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Osmium–iridium is used for compass bearings and for balances. [13] Because of their resistance to arc erosion, iridium alloys are used by some manufacturers for the centre electrodes of spark plugs, [88] [91] and iridium-based spark plugs are particularly used in aviation.
The Iridium system was designed to be accessed by small handheld phones, the size of a cell phone. While "the weight of a typical cell phone in the early 1990s was 10.5 ounces" [6] (300 grams) Advertising Age wrote in mid 1999 that "when its phone debuted, weighing 1 pound (453 grams) and costing $3,000, it was viewed as both unwieldly and expensive."
Iridium is mainly used as a hardening agent for platinum alloys. Iridium is the most corrosion-resistant metal known as it is not attacked by acids, including aqua regia. In the presence of oxygen, it reacts with cyanide salts. Traditional oxidants also react, including the halogens and oxygen at higher temperatures.
Iridium Communications Inc. (formerly Iridium Satellite LLC) is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium operates the Iridium satellite constellation , a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. [ 2 ]
Metallic iridium is found with platinum and other platinum group metals in alluvial deposits. [23] Naturally occurring iridium alloys include osmiridium and iridosmine, both of which are mixtures of iridium and osmium. It is recovered commercially as a by-product from nickel mining and processing. [20]
Module maker Iridium is a global satellite communications provider whose command post is in McLean, Va. — mere miles from CIA headquarters, the report noted. ... “The airship, used for ...
Jordan Hassim, Iridium's Executive Director for Communications, told the outlet that the company doesn’t condone the use of its radios or modules "being used in ways they shouldn’t be."
Iridium Communications Inc. (NASDAQ:IRDM) investors will be delighted, with the company turning in some strong numbers...