Geophysicist and seismologist Inge Lehmann was born #OTD in 1888.
In 1936 she discovered the existence of a solid core at the center of the Earth, based on a careful analysis of global seismic records from a 1929 earthquake near New Zealand.
Image: Royal Danish Library
In 1936 she discovered the existence of a solid core at the center of the Earth, based on a careful analysis of global seismic records from a 1929 earthquake near New Zealand.
Image: Royal Danish Library