Abstract
IT has been observed that sulphur may be kept, with a little care, in the supercooled liquid state at the ordinary room temperatures (25°–30° C.) in the form of small globules on clean glass surfaces. In some cases it has been possible to keep one and the same globule in the supercooled state for more than three days, even under X-ray exposures. Supercooled liquid sulphur may be prepared also on metal surfaces, for example, brass, aluminium, etc., but in those cases it becomes unstable and solidifies easily, probably due to the crystallizing forces exerted by the metal surfaces. Again, under given physical conditions, the stability is found to be a function of the size or the diameter of the drops. The greater the diameter, the less is the stability. This is probably due to larger surfaces or volumes being more liable to get disturbed. The drops in the supercooled state are found to retain the colour they had at higher temperatures before cooling. Hence it is supposed that the drops maintain exactly the same physical state as they had at the higher temperatures.
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References
Das, Ind. J. Phys., 12, 163 (1938).
Blatchford, Proc. Phys. Soc., 45, 493 (1933).
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DAS, S., DAS GUPTA, K. X-Ray Diffraction by Supercooled Liquid Sulphur. Nature 143, 332 (1939). https://doi.org/10.1038/143332a0
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DOI: https://doi.org/10.1038/143332a0
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