FORVM`s Classical Numismatics Discussion Board
Numismatic and History Discussion Forums => History and Archeology => Topic started by: Metrodorus on February 14, 2017, 03:09:05 am
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So, found this in the New Yorker only a few minutes ago:
EARTH’S MYSTERIOUS MAGNETIC FIELD, STORED IN A JAR
By Marcia Bjornerud:
http://www.newyorker.com/tech/elements/earths-mysterious-magnetic-field-stored-in-a-jar?mbid=social_facebook
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That was very interesting! Thanks for sharing.
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Sounds like a refinement of a technique geologists pioneered in studies of the ocean floor. By plotting changes in the rocks' magnetism, they were able to plot the history of the oceans themselves.