Hoffmann and Schulze 1 have recently determined the melting point of high-purity silicon (99.89 per cent) and of commercial silicon (98 per cent), and give the values 1,411° ± 2° C. and 1,409° ± 2° C.
IN recent issues of NATURE, Messrs. Wolfke and Mazur have recorded discontinuities in the temperature coefficients of the density and of the di-electric constant of nitrobenzene ; and they specify the ...
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