ANALYSIS OF ABSORPTION AND REFLECTION OF ELECTROMAGNETIC WAVES ON ALUMINUM FOIL WITH CELL PHONES

Abstract

This research aims to determine the absorption and reflection characteristics of electromagnetic waves on aluminum foil material using a cellular cell phone as a signal source. The method used is experimental including measuring the intensity of electromagnetic signals absorbed and reflected by aluminum foil at various distances and angles of incidence. The research results show that aluminum foil has an absorption coefficient of 6% and a reflection coefficient of 25%. In principle, the level of reflection is very significant for electromagnetic waves that are absorbed and reflected from aluminum foil toward electromagnetic signals via mobile phones. In other words, the reflection value on aluminum foil is higher than the absorption value. These findings may provide insight into practical applications in the fields of wireless communications and signal interference control. In its use, aluminum foil is more effective at reflecting electromagnetic signals than absorbing them. These findings are in harmony and consistent with the theory of electromagnetic waves and the physical properties of metals