Abstract
IT is stated that amongst the recent discoveries of Prof. Bell in connection with the photophone research is the interesting fact that melted sulphur conducts electrically like selenium, but only at temperatures below that at which it thickens and becomes dark and viscid.
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Physical Notes . Nature 23, 86–87 (1880). https://doi.org/10.1038/023086a0
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DOI: https://doi.org/10.1038/023086a0