"Field reversal" refers to the change in direction or orientation of a magnetic or electrical field. It means that the normal flow or polarity of the field has been reversed.
Sentences with «field reversal»
(2), and the polar field reversal around that period. (swsc-journal.org)
However, it does suggest that the present - day pattern may be the latest manifestation of a repeating feature that occasionally leads to a global field reversal. (sciencedaily.com)
Which could account for our planet's weird history of magnetic field reversals, with north and south poles swapping places. (discovermagazine.com)