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The discovery of the radio-active properties of uranium was followed about two years later by the discovery that thorium, and the minerals containing thorium, possess properties similar to those of uranium. This discovery was made independently and at about the same time by Schmidt and Madame Skaldowska Curie.
Further investigations by Lord Kelvin, Beattie, Smolan, and Rutherford confirmed the fact that, like the Roentgen rays, the uranium rays not only acted upon the photographic plate but discharged electrified bodies. And what seemed the more wonderful was the fact that these "Becquerel rays," as they were now called, emanated spontaneously from the pitch-blende.
It perhaps would not have occurred to one of us, since the heavy metals of that highly efficient group are very rare here. Building a new exciter for uranium is a simple task, and the converters for the corona-loss will, of course, require no change, since their action depends only upon the frequency of the emitted losses, not upon their magnitude."
It is biotic energy which guides the development of the ovum, which regulates the exchanges of the cell, and causes such phenomena as nerve impulse, muscular contraction, and gland secretion, and it is a form of energy which arises in colloidal structures, just as magnetism appears in iron, or radio-activity in uranium or radium, and in its manifestations it undergoes exchanges with other forms of energy, in the same manner as these do among one another."
"Look, the drill head is dull." "That trap door!" Tom exclaimed. "It leads to a mine. Miles and Brett have discovered high-grade uranium right here on Titan where everyone thought there was nothing but crystal!" Astro nodded grimly. "And that isn't all. This room is free of ammonia gas."
He set up a series of integrals and, machine after machine, in a space left vacant by the rapidly-vanishing store of uranium, there appeared inside the fourth skin of the Skylark a row of gigantic generators, each one adding its hellish output to the already inconceivable stream of energy being directed at the foe.
Then we just sit tight and wait until the situation clears up here on Titan." "What about that investigation?" asked Miles, keeping his eyes on the cadets, who were now staggering back to the stairs, each carrying a heavy lead box containing the precious uranium pitchblende. "What can an investigation prove?" snorted Brett. "I don't know. Walters and Strong are pretty smart cookies."
Our joy was very great when, after a long inspection, he informed us that he had discovered uranium, and that it now remained only to submit it to certain operations in a laboratory in order to prepare the substance that was to give renewed life to those lilliputian monsters in the car, which fed upon men's breath and begot power illimitable.
Even in the absence of agreement, we must not stockpile arms beyond our needs or seek an excess of military power that could be provocative as well as wasteful. It is in this spirit that in this fiscal year we are cutting back our production of enriched uranium by 25 percent. We are shutting down four plutonium piles. We are closing many nonessential military installations.
He used to tell me that he often wondered why he hadn't taken up this line before the world of energy he now set out to explore, waves in that tremendous range between those we hear and those we see. It was natural that he should then come to the most prominent radio-active elements, uranium, thorium, and radium.
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