geomagnetismn.
/ˌdʒiːə(ʊ)ˈmaɡnᵻtɪz(ə)m/, U.S. /ˌdʒioʊˈmæɡnəˌtɪz(ə)m/ The magnetic properties and phenomena of the earth; terrestrial magnetism. Also: the branch of science concerned with this.
ΘΚΠ
the world > the earth > earth sciences > geology > geophysics > [noun] > geomagnetism
palaeomagnetism1854
geomagnetism1895
magnetotellurics1960
1895 Amer. Jrnl. Sci. 149 471 This phenomenon owing chiefly to the asymmetrical distribution of geomagnetism is a most complex one.
1929 Geogr. Jrnl. 74 225 Messrs. Tabulski and Brimann conducted radiotechnical investigations, while Mikhalkov devoted himself to geomagnetism.
1938 S. Chapman in Terrestr. Magn. 43 321 Workers on the science of the Earth's magnetism..should regularly adopt the title geomagnetism, and the corresponding adjective geomagnetic, in place of the more usual terrestrial magnetism and terrestrial magnetic.
1971 I. G. Gass et al. Understanding Earth 70 In one sense, geomagnetism is the oldest branch of geophysics.
1990 L. Picknett Encycl. Paranormal 241/1 [He] believes that geomagnetism may even affect psi phenomena such as clairvoyance and telepathy.
2002 P. D. Lowman Exploring Space, Exploring Earth iii. 91 When it became possible to put magnetometers in artificial satellites a new era in the study of geomagnetism began.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
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