 inge lehmann formemrs (may 13, 1888 &ndash; february 21, 1993), was a danish seismologist who discovered the earth's inner core. in 1936 she argued, correctly, that the earth's core is not a single molten sphere, but that an inner core exists, which has physical properties that are different from those in the outer core. ==early life and education== inge lehmann was born and grew up in Ãsterbro, a part of copenhagen. she was the daughter of the experimental psychologist alfred georg ludvik lehmann (1858â1921). she received her school education at a pedagogically progressive high school led by hanna adler, an aunt of niels bohr.  according to lehmann, her father and adler were the two most significant influences for her intellectual development. after having finished school, she studied, with some interruptions due to poor health, mathematics at the university of copenhagen and university of cambridge. she continued her studies of mathematics in cambridge from 1910-1911 at newhan college. in 1911 lehmann returned from cambridge feeling exhausted from the work, so s
1888_births 1993_deaths Danish_centenarians Danish_geologists Danish_scientists Foreign_Members_of_the_Royal_Society Seismologists Women_earth_scientists