Letter | Published:

X-Ray Micro-radiography of Biological Specimens

Naturevolume 168pages513514 (1951) | Download Citation



A HGHLY loaded micro-focus X-ray tube1,2 was used for taking X-ray photographs of microscopic specimens. Engström and others3–5 have established a strong case for this kind of micro-radiography and have obtained remarkable photographs of microscopic sections in a wave-length range of 5–10 A. using a special tube with a focus of moderate size.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Ehrenberg and Spear, Proc. Phys. Soc., B, 64, 67 (1951).

  2. 2

    Spear, Proc. Phys. Soc., B, 64, 233 (1951).

  3. 3

    Engström, “Progress in Biophysics”(Butterworth, London, 1950).

  4. 4

    Lamarque, C.R. Acad. Sci., Paris, 202, 684 (1936).

  5. 5

    Dauvillier, C.R. Acad. Sci., Paris, 190, 1287 (1930).

  6. 6

    Kirkpatrick and Baez, J. Opt. Soc. Amer., 38, 766 (1948).

  7. 7

    Kirkpatrick, Nature, 166, 251 (1950).

  8. 8

    Ehrenberg, J. Opt. Soc. Amer., 39, 740 (1949).

Download references

Author information


  1. Birkbeck College Research Laboratory, University of London, London, W.C.1

    •  & W. E. SPEAR


  1. Search for W. EHRENBERG in:

  2. Search for W. E. SPEAR in:

About this article

Publication history

Issue Date



Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.