Inge Lehmann was a Danish seismologist and geophysicist who is known for her discovery in 1936 of the solid inner core that exists within the molten outer core of the Earth. She also discovered the se
Earth's inner core is the innermost geologic layer of the planet Earth. It is primarily a solid ball with a radius of about 1,230 km, which is about 20% of Earth's radius or 70% of the Moon's radius.
Inge Lehmann
…solid material at the Earth's centre. Schematic view of Earth's interior structure. continental crust oceanic crust upper mantle lower mantle outer core inner core — discovered by Lehmann Mohorovičić discontinuity core–mantle boundary outer core–inner core boundary Lehmann was the first to interpret P-wave arrivals…
Heat flow of the inner Earth, according to S.T. Dye and R. Arevalo.