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Updated: May 3, 2025
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;
To the Sinus Iridium or the Sinus Roris, that is Rainbow Gulf and Dewy Gulf whose glittering lights, alas! give forth no real illumination to guide our stumbling feet, whose sun-tipped pinnacles have less substance than a dream, whose enchanting waters all evaporate before we can lift a cup-full to our parched lips!
"By combining the hyper-sulphate of iridium with the fumes arising from oxide of copper heated to 1000 C. and combining with picric acid in the proportions described in formula x 18, a reaction, the nature of which I have not fully determined, follows. This must be performed with extreme care owing to the unstable nature of the benzene compounds." "Picric acid? Benzene compounds?
"That was how they got Dunark, undoubtedly," said Crane, as he sent a brief message to the girls, assuring them that all was well, as he had been doing at every respite. "But why were we not overcome at the same time?" "They must have had the current tuned to iridium, and had to experiment until they found the right wave for steel," Seaton explained.
Solid platinum! This whole planet is built of platinum, iridium, and noble alloys the only substances known that will literally last forever. Believe me, ace of my bosom, I don't wonder that it cost them lives to build it with their conditions, I don't see how they ever got it built at all."
It therefore pays to elevate the temperature of the filament as high as possible. Unfortunately the most refractory metals, such as platinum and alloys of platinum with iridium, fuse at a temperature of about 3450 degrees Fahrenheit. Electricians have therefore forsaken metals, and fallen back on carbon for producing a light. In 1845 Mr.
In July, 1859, he lit up one of the rooms of his house at Salem, Massachusetts, every evening with such lamps, using in them small pieces of platinum and iridium wire, which were made to incandesce by means of current from primary batteries.
Thus there is a strong resemblance between platinum and iridium; bromine and iodine; iron, manganese, and magnesium; cobalt and nickel; phosphorus and arsenic; but this resemblance consists mainly in their forming isomorphous compounds in which these elements exist in the same relative proportion.
Of course, each fraction will probably be an alloy of one kind or another, but I think maybe I'll be able to make them do." "But mayn't that whole chunk be a pure metal?" "It's conceivable, but not probable. There, she's beginning to separate at just below eighteen hundred! Platinum group coming out now, I think platinum, rhodium, iridium, and that gang, you know.
At the moment he merely swallowed quickly to get the words out. "Right! And if we cut too far down we can plate the bearing up to thickness and cut it down again " "Plate it up with iridium," said the Chief. He waved a steak knife. "Man! This is gonna be fun! No tolerance you say, Joe?" "No tolerance," agreed Joe. "Accurate within the limits of measurement." The Chief beamed.
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