astatic galvanometer

noun (1)

Definition of astatic galvanometer

 (Entry 1 of 2)

: a galvanometer having two needles with opposite polarities that reduce the effect of the earth's magnetism

astatic pair

noun (2)

Definition of astatic pair (Entry 2 of 2)

: two small coplanar magnets of equal moment rigidly attached at right angles to a stiff wire with their moments oppositely directed and forming a system that experiences no directive influence when suspended in a uniform magnetic field

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