Abstract
ALTHOUGH the observation recorded here may not be new, I have not been able to find a reference to it. A discharge tube was used for testing a vacuum pumping set. It was a straight tube of Pyrex glass 21/2 cm. diameter with plane nickel electrodes; the gas was air with residual gases from the walls of the apparatus; and the Crookes dark space was about 3 cm. long.
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BRADDICK, H. Flashing Afterglow in a Discharge Tube. Nature 126, 725 (1930). https://doi.org/10.1038/126725a0
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DOI: https://doi.org/10.1038/126725a0
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