Abstract
A COMPARISON of the values given by Professor Ångström (in his magnificent Recherches sur le spectre solaire) for the wave-lengths corresponding to the two principal components of Fraunhofer's line D, with some observations made eight or nine years ago by M. Fizeau, not only reveals a remarkable agreement between the results of these two distinguished investigators, but yields one of the most striking confirmations of the truth of the undulatory theory of light that recent optical research has afforded.
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FOSTER, G. M. Fizeau's Experiments on “Newton's Rings”. Nature 2, 105 (1870). https://doi.org/10.1038/002105a0
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DOI: https://doi.org/10.1038/002105a0