| Show detecting crime by electrical machinery by use of electrical third degree dr A I 1 link of tiie psychology department ew lork deru strutted ted that crime can be detected by machinery persons were used as subjects one of them being supposed to save knowledge know ledga of a crime and the others to know nothing of it the three were subjected to successful sul tests by three electrical devices to determine the guilty party one machine records the time required to answer ques alons A second device the electrical stethoscope magnified the heart beat and the third was an apparatus for measuring electrical resistance of the human skin |