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Updated: June 28, 2025
The same we believe may be said with regard to the great rival of the Bessemer converter, viz., the Siemens open hearth; although this forms in itself a beautiful application of the scientific doctrine that steel stands midway, as regards proportion of carbon, between wrought iron and pig iron, and ought therefore to be obtainable by a judicious mixture of the two.
A hyperspace converter like that couldn't be less than four millennia old. It was a museum piece, but the blue-black hull was as smooth and unblemished as the day it had left fabrication. Space travel would have gotten nowhere without durilium, Kennon reflected. For five thousand years men had used the incredibly tough synthetic to build their spacecraft. It had given man his empire.
Using means of unquestioned validity, he found the sun's disc to radiate 87 times as much heat, and 5,300 times as much light as an equal area of metal in a Bessemer converter after the air-blast had continued about twenty minutes.
We can not only send a current of low "pressure" from a generator of weak electromotive force through the primary coil, and thus excite a current of high pressure in the secondary coil, but we can send a current of high pressure through the secondary coil and provoke a current of low pressure in the primary coil The transformer or converter, a modified induction coil used in distributing electricity to electric lamps and motors, can not only transform a low pressure current into a high, but a high pressure current into a low.
In the narrow, methodical sense he was not a business man at all; he knew and cared nothing for its dull routine and its labyrinthine details. As a practical steel man his position is a negligible one. Though he was profoundly impressed by his first sight of a Bessemer converter, he had little interest in the every-day process of making steel.
"Take that carrion and stuff it in a mass-energy converter," he said. "And I don't want anybody to mention the name of Andray Dunnan to me again." He didn't look at them haul Dunnan's body away on a lifter-skid; he watched the fifty-odd leaders of the overthrown misgovernment of Marduk shamble away to freedom, guarded by Paytrik Morland's riflemen.
The T-247 spun on her axis, and abruptly the acceleration built up as the ion-rockets began to shudder. A faint smell of "heat" began to creep out of the converter. Immense "weight" built up, and pressed the men into their specially designed seats The gigantic ship across the way turned slowly, and seemed to stare at the T-247.
In this connection it is interesting to note that the fibrous texture referred to is imparted to wrought iron by the presence in it of a small proportion of slag from the puddling furnace, and that this can be secured in the Bessemer converter also if desired.
Following this he made what is now called a "converter," in which he could refine fifteen hundred pounds of metal in five minutes, effecting a great saving in time and fuel, and in his little establishment the old processes were thenceforth dispensed with. It was locally known as "Kelley's air-boiling process."
You get the picture now?" "They're doing the same thing on Tom's back, right here," I told Joe. "Only you can't grow fingerprints by carniculture, the way you can human tissue for grafting. They had to have palm and finger surfaces from a pair of real human hands. A pauper, dying in a free-treatment ward, her body shoved into a mass-energy converter." Then I thought of something else.
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