Letters to the Editor
The intricacies of automatic computing methods have been popularized by pictures, visual and verbal, of complicated wiring diagrams, great banks of electron tubes, and dramatic control boards, as well as by certain romantic analogies between the machines and the human brain. There remains, however, a need for defining the limits of computing machine operation, as well as its promise.
Not knowing what made good cathodes good never prevented their extensive use nor has it halted the development of vacuum tubes. Now explanations are catching up with effects and the art of fabrication may become a science.
With radioisotope shipments from Oak Ridge alone now running well over three hundred per month, an increase of approximately 500 percent in two years, the need for a comprehensive set of regulations which might be adopted by all carriers was imperative. The National Research Council has worked on the problem of setting up safe standards. The material for this article is taken from a report prepared by Robley D. Evans, the full text of which will be available at a later date from the National Research Council.