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Al-Azmi, Darwish; Mustapha, Amidu O.; Karunakara, N. – Physics Education, 2012
Simple procedures for teaching practical radioactivity are presented in a way that attracts students' attention and does not make them apprehensive about their safety. The radiation source is derived from the natural environment. It is based on the radioactivity of radon, a ubiquitous inert gas, and the adsorptive property of activated charcoal.…
Descriptors: Radiation, Intervals, Energy, Nuclear Physics
Al-Azmi, Darwish; Karunakara, N.; Mustapha, Amidu O. – Physics Education, 2013
Ambient gamma dose rates in air were measured at different locations (indoors and outdoors) to demonstrate the ubiquitous nature of natural background radiation in the environment and to show that levels vary from one location to another, depending on the underlying geology. The effect of a lead shield on a gamma radiation field was also…
Descriptors: Radiation, Science Instruction, Measurement, Geology