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Lehmann overturned the melodic theme that our planet's metallic core is entirely thawing liquid state state . She used maths to analyze the way energy released by earthquakes travels through the Earth. She discovered something eternally concealed from the naked eye thousands of miles below our feet, at its center, the Earth is solid . In fact,, it has a solid inner core and a liquid outer core. Lehmann is also remarkable in that she is one of the longest-lived scientists in history, living to 104 years of age. Her father, Alfred Georg Ludvik Lehmann, was a psychologist and her mother, Ida Sophie Torsleff, was a woman of the house . Both parents came from prominent families. Inge was a very shy girl who did not enjoy being in the spot . She continued to be shy throughout her long biography . She was shoal time metered at a buck private coeducational schooling called Faellesskolen which translates as shared school. The school was new: it had been founded when Inge was 5 years old by Hanna Adler, a wealthy woman.. Hanna Adler's new school was unusual in that male child and girls were treated identically, poring over the same topic and taking parting in the same sportsman and activities. The children were not disciplined as rigorously as in other schools of that meter . Inge Lehmann enjoyed her time at the Fællesskolen, but she was sometimes bored because she did not feel challenged enough by the schoolwork. In 1906, at age 18, she passed the entrance examination for Copenhagen University with a first rank mark. University Lehmann started freshman track in mathematics, chemistry and physics at the University of Copenhagen in 1907. She finally graduated in 1920. She then discovered the Earth’s Speciality with publishing.