Bunsen and Kirchhoff found cesium in German spa water in 1860; rubidium followed a year later
Robert Bunsen and Gustav Kirchhoff discovered cesium in 1860 and rubidium in 1861, the first elements ever found with a spectroscope.
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Robert Bunsen and Gustav Kirchhoff discovered cesium in 1860 and rubidium in 1861, the first elements ever found with a spectroscope.
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