Inge Lehmann

Danish seismologist who discovered the earth's inner core (1888-1993).

Born May 13th, 1888 in Copenhagen, Østerbro. [ref]

Died February 21st, 1993 at 104 years old in Copenhagen. [ref]

Occupations
geologist, geophysicist, naturalist, seismologist, surveyor
Wikipedia

When I shall die, let it be doing that I had designed. Ovid