Crossword clues for rhenium
Douglas Harper's Etymology Dictionary
1925, Modern Latin, from Latin Rhenus "the river Rhine" (see Rhine) + element ending -ium. Coined by German chemists Walter Noddack and Ida Tacke.
Wiktionary
n. A metallic chemical element (''symbol'' Re) with an atomic number of 75.
WordNet
n. a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum [syn: Re, atomic number 75]
Wikipedia
Rhenium is a chemical element with symbol Re and atomic number 75. It is a silvery-white, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. The free element has the third-highest melting point and highest boiling point of any element at 5873 K. Rhenium resembles manganese and technetium chemically and is mainly obtained as a by-product of the extraction and refinement of molybdenum and copper ores. Rhenium shows in its compounds a wide variety of oxidation states ranging from −1 to +7.
Discovered in 1925, rhenium was the last stable element to be discovered. It was named after the river Rhine in Europe.
Nickel-based superalloys of rhenium are used in the combustion chambers, turbine blades, and exhaust nozzles of jet engines. These alloys contain up to 6% rhenium, making jet engine construction the largest single use for the element, with the chemical industry's catalytic uses being next-most important. Because of the low availability relative to demand, rhenium is among the most expensive of metals, with an average price of approximately US$2,750 per kilogram (US$85.53 per troy ounce) ; it is also of critical strategic military importance, for its use in high performance military jet and rocket engines.
Usage examples of "rhenium".
I got my hands on a supply of rhenium that I began to make any progress.
By exciting rhenium molecules with heat and light and a catalyst, I came out slightly on the plus side, gained a bit more energy than was expended in creating it.
I was about ready to give up when I decided to hit a few molecules of rhenium with antimatter, and as a result we almost lost Los Angeles.
That was done within ninety days, for somehow Oscar Kost had been able to buy the necessary rhenium from Canada, Australia, and even from Brazil.
Hamilton began to hope either that the Communist scientists had missed the significance of rhenium or that they had accumulated the metal out of sheer cussedness, simply because, for some reason, the United States wanted it.
There might be considerable rhenium lying around in junkyards and salvage depots as part of discarded electrical equipment.
Gathered up almost two pounds of rhenium from old contact and bearing points and thermocouples.
Harry Shaw had set up a plant out in Utah to purify the rhenium that, since the news media had made a hero of young Clay Girard, was coming in very well from the salvage efforts.
Clay and Jumper flown by Airdart to Desert Haven to see why the rhenium was needed.
She arrived just as a few molecules of rhenium were bombarded with a few particles of antimatter.
The fresh tomatoes, he knew, would be worth their weight in rhenium when they ripened.
He had not told them that there was rhenium fuel for only one more lightstep, the relatively short step to the companion star.
We feel that the energy released is proportional to the number of antimatter particles used in the bombardment, not to the size of the rhenium mass.
The accidental discovery, during the trip out, that the ship could take lightstep with much less rhenium than first theorized, would allow them to make the trip back to Earth with an amount of fuel tons less than originally believed needed, and the trip would be cut to next to no time through the ability to lightstep from planetary orbit.
He only knew that streams of antimatter particles were coming from the Drive housing and causing the stored rhenium to heat up.