Inge Lehmann
This Danish scientist worked out that Earth’s inner core is solid and not liquid.
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Beneath the surface Inge Lehmann’s career in SEISMOLOGY – the study of earthquakes and the seismic waves they produce – began in 1925 when she became responsible for analyzing data from seismic observatories. Seismic waves travel at varying speeds through different is layers of Earth, revealing clues about The liquid outer core el. ck ni d Earth’s inner mysteries. mainly molten iron an
Who came before… English seismologist John Milne designed one of the first seismographs in 1880. He analyzed earthquake data from his Isle of Wight observatory.
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ball The inner core is a el. ck ni of solid iron and In 1897, British geologist RichaRd dixon oldhaM identified three different types of seismic waves. Studying the speed of these waves, he concluded that Earth must have a central core.
