Inge Lehmann

Danish seismologist who discovered the earth's inner core.

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

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

Occupations
geologist, geophysicist, land surveyor, naturalist, seismologist
Wikipedia

Our dead are never dead to us, until we have forgotten them. George Eliot