magnetic needle

Example Sentences

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Finding the magnetoreceptors responsible for triggering these neurons has been like looking for a magnetic needle in a haystack.

From Science Magazine • Jun. 23, 2016

Last week Bendix Aviation Corp. announced a new automatic compass that makes the old magnetic needle* look as obsolete as a warrior's spear.

From Time Magazine Archive

He said: "Nothing must deflect the magnetic needle."

From Time Magazine Archive

Saddle Island, magnetic, needle much affected, scenery, whales, kelp-fish, 199.

From Narrative of the surveying voyages of His Majesty's ships Adventure and Beagle, between the years 1826 and 1836 Volume I. - Proceedings of the First Expedition, 1826-1830 by Fitzroy, Robert

Aclinic, ak-lin′ik, adj. without inclination, applied to the magnetic equator, which cuts the terrestrial equator, inasmuch as on that line the magnetic needle has no dip, but lies horizontal.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various