Abstract
DURING some work in this laboratory with the copper arc, certain pole effects were observed. The arc was formed by two rods of pure copper, 4 mm. in diameter. The length of the arc was 6 mm. and the current strength 3 amp. on a 220-volt circuit. An image of the arc was projected on to the slit of a Hilger quartz spectrograph (size E.1), the arc being in line with the slit.
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SIMEON, F., DREBLOW, E. Spectrum Observations on the Copper Arc. Nature 114, 751 (1924). https://doi.org/10.1038/114751b0
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DOI: https://doi.org/10.1038/114751b0
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