Apart from the bare announcement that two bombs, one of them in the "low-megaton-yield range" had been dropped from airplanes and exploded over the Pacific, the newest U.S. nuclear test series supplied little news last week. Neither diplomatic policy nor the need for military secrecy completely explained the comparative silence. There was, in fact, little to be told. Test bombs are not exploded merely to see if they will work or to admire the bang. The instrumental setup is enormously complicated, with seismographs, barographs, radiation detectors, photocells, and many more subtle instruments spread over hundreds of miles of sea, air and...
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