Atomic batteries powered by radioisotopes were one of the first dreams of the Atomic Age, but the dream has taken a long time to turn into reality. Most atomic batteries have produced too little elec tricity, or have stopped working after too short a time. This week the Walter Kidde Nuclear Laboratories, Inc. of Garden City, N.Y. told about a new and apparently practical kind of atomic battery developed for Elgin National Watch Co.
The battery's power comes from promethium 147 (one of the more plentiful byproducts of nuclear fission), which emits low-energy beta...
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