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11 ώρες πριν · Properties Form and structure Gallium crystals Most metals are shiny and lustrous, at least when polished, or fractured. Sheets of metal thicker than a few micrometres appear opaque, but gold leaf transmits green light. This is due to the freely moving electrons which reflect light. Although most elemental metals have higher densities than nonmetals, there is a wide variation in their ...
11 ώρες πριν · The domestic auto industry accounts directly and indirectly for one of every ten jobs in the U.S. Michigan was second in the U.S. in 2004 for new corporate facilities and expansions. From 1997 to 2004, Michigan was the only state to top the 10,000 mark for the number of major new developments; [35] [114] however, the effects of the late 2000s ...
