Ụkpụrụ ngwaahịa
Igwe eriri igwe Igwe mmiri na-emepụtagharị oghere ndọta n'ụdị nke ugbu a na-agafe ikuku, dabere na iwu Bio-Safar. The size nke magnetik ike ike na-adaba adaba ịgbanwe, nwere ike ịgbanwe site n'ịgbanwe size nke ike ọkọnọ ugbu a, n'ihi na site ugbu a magnetik ubi eriri igwe dị mfe ikpo àgwà, imewe na-eji ala resistivity eduzi, ojiji nke pụrụ iche. ihe ndị na-eduzi okpomọkụ ahaziri ikposa okpomọkụ, usoro ezi uche dị na ya na nke dị irè, usoro jụrụ oyi site n'iji obi jụrụ oyi, mmiri jụrụ oyi, mmanu mmanu.