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Iridium |
Also found in: Dictionary/thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia, Hutchinson | 0.03 sec. |
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Iridium A precious metal that is extremely resistant to corrosion. It is used mainly for scientific and industrial purposes for which resistance to corrosion at high temperatures is needed. With only three metric tons of iridium produced and used each year, it is traded as a commodity on various security exchanges. Like many precious metals, iridium is volatile, but generally maintains relatively high prices. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Dyer says the study is the first to demonstrate that microorganisms can both enhance and erase the iridium concentration in rock. The Blue Sky Network and Iridium equipment ensures that pilots have the global tracking and two-way communications they need to be in constant contact with ground control. When researchers discovered a high iridium level in sediments that had been deposited during the Cretaceous-Tertiary (K/T) mass extinctions, it stood out like a sore thumb. |
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