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Physical sciences/Physics/Energy/Radiation/Ionizing radiation/X ray radiation

When Ken Hess was in ninth grade, he was lucky. His teacher wanted him to do a science project, and he knew exactly what it would be. He talked his dentist into letting him come to the dental office on Saturdays, when it was closed, so Hess could use the X-ray machine to bombard various objects with radiation, observing the results with a “cloud chamber” he had built. The young Hess’s research involved observing the trails made by radioactive particles traveling through the chamber.