positive or negative potential.
The action of the tube is started by tilting it sufficiently, so that the mercury in the bottom of it connects the starting anode C to A.
Elkington of Birmingham, where the finest specimens of the art are to be obtained; a plate of silver being attached to the anode to supply the loss of silver in these troughs.
If the anode surface is too great, a few plates should be transferred to the cathode bars.
A large anode surface, compared with that of the article to be plated, is of paramount importance.
In this way the necessary electrical resistance can very conveniently be inserted between the anode and cathode surfaces.
He applied the current, moving the anodeand the cathode slowly.
When such glass tube, partially exhausted of air, received through its anode and cathode terminals a discharge of static electricity, a peculiar manifestation of light is seen between the anode and cathode terminals.
At the anode it appears as a peach blossom glow, and at the cathode it appears as a bluish green light.
Another important feature of the apparatus is a compound anode which consists of carbon plates, with a metal core to increase the conductivity.
The anode is treated in a special manner so as to render it non-porous and impervious to attack by the nascent chlorine evolved on its surface.
The anodes and cathodes are separated by the special diaphragms, and each vessel is thus divided into ten anodeor chlorine sections and ten cathode or caustic soda sections.
The anode sections, numbering fifty altogether, are connected by means of tubes, the inlet being at the bottom and the outlet at the top of each section.
Platinum and palladium dissolved from the anode accumulate in the solution, and are removed at intervals of, say, a few months by chemical precipitation.
Gold is left in the anode slime when copper or silver are refined by the usual processes, but if the gold preponderate in the anode these processes are inapplicable.
The centre compartment is used to hold the lead or other suitable anode and electrolyte.
The electrodes are connected with the dynamo; the anode of lead being positive and the cathode of mercury being negative.
The anode is supported on a movable frame or bracket, so it may be moved either up or down as desired, it being worked by thumb-screws at each end.
Acting upon this rule, therefore, theanode starts drawing to itself all the negative ions, in this case the atoms of chlorine, while the cathode gathers together the positive ions, the atoms of sodium.
But its course, this time, is not straight, since in order to travel from anode to cathode it has to pass through the openings in the partitions, in other words through the mercury.
The anode can be covered in such a way as to catch the gas as it bubbles upwards.
When the current of the battery or dynamo passes through the bath from the anode to the cathode, gold or silver is deposited on the spoons, and the bath recuperates its strength by consuming the gold or silver plate.
The electrodes are hung from metal rods, theanode A being a plate of gold or silver G, as the case may be, and the cathode C the spoons in question.
In all the above-mentioned processes the anode is cast from the impure metal to be refined, and the cathode consists of a sheet or plate on which the pure metal is deposited.
It should be noted that, in general, the changes occurring at the cathode are reductions, while those at the anode are oxidations.
The negative ions of an electrolyte are attracted to the anode and are discharged on contact with it.
At the anode the lead is deposited as PbO{2} and oxygen is evolved.
Also in the more severe forms of nerve injury tetanic contractions may be set up in the paralysed muscles, by closure of the current either at the anodeor kathode.
If the current be suddenly reversed, so that what was the anode becomes the kathode, a stronger contraction is obtained than by simply making and breaking the current.
The increased excitability at the kathode is katelectrotonus, and the lowered excitability at the anode anelectrotonus.
When a current is passed through an electrolyte, dissociation into ions takes place, the ions which are freed round the anode being called anions and those which are freed round the kathode being called kations.
The kations carry positive charges, hence they are repelled by the anode and attracted by the kathode.
With normal muscle the KCC (kathodal closure contraction) is stronger than that produced by the closure of the current at the anode ACC (anodal closure contraction).
The reduced metal separates out at the anode in a friable condition.
In the above mentioned exceptional cases there is formed a small quantity of peroxide which adheres to the anode as a blackish-gray deposit.
Luckow has shown that from acid solutions--no matter what may be the acid--lead is deposited at the anode as a mixture of anhydrous and hydrated peroxide of variable composition.
William Rollins, of Boston, has a hollow anode tube (B C, Fig.
The end of this anode tube is small, in order to form a sharp radiant point of light.
The amount of Cu dissolved from the copper anode equals nearly the amount deposited upon the cathode.
In decomposing other compounds, the anode is made of the metal which is to be deposited at the cathode.
If copper is to be deposited from a solution of copper sulphate the anode should be a copper plate; this keeps the solution at same strength, and avoids the opposing E.
The anode is then immersed in the solution, so as to be well covered by it, and supported in that position; the connections to the rest of the circuit are made.
To prevent the disintegrated silver which is formed on the anode from falling on to the kathode, the anode should be wrapped round with pure filter paper, secured at the back with sealing wax.
The anode should be a plate of pure silver some 30 square cm.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "anode" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: component; device; generator; parts; relay; tube
