Explore "The Gregory Circle" by Murray Leinster on Textopian. Read with annotations and highlights.
It was genuine curiosity. But an ordinary man, looking at a Geiger counter, does not understand that a tiny particle at high velocity -- so small that it passes through a glass tube and a metal lining without hindrance -- makes a Geiger tube temporarily conductive. Murfree stared blankly at Bud Gregory.
"How the heck -- " Then he said curiously, "It was invented to detect radiations that come from nobody knows where. And it's used in the plants that make atom bombs, to tell when there's too much radioactivity -- too much for safety."