Ice Nucleation: Elemental Identification of Particles in Snow Crystals

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Science  08 Jun 1973:
Vol. 180, Issue 4090, pp. 1057-1058
DOI: 10.1126/science.180.4090.1057


A scanning field-emission electron microscope combined with an x-ray analyzer is used to locate the ice nucleus within a three-dimensional image of a snow crystal and determine the chemical composition of the nucleus. This makes it possible to better understand the effect of nuclei in cloud seeding.