Small clouds of strontium atoms (blue) and rubidium atoms (red) are trapped together. The well-known properties of rubidium can be used to calibrate the applied magnetic field very precisely, which in ...
THE age of four samples of granitic rocks selected by the Establishment for Nuclear Materials (Beograd, Yugoslavia) has been measured by the rubidium/strontium method. All analyses were made on ...
THE Precambrian crystalline basement of northwest Scotland, the Lewisian, has been described by various authors 1,2. Sutton and Watson 3 defined two distinct metamorphic episodes in the Lewisian, the ...
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