Abstract
THE writer has examined the four-line spectrum of hydrogen as produced in Geissler tubes with a 1 mm. capillary by alternating current of 15 milliamperes without inductance or capacity. The light was analysed by a glass prism monochromator, and the intensities measured by a photo-electric cell of quartz containing rubidium in an atmosphere of helium. The cell was calibrated in absolute units by a carbon filament lamp the energy distribution of which in different wavelengths is that of a grey body in the visible spectrum.
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BEATTY, R. The Spectrum of Hydrogen. Nature 98, 169 (1916). https://doi.org/10.1038/098169a0
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DOI: https://doi.org/10.1038/098169a0
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