Abstract
Young men of 1915 replaced old-fashioned film with "modern" ionization chambers. But unenlightened analysts soon retrogressed to film so young men of the 1940's again demon-strated the superiority of electronic detectors. By the 1960's a whole generation had grown up with electronics and should have forgotten film, but surreptitiously it crept back into use for quantitative diagnostics of important pulsed x-ray sources. Even today there are those who claim the right to use it because of its greater range of acceptable photon energy and intensity and the simplicity of using it.© (1977) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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