Name: Cruel . Gender: Male or Female . Usage: Cruel is not a popular first name. It is more often used as a boy (male) or a girl (female) name. People having the name Cruel are in general originating from United States of America.
An earlier and less successful lie detector or polygraph machine was invented by James Mackenzie in 1902. However, the modern polygraph machine was invented by John Larson in 1921. John Larson, a University of California medical student, invented the modern lie detector (polygraph) in 1921. Used in police interrogation and investigation since 1924, the lie detector is still controversial among psychologists, and is not always judicially acceptable.
Edward J. Hoffman, 62; Professor, Co-Inventor of PET Scan Device August 04, 2004 | From Times Staff and Wire Reports Edward J. Hoffman, 62, UCLA professor of nuclear medicine who with Michael E. Phelps invented the positron emission tomography (PET) scanner, which helps detect cancer, heart disease and other serious illnesses, died July 1 at UCLA Medical Center of liver cancer.