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Theoretical analysis of body hair movement in ELF electric field exposure in different environmental conditions

To elucidate the mechanism of the biological effect of ELF (extremely low frequency, 0-300 Hz) electric field and to settle appropriate safety standards, the body hair movement in AC electric field exposure was analyzed. We derived the equation of motion to describe the body hair movement cause by the electric force, and obtained an analytic solution for AC input. We applied this solution to practical conditions and clarified the body hair movement in AC electric field exposure. Using this solution, we analyzed the body hair movement in different humidity and verified the validity of the analysis in experiments.