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A small metal tank was supported in a peculiar piece of apparatus, and from it led a small platinum pipe to a domed apparatus made largely of insulum. A little pool of mercury, with small red crystals floating in it rested in a shallow hollow surrounded by heavy conductors. "That's it, Tom. I wanted to show you first what we have, and why I wanted all that mercury.
Barley, buckwheat, oats, millet and rye form the staple food of the inhabitants. Mines of great value exist in the Ural, Obdorsk and Altai mountains, which produce gold, copper, iron, silver, platinum, rock-salt, marble and kaolin or china clay. Rich naphtha springs exist on the Caspian and an immense bed of coal has been discovered between the Donetz and Dnieper rivers.
One night in August they got into the phaeton attired in their full-dress suits and drove out to a dance at the Shevlins' country house, situated just outside of Baltimore. It was a gorgeous evening. A full moon drenched the road to the lustreless colour of platinum, and late-blooming harvest flowers breathed into the motionless air aromas that were like low, half-heard laughter.
The principle is applied in the following manner: A cylinder of fireclay slides in a metal tube, and has two platinum wires one one-hundredth of an inch in diameter wound round it in separate grooves. Their ends are connected at the top to two conductors, which pass down inside the tube and end in a fireclay plug at the bottom.
While I was gazing into the case, Mr. Garner opened a safe behind him, laying before me a large sapphire set with diamonds in a platinum brooch; a beautiful stone, in the depths of it gleaming a fire like a star in an arctic sky. I had not given Maude anything of value of late. Decidedly, this was of value; Mr. Garner named the price glibly; if Mrs.
She looked at the watch on her wrist, a platinum bracelet affair with an octagonal face that Dick had persuaded her to accept for a Christmas present by giving one exactly like it to Betty and Caroline. It was twenty-five minutes of five. Dinner was served every night promptly at half past six, and there was absolutely no preparation made for it, not so much as a loaf of bread ordered.
The filament is then introduced into a second glass globe charged with bicarbonate of hydrogen; it is placed between pincers that hold the carbon near its union with the platinum, and the platinum some millimeters below. These pincers are then thrown into circuit, and a powerful current is passed through the part which is to be soldered.
This method, however, is not very reliable, and was superseded by his well-known electric pyrometer. This rests on the principle that the electric resistance of metal conductors increases with the temperature. In the case of platinum, the metal chosen for the purpose, this increase up to 1,500°C. is very nearly in the exact proportion of the rise of temperature.
Draper, but to the invisible emission which precedes the appearance of any light. In the emission from the white-hot platinum wire now before you, the lightless waves exist with which we started, only their intensity has been increased a thousand-fold by the augmentation of temperature necessary to the production of this white light.
When the current is sent along these wires, the platinum glows and ignites the explosive. Detonating fuses are primed with fulminate of mercury. Springs for watches and other purposes are tempered by heating them with the current and quenching them in a bath of oil.
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