Luminous vapour from the mercury arc and the progressive changes in its spectrum | Zendy

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Luminous vapour from the mercury arc and the progressive changes in its spectrum

Author(s) -

Lord Rayleigh

Publication year - 1925

Publication title -

proceedings of the royal society of london series a containing papers of a mathematical and physical character

Language(s) - English

Resource type - Journals

eISSN - 2053-9150

pISSN - 0950-1207

DOI - 10.1098/rspa.1925.0073

Subject(s) - mercury (programming language) , glow discharge , arc (geometry) , stark effect , atomic physics , electric arc , line (geometry) , spectral line , chemistry , physics , plasma , electrode , astronomy , geometry , mathematics , quantum mechanics , computer science , programming language

It was observed originally by Stark that a stream of mercury vapour allowed to distil away from the arc or glow dischargein vacuo remains luminous. It may be said to carry the luminosity away with it, and in the case of the arc discharge there is no difficulty in detecting the luminosity for 50 cm. or so from the source. Stark found that when a glow discharge was used, which developed the continuous band spectrum, this spectrum could be detected in the distilled vapour, along with the line spectrum. When the glow was passed through an electric field, the line spectrum was found to be quenched, leaving the band spectrum unaffected. The arc discharge, on the other hand, gave only the line spectrum in his experiments.

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