A simple method allowing precise measurement of spectral line splittings with a scanning, student‐grade, Fabry–Perot interferometer is described. The isotope split between hydrogen and deuterium emission lines is taken as a characteristic experiment. Typical data are presented and analyzed. The experiment is suitable for a junior–senior‐level laboratory.
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© 1982 American Association of Physics Teachers.
1982
American Association of Physics Teachers
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