Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 5, 2025
Horrified, Rick saw a fireman, clumsy in his protective suit, trip and fall before the oncoming flood of flaming boron hydride. Scotty moved, instinctively, his finely trained body responding with perfect co-ordination. Straight toward the oncoming flood he ran, into the edge of the flames, leaping the rapidly widening trench.
The element boron seems to have almost as marked an effect upon copper as carbon does upon iron. A small percentage in copper increases its strength to 50,000 or 60,000 pounds per square inch without diminishing to any large extent its conductivity. Aluminum increases very considerably the strength of all metals with which it is alloyed.
Rowland's own observations, although, of course, most of them have been given by others: Elements in the Sun, arranged according to Intensity and the Number of Lines in the Solar Spectrum. Not in Solar Spectrum. Antimony, arsenic, bismuth, boron, nitrogen, cæsium, gold, indium, mercury, phosphorus, rubidium, selenium, sulphur, thallium, praseodymium. With respect to these tables, Prof.
He now turned to the use of almost infusible metals such as boron, ruthenium, chromium, etc. as separators or tiny bridges between two carbon points, the current acting so as to bring these separators to a high degree of incandescence, at which point they would emit a brilliant light.
The products at present manufactured are the various grades of aluminum bronze made from a rich furnace product that is obtained by adding copper to the charge of ore, silicon bronze prepared in the same manner, and aluminum silver, an alloy of aluminum with several other metals. A boron bronze may be prepared by the reduction of boracic acid in contact with copper.
And so it happened that the spacemen of the SCN Scorpius turned their valves, threw their controls and disengaged their boron control rods, and the great cruiser flashed into space while the deputy commander and the safety officer were completely tangled with a very flustered and unhappy new Planeteer lieutenant. Sergeant Major Koa and his men had made it before the valve closed.
"What do you think made this tub act up like this, Astro?" asked Tom, ignoring Roger's remark. "Using special reactant feed, Tom," replied Astro. "This is a converted chemical burner with an old-type cooling pump. It's touchy stuff." "Well, couldn't we drive boron rods into the mass and slow down the reaction?" asked Tom.
The boron was next introduced into a small clay crucible, and intensely heated in a current of hydrogen gas, for the purpose of rendering it more dense and destroying its pyrophoric properties, and was lastly introduced into a combustion tubing, heated to bright redness, and a stream of dry carbonic anhydride passed over it, in order to separate the carbon, finally pure boron being obtained.
Phosphides of iron, zinc, etc., were next introduced, and gave, besides carbon and other impurities, a residue containing a large percentage of phosphorus, which differed from ordinary phosphorus with respect to its insolubility in carbon disulphide, and which resembled the reaction in the case with silicon-eisen rather than that of the boron compound, insomuch that a large quantity of the phosphorus had passed into solution.
You have read, too, in The Secret Doctrine, Professor Crooke's theory, endorsed by H.P. Blavatsky, as to how the chemical elements were deposited by a spiral evolutive force, a creative impulse working outward in the form of a caduceus or lemniscate, or figure '8. Now suppose we should discover that just as that force deposited in space, in its spiral down-working, what Crookes calls the seeds of potassium, beryllium, boron, and the rest so such another creative force, at work on the planes of geographical space and time, rouses up or deposits in these, according to a definite pattern, this nation and that in its turn, this great age of culture after that one; and that there is nothing hap-hazard about the configuration of continents and islands, national boundaries, or racial migrations?
Word Of The Day
Others Looking