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Photos from: PGEs – the hard-working precious metals



Metal Tech News - Discovering the elements of innovation platinumMetal Tech News - Discovering the elements of innovation palladiumMetal Tech News - Discovering the elements of innovation rhodiumMetal Tech News - Discovering the elements of innovation rutheniumMetal Tech News - Discovering the elements of innovation iridiumMetal Tech News - Discovering the elements of innovation osmiumMetal Tech News - Discovering the elements of innovationMetal Tech News - Discovering the elements of innovation

U.S. National Institute of Standards and Technology

From 1889 to 1960, the meter was defined as the length the International Prototype Meter bars, which were cast from a special alloy of 90 percent platinum and 10 percent iridium.



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