Potassium nitrate (KNO 3), known historically as saltpeter or the mineral niter, is a common salt with multiple uses. It has been known since antiquity; an early appearance in the chemical literature ...

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Researchers from Hanns-Christoph Nägerl's group have produced the world's first ultracold KCs molecules in their absolute ground state. Starting by mixing clouds of potassium and cesium atoms cooled ...