Monday, May 24, 2010

Four Rare Earth Elements That Will Only Get More Important



Popular Mechanics writer Maggie Koerth-Baker provides a great explanation of the most common rare earth elements and what they're used for. Her story quotes Ames Laboratory senior metallurgist Karl Gschneidner, noted rare earth metal expert. (Go to article)

8 comments:

  1. 你不能決定生命的長度,但你可以控制它的寬度..................................................

    ReplyDelete