Abstract:
Mobile phones emit radiofrequency signals, raising concerns about potential health effects on the human brain due to prolonged exposure. This project related to Comprehensive study of the Electromagnetic radiation emitted by mobile telephones and their effect on the human head when mobile phones are held closer (5Cm) from the user's head and away from the user’s head (10 Cm). In this work the primary objective was to conduct a survey for determining the most used mobile phones’ brand Nyarugenge district located in Kigali city. Second was measurement of electric field (EF) strength emitted from different types of mobile phones that are mostly used in Nyarugenge district. Third assessment of mobile phone radiation level across different overcrowded areas in Kigali city is conducted such as Nyabugogo parks, Nyarugenge Markets, Kimirongo Markets. 3 Axis Radio Frequency Electromagnetic Field Meter, Model: Emf-839, Iso-9001, Ce, Iec1010 has been used in the measurement of electric field strength of mobile and at the chosen areas. To know the effect of such electromagnetic waves emitted by mobile telephones, the specific absorption rate (SAR) of the human head caused by those radiations had been mathematically calculated. According to the survey done the feature phones are most used than the smartphone. the measurement of electric field emitted by the different phones, the results show that feature phones emit higher than smartphone this means that SAR of the feature phone is greater as compared to the smart phones. The measurement of the electric field has been taken in the three different location, the results shows Nyabugogo parks has high electric field strength as compared to other places, and cause high absorption rate on human head compared to the place chosen in the Kigali city. The comparison of obtained values of specific absorption rate with the standard value approved by international radiation exposure ICNIRP indicate that they are within the standards limits. That means there is no negative effect on human health from the exposure to these radiations because the SAR measured from mobile phones and at different locations in Kigali city are less than the limit SAR of 2kg/W
