Rock dated by rubidium decay() | |||
Sample Image | |||
Rock dated by rubidium decay. (External Sample) This very, very old rock was dated by measuring the decay of rubidium in it. Sort of like carbon-dating for really old things. Location: The Boston Museum of Science Photographed: 2 October, 2002 Size: 36 Purity: <0.01% | |||
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