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We should not only be able to use this uranium and thorium; not only should we have a source of power so potent that a man might carry in his hand the energy to light a city for a year, fight a fleet of battleships, or drive one of our giant liners across the Atlantic; but we should also have a clue that would enable us at last to quicken the process of disintegration in all the other elements, where decay is still so slow as to escape our finest measurements.
"With the limitless energy of the atom?" exploded Harrison. "They don't know about atomic energy. Probably never did. Must have used some other principle in their space-ship." "Then," snapped the captain, "what makes you rate their intelligence above the human? We've finally cracked open the atom!" "Sure we have. We had a clue, didn't we? Radium and uranium.
Of the methods of precipitating the compounds of the protoxide and estimating the acid, that of the phosphate is by far the most accurate, titrating with uranium solution; 99.82 is a nearly constant average with me, much depending on the operator's familiarity with the uranium process. The methods of Lenssen, or ferricyanide of potassium method, yields very widely differing results.
He had secretly hoped that the uranium disturbances would cause the ship to crash, thus eliminating his difficulties before they could begin, but he couldn't help admiring the way the big cruiser was handled. When the hatch opened and Captain Strong stepped out, resplendent in his black-and-gold uniform, there was a spontaneous roar of welcome from the ground.
Since pitch-blende contained uranium, or uranium salts, he surmised that a somewhat similar result might be obtained with the ore itself. He therefore prepared a photographic plate wrapped in black paper, intending to attempt making an impression on the plate of some metal body interposed between it and the pitch-blende.
That explains why you people never found any evidence that the Martians used nuclear energy." "That's a uranium atom," Captain Miles mentioned. "It is?" Sid Chamberlain asked, excitedly. "Then they did know about atomic energy. Just because we haven't found any pictures of A-bomb mushrooms doesn't mean " She turned to look at the other wall.
"That may be all right for boys," grumbled Professor Sykes, still smarting under the refusal of his violent protest at being taken from his uranium studies and placed in charge of the school problem. "But what about the girls? There are quite a few of them and they need special consideration." "What kind of consideration?" asked Vidac. "Well, whatever it is a girl has to know.
Everything is complete and we are just about to begin loading." "Sorry, Rovol, but we'll have to make a couple of changes have to rebuild the exciter or build another one," and Seaton rapidly related what they had learned, and what they had decided to do. "Of course, uranium is a much more efficient source of power," agreed Rovol, "and you are to be congratulated for thinking of it.
The uranium could be located in another sector of the satellite, on the other side, maybe. It could be throwing radiation out into space without affecting us here." "You mean we're under the effects?" asked Astro. "Looks like it," replied Tom. "But on the other hand," he continued, "why wasn't there some report of it when the first expedition came out to look over the satellite?"
Sir J. J. Thomson, pursuing his research, found in 1896 that compounds of uranium sent out rays that could penetrate black paper and affect the photographic plate; though in this case the French physicist, Becquerel, made the discovery simultaneously' and was the first to publish it.
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