The soil water content (θ) is a crucial soil parameter that is studied in numerous research related to engineering, geology, soil science, and environmental science. For instance, θ affects how well soil aeration, groundwater recharge, soil strength, and hydraulic conductivity are evaluated. For the purpose of monitoring and controlling several soil processes, measurement of θ is necessary. Gamma Ray Attenuation (GRA) is a fast and non-destructive technique for measuring μ in soils with significantly varied compositions. However, GRA is rarely covered in lab physics courses. A planned experiment involves measuring θ with a teaching GRA device. The experimental setup consisted of a radioactive source with a 37Cs decay, a radiation counter, and a Geiger-Müller detector. Examined were four distinct granulometric compositions of soil samples. Strong linear connections were observed between the transmitted gamma-ray photon intensity and θ (correlation coefficients ranging from −0.95 to −0.98). The differences in soil porosity between the GRA and traditional methods ranged from around 7.8% to 18.2%. Additionally, a strong linear association (correlation coefficients between 0.90 and 0.98) was seen when measuring θ using the GRA in conjunction with the traditional gravimetric method. It was confirmed that the teaching GRA equipment was successful in measuring θ. Additionally, the tool introduces a few key aspects of the study of modern physics to undergraduate students from a range of topic areas..

attenuation coefficient, soil granulometry, soil porosity, 137Cs gamma-ray photons, and soil aggregates