Inge Lehmann

Inge Lehmann ForMemRS (13 Mayu 1888 - 21 Fabrairu 1993) ta kasance ƙwararren masanin ilimin ƙasa da ƙasa kuma ɗan ƙasar Denmark. A shekara ta 1936, ta gano cewa Duniya tana da ƙwaƙƙwaran cibiya a cikin narkakkar da ke waje. Kafin haka, masu binciken seismologists sun yi imanin asalin duniya ya zama narkakkar sarari guda ɗaya, da yake ba za su iya ba, duk da haka, su bayyana ma'aunin girgizar ƙasa a hankali daga girgizar ƙasa, waɗanda ba su dace da wannan ra'ayi ba. Lehmann yayi nazari akan ma'aunin igiyoyin girgizar kasa sannan ya kammala cewa dole ne Duniya ta kasance tana da tsayayyen tsakiya da narkakkar cibiya don samar da igiyoyin girgizar kasa wadanda suka yi daidai da ma'auni. Sauran masu binciken seismologists sun gwada sannan kuma sun yarda da bayanin Lehmann. Lehmann kuma ya kasance daya daga cikin masana kimiyyar da suka fi dadewa, wanda ya rayu sama da shekaru 104.