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Discoverers of Discontinuities: Isaac Newton, Andrija Mohorovicic, Beno Gutenberg, Inge Lehmann

Learn about the pioneering scientists who made significant discoveries about the Earth's structure and the discontinuities within it. Explore the contributions of Isaac Newton, Andrija Mohorovicic, Beno Gutenberg, and Inge Lehmann.

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Discoverers of Discontinuities: Isaac Newton, Andrija Mohorovicic, Beno Gutenberg, Inge Lehmann

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  1. UNIT6 The Earth’s structure DISCOVERERS OF DISCONTINUITIES Natural Science 2. Secondary Education

  2. UNIT6 Discoverers of discontinuities Isaac Newton • Newton was born in 1642. He was an English physicist, theologian, inventor and alchemist. • He was one of the first scientists to theorise that the composition of the inside of the Earth was different from that of the surface. • While developing his famous theory of gravity, Newton deduced that the density of the interior of the Earth was approximately twice that of the rocks found on the surface. Isaac Newton Natural Science 2. Secondary Education

  3. UNIT6 Discoverers of discontinuities Andrija Mohorovicic • Mohorovicic was born in Croatia in 1857. He was a meteorologist and seismologist. • He carried out important studies on climate, but he is best known for his discovery of the discontinuity that separates the Earth’s crust from its mantle. He was the first scientist to discover a discontinuity between the layers of the Earth’s interior. • It was not until many years after Mohorovicic’s discovery that his ideas were understood and accepted. Andrija Mohorovicic Natural Science 2. Secondary Education

  4. UNIT6 Discoverers of discontinuities Beno Gutenberg • Gutenberg was a German seismologist, who was born in 1889. • He obtained his doctorate when he was only 22. He was 25 when he made his historic discovery of the discontinuity between the Earth’s mantle and its core. • He is also known for developing the famous Richter scale, which measures the intensity of earthquakes, in partnership with Charles Richter. Beno Gutenberg Natural Science 2. Secondary Education

  5. UNIT6 Discoverers of discontinuities Inge Lehmann • Lehmann was born in Denmark in 1888. She was a seismologist and mathematician. • In 1928, she was appointed head of the department of seismology at the Royal Geodetic Institute of Denmark, where she worked for 25 years. • Lehmann published her discovery of the discontinuity between the Earth’s molten outer core and solid inner core. • She died at the age of 104 in 1993. Her contributions to geology were so great that the Inge Lehmann Medal was created in 1995 to recognise contributions to our understanding of the Earth’s structure. Inge Lehmann Natural Science 2. Secondary Education

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