Word: mica
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Near Rumney Depot is the Ruggles sheet-mica mine, oldest in the U. S. Found in combination with mica are beryl, feldspar...
Professor Clark punches a tiny hole in the ear of a rabbit, similar to the holes which women used to pierce through their ears for earrings. In the hole he puts a double window. One pane is of glass or celluloid, the other of thin mica. The panes are 1/2,000 in. apart. So soon as the window is in place, the rabbit's ear begins to heal. Blood vessels, nerves, cells, all the appurtenances of living flesh work their way between the panes. When the rabbit is fastened so that the ear hole can be placed beneath...
...isolated-eka-iodine and eka-cesium.† Last week Dr. Fred Allison and Edgar Jackson Murphy of Alabama Polytechnic Institute at Auburn, Ala., reported that they had "evidence of considerable weight for the presence" of eka-cesium in certain salts they had reduced from lepidolite, a form of mica, and pollucite, a mineral consisting chiefly of cesium, aluminum and silicon. When they break down their salts they will get a soft silvery-white metal which will look and react much as do the alkali metals lithium, sodium, potassium, rubidium and cesium. When eka-cesium is isolated, then Messrs. Allison & Murphy...
Carboloy or widia, shaped into a cutting tool, carves through cast iron, steel, copper, glass, porcelain, bakelite, mica, rubber, their combinations and what not. Carboloy or widia does everything that the finest, hardest tool steel can do, and many another job. Also they cut at much faster speeds. So efficient are they in stepping up machine shop production and in reducing shop costs, that every machinist must use the new metal, even though its present price is $500 a pound, almost the price of platinum, almost twice the price of gold...
...partly controlled, but in talking machines, even expensive ones, his intrusion was unavoidable. Of course it was not really static-the blaring, nasal voice they heard through the playing of a record-but a sound composed of the hum of the operating motor and the vibrations of the mica diaphragm of the soundbox. Driven to desperate shifts by radio competition, the Victor Talking Machine Co. last year set about eliminating this privy hobgoblin. Last week the product of their researches-the Orthophone-was demonstrated. A duralumin diaphragm is substituted for the mica one; the motor is perfectly soundless; its range...