Describes the use of geiger counters for scientific investigations and experiments. Presents information about background radiation, its sources and detection. Describes how geiger counters work and other methods of radiation detection. Provides purchasing information for geiger counters, related computer software and equipment. (MCO)

Reviews diverse types of computer programing languages and provides examples of representative programs from the most significant languages in use. Matches programing languages most suitable for various types of experimental applications for the amateur scientist. (JJK)