Inge Lehmann, Date of Birth, Place of Birth, Date of Death

Inge Lehmann

Danish seismologist who discovered the Earth's inner core

Date of Birth: 13-May-1888

Place of Birth: Copenhagen, Capital Region of Denmark, Denmark

Date of Death: 21-Feb-1993

Profession: geologist, geodesist, seismologist

Nationality: Denmark

Zodiac Sign: Taurus

Inge Lehmann (13 May 1888 – 21 February 1993) was a Danish seismologist and geophysicist.
In 1936, she discovered that the Earth has a solid inner core inside a molten outer core.
Before that, seismologists believed Earth's core to be a single molten sphere, being unable, however, to explain careful measurements of seismic waves from earthquakes, which were inconsistent with this idea.
Lehmann analysed the seismic wave measurements and concluded that Earth must have a solid inner core and a molten outer core to produce seismic waves that matched the measurements.
Other seismologists tested and then accepted Lehmann's explanation.
Lehmann was also one of the longest-lived woman scientists, having lived for over 104 years.