Science: A Geiger Counter for Everybody

One thing a radioactive world needs is a good "atom-sized" Geiger counter. Last week the University of Chicago proudly displayed a handy, hip-pocket model. The new gadget is so easy to read that anybody can tell when his surroundings become dangerously radioactive.

The pocket model was developed by Dr. O. G. Landsverk and two aids as a wartime device (e.g., to protect troops in such hazardous spots as blasted Hiroshima). The military now thinks it is all right for civilians to know about it. The instrument's chief working parts are a small chamber, a bronze wire (charged by a battery) and a...

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