A na-eme ihe njide mma site na imepụta ihe osisi siri ike, siri ike, na-adịgide adịgide na nchekwa gburugburu ebe obibi, mepụta kichin akwụkwọ ndụ akwụkwọ ndụ na ahụike maka ụlọ gị. Ihe ndọta akụkụ abụọ nke njide mma. Obosara efere magnetik, ultra nnukwu ikike nwere ike idowe ọtụtụ ihe.