Industrial and Chemical Research with X-Rays of High Intensity and with Soft X-Rays

The Demodulation of a Frequency-Modulated Carrier and Random Noise by a Discriminator

“…In fact, the d.c. outputs of the two rectifiers separately are hoo (1) and hoo (2) , To obtain the correlation function ' .IF cCr) of the continuous part of the output spectrum, we omit the terms for k=O; outside of the term giving the d.c. output, these terms are of no interest on account of their high frequencies. By the Wiener-Khintchine theorem; the continuous (noise) output spectrum is Thus, for example,…”

X -ray studies of the molecular structure of myosin

“…Previous X-ray studies of muscle (Herzog andJancke 1921, 1926;Boehm and Schotzky 1930;Clark and Corrigan 1931;Boehm 1931Boehm , 1933Worschitz 1934;Meyer and Picken 1937) do not appear to have brought out or made any use at all of this resemblance, the starting-point of the present investigations, though the closeness between the X-ray diffraction pattern of normal hair and that of relaxed muscle, washed and dried, is such as to imply immediately that the two structures depend for their properties on proteins of like molecular configuration.…”

“…X-ray studies of the molecular structure and properties of animal hairs (Astbury and Street 1931;Astbury and Woods 1933;Astbury and Sisson 1935 ' Woods 1938)* lead naturally to comparable studies of muscle tissue, if only because both types of structure are protein and fibrous, but par ticularly because both show similar long-range elastic phenomena and give similar X-ray photographs (Astbury 1933a(Astbury , 1934. Previous X-ray studies of muscle (Herzog andJancke 1921, 1926;Boehm and Schotzky 1930;Clark and Corrigan 1931;Boehm 1931Boehm , 1933Worschitz 1934;Meyer and Picken 1937) do not appear to have brought out or made any use at all of this resemblance, the starting-point of the present investigations, though the closeness between the X-ray diffraction pattern of normal hair and that of relaxed muscle, washed and dried, is such as to imply immediately that the two structures depend for their properties on proteins of like molecular configuration.…”