Abstract
IN a letter published in NATURE of January 22, I described a monochromator based on the principle of interference of polarized light in a number of quartz plates, and some experiments carried out with such an instrument. From a private communication received from Dr. B. Lyot on January 29, I have learned that much the same principle for the construction of a monochromator was outlined by him in the Comptes rendus of the Paris Academy of Sciences in December 1933. Dr. Lyot did not plan to use Polaroid film in his construction, and has not yet completed an instrument according to his design. I regret the omission of reference to his work, with which I was unfortunately completely unaware when I wrote my letter.
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ÖHMAN, Y. A New Monochromator. Nature 141, 291 (1938). https://doi.org/10.1038/141291a0
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DOI: https://doi.org/10.1038/141291a0
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