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So it's almost worthless, everywhere. Not much use as an industrial metal. But the osmium and uranium alloyed with it are something else. One hunk for each of our nets. Too bad there isn't more." The uranium was driving their radiation-counters wild. "Could we drag it, if there was more?" Ramos growled. "With just sun-power on these lousy shoulder-ionics?" Everything was going sour, even Ramos.
"Well, you're a star gazer, aren't you?" inquired Hooker, relighting his pipe. "Some one told me so I forget who. You must have a lot of interesting problems. They tell me that new planet of yours is full of uranium." Thornton laughed. "You mustn't believe all that you read in the papers. What are you working at particularly?" "Oh, radium and thermic induction mostly," answered Hooker.
As soon as he was free, he stepped down hard and sent the jet car racing along the highway back toward Roald City. "Jeff Jeff," asked Jane despairingly, "do you think they'll catch the boys?" "I don't know," replied Jeff grimly. "But if they are caught, the only way we can save them is to find the professor's journal and pray that the uranium report is in it."
It does release it, as a burn trickles. Slowly the uranium changes into radium, the radium changes into a gas called the radium emanation, and that again to what we call radium A, and so the process goes on, giving out energy at every stage, until at last we reach the last stage of all, which is, so far as we can tell at present, lead. But we cannot hasten it.
"Remember what happened to the instruments?" "Uranium!" exclaimed Astro. The word echoed in the kitchen like the blast of a bomb. The boys looked at each other, too startled to explain to Logan and Jane, who, though they were listening intently, were unable to fathom the boys' reasoning. "Where were you last night?" asked Jeff quickly.
This body, nevertheless, is the seat of transformations comparable to those which the study of emanations reveals in radium; Sir W. Crookes has separated from uranium a matter which is now called uranium X. This matter is at first much more active than its parent, but its activity diminishes rapidly, while the ordinary uranium, which at the time of the separation loses its activity, regains it by degrees.
There was something familiar about the table on the left wall. She tried to remember what she had been taught in school about physics, and what she had picked up by accident afterward. The second column was a continuation of the first: there were forty-six items in each, each item numbered consecutively "Probably used uranium because it's the largest of the natural atoms," Penrose was saying.
Finally, in interstellar space, Seaton threw out super-powered detector and repelling screens, anchored himself at the driving console with a force, set the power control at "molecular" so that the propulsive force affected alike every molecule of the vessel and its contents, and, all sense of weight and acceleration lost, he threw in the plunger switch which released every iota of the theoretically possible power of the driving mass of uranium.
But there can be sterilization. To begin with metals, uranium melts at 1150° centigrade, and tungsten at 3370° and iridium at 2350°. You could load such things and melt them down in space and then tow them home. And you can actually sterilize a lot of other useful materials!" The suave voice said infuriatedly; "I'll report this! You'll suffer for this!" Calhoun said pleasantly;
The relative power of radium to the X-ray is as six to one. The rays of radium have one hundred thousand times the energy of those of uranium and over one hundred times the energy of barium radiation. The scarcity of the metal will be understood when it is stated that there is far less radium in pitchblende than gold in ordinary sea water.
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