The Atomic Fingerprint

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You are a physicist investigating the properties of semiconductors. The electrical properties of one specimen are not quite like the others that you've studied. What makes this specimen different?You are a physician treating a patient who, because of a severe calcium deficiency, has been suffering from osteoporosis. Are you on the right track with your treatment?You are an analytical chemist working for a plastics manufacturer. You have been asked by the plant superintendent to determine why some of the plastic coming from the plant has been discolored.You are a curator working with the ancient coin collection in a large museum. A donor has just given the museum a group of 50 gold coins presumably about 1500 years old. Are they genuine?You are a scientist working in the criminology laboratory of a large metropolitan city. A detective brings you a minute sample of paint taken from the clothing of a hit-and-run victim. He has a suspect whose automobile paint seems to match that sample. Can you determine his guilt or innocence?Neutron activation analysis can be used to solve each of these problems and many more.