Inge Lehmann
Inge Lehmann
Inge Lehmann 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 scientists, having lived for over 104 years.
From *.wikipedia.org,
General Info
.
Female
Date of Birth
May 13rd, 1888
Age
136
Date of Death
February 21st, 1993
Died Aged
104
Star Sign
Taurus
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