How to use Iridium in a sentence
Iridium tetrachloride, IrC1 41 is obtained by dissolving the finely divided metal in aqua regia; by dissolving the hydroxide in hydrochloric acid; and by digesting the hydrated sesquichloride with nitric acid.
Aqua Regia, a mixture of nitric and hydrochloric acids, converts all metals (even gold, the "king of metals," whence the name) into chlorides, except only rhodium, iridium and ruthenium, which, when pure, are not attacked.
It may be obtained in the spongy form by igniting iridium ammonium chloride, and this variety of the metal readily oxidizes when heated in air.
Iridium sesquichloride, IrC1 31 is obtained when one of the corresponding double chlorides is heated with concentrated sulphuric acid, the mixture being then thrown into water.
Iridium sulphide, IrS, is obtained when the metal is ignited in sulphur vapour.Advertisement
That said, key clients like the United States Department of Defence held steady and the USA-based Iridium was able to survive.
It was in the late 1990s that Motorola spun off the creation of Iridium, a company dedicated to satellite communications.
In addition to Motorola, Kyocera was also involved in the development of Iridium satellite phones.
Unfortunately for both companies, Iridium faced many significant growing pains in its early stages, struggling to turn a profit and elicit a large enough customer base.
Two main models of Motorola satellite phones are available for purchase, though they are likely branded as Iridium devices at most major retailers.Advertisement
Motorola does not provide worldwide service, but Iridium is able to provide satellite phone service around the globe.
The Motorola Satellite 9500, which was also sold as the Iridium 9500 Satellite Phone, is a rugged model that provides both voice and data services.
It was also marketed as the Iridium Satellite Series 9505 Portable Phone, and it is both rugged and weather-resistant.
Tacori platinum rings use an alloy of 95% platinum and only 5% iridium for exceptional strength and brilliance.
The disulphide, IrS2, is formed when powdered iridium is heated with sulphur and an alkaline carbonate.Advertisement
In the following year he discovered rhodium; and at about the same time Smithson Tennant added two more to the list - iridium and osmium; the former was so named from the changing tints of its oxides (ipcs, rainbow), and the latter from the odour of its oxide (ovµA, smell).
Gold, platinum, iridium and rhodium only are proof against the action of this powerful oxidizer.
Glass stills heated by a sand bath are sometimes employed in the final distillation of sulphuric acid; platinum, and an alloy of platinum and iridium with a lining of gold rolled on (a discovery due to Heraeus), are used for the same purpose.
In this process all the anode metals pass into solution except iridium and other refractory metals of that group, which remain as metals, and silver, which is converted into insoluble chloride; lead and bismuth form chloride and oxychloride respectively, and these dissolve until the bath is saturated with them, and then precipitate with the silver in the tank.
The residue so obtained is then powdered and ignited with barium nitrate, which converts the iridium into its oxide and the osmium into barium osmiate.Advertisement
With reference to the materials of which standards of length are made, it appears that the Matthey alloy iridio-platinum (90% platinum, 10% iridium) is probably of all substances the least affected by time or circumstance, and of this costly alloy, therefore, a new copy of the imperial yard has been made.
He was a man of more promise than performance, and his chief achievement was the discovery of the elements iridium and osmium, which he found in the residues from the solution of platinum ores (1804).
Nitric acid is without action on gold, platinum, iridium and rhodium.
Stratos is a leading global telecommunications service provider specializing in mobile and fixed remote communications including iridium worldwide.
Aircraft - which can use iridium providing they don't exceed about Mach 2 at which point the orbiting satellites, can get confused!Advertisement
He showed that large amounts of the element iridium present in geological layers dating from about 65 million BC had a cosmic origin.
He is looking for a buyer for his self-build ocean-going yacht and his Iridium satellite phone.
The iridium is then precipitated from the solution (as oxide) by the addition of baryta, dissolved in aqua regia, and precipitated as iridium ammonium chloride by the addition of ammonium chloride.
Two oxides of iridium are known, namely the sesquioxide, Ir203, and the dioxide, Ir02, corresponding to which there are two series of salts, the sesqui-salts and the iridic salts; a third series of salts is also known (the iridious salts) derived from an oxide IrO.
The hydroxide, Ir(OH) 3, may be obtained by the addition of caustic potash to iridium sodium chloride, the mixture being then heated with alcohol.Advertisement
Iridium is always determined quantitatively by conversion into the metallic state.
Priced at just $60.00, you can purchase this style in dark amber/bronze or black/blue iridium.
The Asian Fit option includes a Jet Black frame with Black Persimmon Iridium Transitions lens or a Grey frame with G40 Transitions lens.
The women's Half Jacket comes in a Pearl frame with Black Iridium lens.
Both styles are done with Black frames and Black Iridium lenses.Advertisement
For those who like to color outside the lines, this Neon Yellow sunglass with its Fire Iridium lens may be the perfect fit!
The brown arms of this sunglass are the perfect foil for the Fire Iridium lens.
For $242.00, this iridium lens and jet black finish is a fashionable take on sports technology.
The frame is finished in a metallic red, while the lens offers up shiny black iridium.
Back Country also offers the Gascan look in a dark grey frame and black iridium polarized lenses.Advertisement
The lens choices for Mars included Black Iridium, Ruby Iridium and Gold Iridium.
There are eight color combinations available with this one, including Polished Amber/Dark Bronze, Polished White/Violet Iridium, and Matte Black/Grey.
You can get the polarized versions in Black Iridium, Ice Iridium, or Fire Iridium.
Other color options include Emerald Iridium, Fire Iridium, Gold Iridium, Ice Iridium, Ruby Iridium, and Black Iridium.
Choose from Black Iridium, Dark Grey, Grey, Amber Black Iridium Polarized, and Bronze Polarized lenses.Advertisement
The Iridium coating further helps to maximize the optics of the lenses.
They cost $120.00 and you can get them in carbon/tungsten iridium, light/ice iridium, and polished black/black iridium.
At REI, you'll find them again for $120.00, in carbon/tungsten iridium and light/ice iridium.
You can get polished black/black iridium, carbon/bronze polarized, light/ice iridium, dark/ice iridium polarized, and carbon/tungsten iridium.
Half Jacket accessory lenses come in an ice iridium polarized shade that has a tinge of purple in the coloring.Advertisement
So for all of you that are looking for Half Jackets in a silver/blue iridium lens or in a gunmetal/gold lens, you may want to turn to this site first.
The unisex vintage styles came in a handful of colors including Crystal Black and Emerald, with iridium lenses.
Other companies, like Inmarsat and Iridium, issue numbers with special country calling codes.
Choose from a series of Iridium satellite phones and add extra features like more airtime minutes, loss and theft protection, and more.
Regular voice calls to landlines and cellular phones are $1.99 per minute, which is the same rate for calling other Iridium satellite phones or checking your voicemail inbox.
The services include both mobile voice and data with Iridium global satellite phones.
Iridium sesquioxide, Ir 2 0 3, is obtained when potassium iridium chloride is heated with sodium or potassium carbonates, in a stream of carbon dioxide.