With glass tubes and air pumps, with platinum and flame, they strove for half an hour, Tom, Hamerly, and Swenton together.
Yes,” said Tom laughing, “Mrs. Rosnosky taught you to know platinum when you see it.
Who’d have thought of her recognizing platinum at a glance.
All had been done as she had directed; Bethsaba wore the pink silk wedding-dress; the platinumdiadem adorned her brow.
The platinum mines of the Ural had never produced so precious a piece of ore.
Now, do not forget the pink wedding-dress and platinum diadem.
He sent a specimen of the platinum that had been found.
I leave you my pink dress and the platinum diadem.
He was so excited that he was not even despondent over the collapse of Princeton Platinum stock, although this meant to him desperate financial straits.
I have three thousand shares of Princeton Platinum stock," Fenton went on, with the condescending air of one who elaborately explains details which he knows will not be understood.
And on the following morning when she read in the stock reports that Princeton Platinum had fallen to one and a half, she remembered her stroke of yesterday with a conscience which if not wholly clear was thoroughly satisfied.
I will take all your Princeton Platinum stock at three dollars.
He made the Princeton Platinum stock a pretext for calling upon the speculator, and endeavored to discover whether the latter had spoken, but he learned nothing.
Bear us in mind when Princeton Platinum has made your fortune, and don't look down on us.
By the way, did you know that Princeton Platinum had gone all to flinders?
Snaffle, of course, was too shrewd to ask his companion to buy Princeton Platinum stock, and indeed declared that although he had charge of putting it upon the market, he was reluctant to part with a single share of it.
Princeton Platinum is wild-cat fast enough, but it will touch four before they let the bottom drop out.
I doubt if there ever was any Princeton Platinum mine, but I did think the men who were managing it were clever enough to get it to four or four and a half before they let go.
Unless this is done, I find that glass tubes into which platinum wires have been sealed are very apt to break during or after cooling.
Owing to the very low coefficient of expansion of silica, it is not possible to seal platinum wires into silica tubes.
Then allow the platinum wires to pass through the opening D left for the purpose, and seal the glass at D round the platinum as at E.
Nor can platinum be cemented into the silica by means of arsenic enamel, nor by any of the softer glasses used for such purposes.
Introduce a platinum wire into the opening, and again allow the flame to play on the glass at that point; it will melt and close round the wire.
The openings obtained by the method above described are too large when platinum wires are to be sealed into them.
When a supply of the small rods of vitreous silica has been provided, bind a few of them round a rod of platinum (diameter say, 1 mm.
Possibly platinum wires might be soldered into the tubes (see Laboratory Arts, R.
Platinum cannot be melted in our furnaces, and is chiefly valuable in commerce when in the shape of ingots, from which it may be forged into useful forms.
Hence, when platinum coin is too abundant, it cannot, like gold, be reduced into masses by melting, but must pass through an expensive process to render it useful.
But when a piece of platinum is cut into two parts, it cannot easily be reunited except by means of a chemical process, in which both parts are dissolved in an acid.
In Russia platinum has been employed for coin; and it possesses a peculiarity which deserves notice.
A sheet of sensitive paper, albumen, gaslight, or platinum is then inserted, the frame closed up and exposed to the light until a very dark print is obtained.
It is true that he cannot reproduce their delicate colorings, but the photographs can, if so desired, be lightly printed on platinumpaper and colored as well as possible by hand.
The carbon filament is attached, by carbon paste, to shortplatinum wires that are sealed in the glass, their lower ends being connected to short copper wires that are joined to the terminals of the lamp.
They are especially useful for operating induction coils, small motors, small incandescent lamps, for heating platinum wires, etc.
In regular instruments a platinum point is used where the circuit is broken; this stands the sparking when the armature vibrates.
The silver voltameter arranged as here specified: The cathode on which the silver is to be deposited shall take the form of a platinum bowl, not less than 10 cms.
The platinum wires at the bottom must be completely covered by the mercury and the amalgam, respectively.
And on a thin platinum chain about her neck was hung one great sparkling drop of light.
She wore a simple white silk frock, and her only mark of wealth was a large diamond hanging from a thin platinum chain about her slender neck; a gem in itself worth a fortune.
The action depends upon the readiness with which spongy platinum absorbs both oxygen and hydrogen.
Tungsten is also used for filaments in incandescent lamps, and in contacts for internal combustion engines, being a substitute for platinum in the latter use.
In the United States small quantities of platinum are recovered from the gold-bearing gravels of California and Oregon, where the streams have come from areas of serpentine and peridotite.
During the war, the need for platinum for war manufactures was so urgent and the production so reduced, that restrictions against its use in jewelry were put into force in all the allied countries.
Molybdenum metal has been used to a small extent in incandescent lamps and as a substitute for platinum in electric contacts and resistances.
The deposit is unusual in that it has a comparatively high content of platinum (nearly an ounce to the ton), and is probably genetically related to acid intrusives.
Most of the platinum as used in jewelry and for electrical purposes contains iridium, which serves to harden it.
About 90 per cent of the world's crude platinum produced annually comes from the Ural Mountains in Russia.
From all these deposits, only small quantities of platinum are mined.
Gold and platinumare not attacked in the cold, but when gently heated are easily corroded.
I have had occasion to prove the efficacy of this mixture in two cases of cascabel bites, one on a buck, the other on a dog; and it occurred to me that the same explanation of its action might be given as above for the platinum salt, viz.
The spring rests upon the screw, H, with which it makes contact by platinum electrodes.
But it was found that even platinumcould not always withstand the heating effect of a strong current; and accordingly Edison looked about for some less combustible material.
The secondary is connected to a "sparking plug," which screws into the end of the cylinder, and carries two platinum points about 1/32 of an inch apart.
Through one extremity is led a platinum wire, terminating in a saucer-shaped platinum plate an inch or so across.
At the focus of this, the negative terminal, is fixed a platinum plate at an angle to the path of the rays so as to deflect them through the side of the tube.
Accordingly his transmitter contains a small disc of lampblack (a form of carbon) connected to the diaphragm, and another carbon or platinum disc against which the first is driven with varying force by the vibrations of the voice.
The thimble, l, is surrounded by an envelope, q, of platinum wire netting or other refractory material of the same form.
This flanged base is perforated with small vertical holes, m, and upon it is fixed a platinum wire cage or envelope, q.
The cap is thereby raised to a high temperature; and the platinum wire sheath becoming incandescent radiates the light.
The temperature was determined by a platinum-rhodium and platinum thermo-junction in contact with the metal.
As in Hopkinson's experiments, ring magnets were employed; these were wound with primary and secondary coils of insulated platinum wire, which would bear a much higher temperature than copper without oxidation or fusion.
The chlorides of nickel, cobalt, chromium, iron and mercury are converted into nitrides when heated with it, whilst the chlorides of copper and platinum are reduced to the metals (A.
A third platinum coil, wound non-inductively between the primary and the secondary, served to carry the current by which the ring was heated; a current of 4.
It added that on removing the outer case there had been exposed a largeplatinum ring set with a crystal, which had been laid upon the breast of the embalmed woman.
There were many rings with crystals in the case, and I had to test for the platinum to be sure of the one which I wanted.
The transmitter consists of a glass vessel supported upon a steel point and provided beneath with a platinum circle connected with a pile.
Grove that if the extremities of a piece of platinum wire be placed in a candle flame, one at the bottom and the other near the top, an electric current will flow through the wire, indicating the presence of electricity.
Each strip of platinum communicates, through a special wire, with one of the electro-magnets of the registering device (Fig.
She held out in the palm of her hand a little, heart-shaped platinum locket with a tiny but very beautiful diamond set in the center of its face, and when she turned it over on the back was engraved the intertwined letters "E.
Once she lowered her eyes to look at the little platinum watch; then raised them again with a friendly smile.
One hand in a white glove circled with a platinum watch-bracelet rested on the finger-plate, and she smiled at Beresford demurely.
She turned her little platinum watch to the light and compared it with the clock on the mantel-piece.
