Letter | Published:

Photographic Fourier Synthesis

Nature volume 155, pages 1819 (06 January 1945) | Download Citation

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Abstract

IN 1929, Sir Lawrence Bragg1 showed that electron density projections and Patterson projections of crystal structures could be synthesized by the photographic addition of patterns of light and dark bands of proper period and orientation, one pattern for each term in the series. Later2, I showed that such syntheses can be made easily and rapidly if one has available a set of suitable masks. These are inserted successively into a photographic enlarger and exposures made through them, the exposure times being proportional to the F or F2 values—the coefficients of the individual terms in the series.

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References

  1. 1.

    , Z. Krist, A. 70, 475 (1929); "The Crystalline State" (New York, Macmillan 1934), p. 229.

  2. 2.

    , J. Amer. Chem. Soc., 63, 66 (1941).

  3. 3.

    , and , J. Chem. Soc., 1324 (1939).

  4. 4.

    , J. Chem. Soc., 1195 (1936).

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Author information

Affiliations

  1. Kodak Research Laboratories, Rochester, N.Y. Oct. 9.

    • MAURICE L. HUGGINS

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DOI

https://doi.org/10.1038/155018b0

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