Abstract
THE Department of Natural Philosophy in this University has recently acquired, through a fund provided by the liberality of the Bellahouston Trustees of Glasgow, a fine echelon grating of twenty-six plates made by Hilger, London. The instrument has excellent definition, and its great power enables it to show Zeeman effects with moderate magnetic fields. In conjunction with a new electromagnet which has been constructed for the Department by Messrs. Mavor and Coulson from the same fund, we have been able to make some preliminary observations which may be of interest to readers of NATURE. The magnet and spectroscope were shown at the recent British Association meeting, when some account of the power of the set of instruments was given. The magnet when excited by a current of only five or six amperes gave a field of about 50,000 C.G.S., and was found capable of giving still higher intensities.
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GRAY, A., STEWART, W. Effect of a Magnetic Field on Spectra of Helium and Mercury. Nature 65, 54 (1901). https://doi.org/10.1038/065054a0
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DOI: https://doi.org/10.1038/065054a0
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