Abstract
At the time of the publication of the accounts by Born, Fürth and Pringle1,2 of the new instrument named by them the ‘photo-electric Fourier transformer’, we happened to be engaged in constructing a very similar instrument here. The principle of the apparatus and the main essentials of its design had been worked out by one of us (D. B.) in continuation of earlier work on acoustic spectra from sound-films; it seemed probable that the method would have advantages over the diffraction method previously employed3.
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References
Born, M., Fürth, R., and Pringle, R. W., Nature, 156, 756 (1945).
Fürth, B., and Pringle, R. W., Phil. Mag., 37, 1 (1946).
Brown, D., Proc. Phys. Soc. Lond., 51, 244 (1939).
Gabor, D., J. Inst. Elect. Eng., 93, 429 (1946).
J. Acoust. Soc. Amer., 18, 1 (1946).
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BROWN, D., LYTTLETON, J. Photo-electric Fourier Transformer and its Application to Sound-Films. Nature 160, 709 (1947). https://doi.org/10.1038/160709a0
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DOI: https://doi.org/10.1038/160709a0
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