Found 2 items, similar to Magnetic needle.
English → English
Definition: magnetic needle
n : a slender magnet suspended in a magnetic compass on a
mounting with little friction; used to indicate the
direction of the earth's magnetic pole
English → English
Definition: Magnetic needle
, Magnetical \Mag*net"ic*al\
, a. [L.
magneticus: cf. F. magn['e]tique.]
1. Pertaining to the magnet; possessing the properties of the
magnet, or corresponding properties; as, a magnetic bar of
iron; a magnetic needle.
2. Of or pertaining to, or characterized by, the earth's
magnetism; as, the magnetic north; the magnetic meridian.
3. Capable of becoming a magnet; susceptible to magnetism;
as, the magnetic metals.
4. Endowed with extraordinary personal power to excite the
feelings and to win the affections; attractive; inducing
She that had all magnetic force alone. --Donne.
5. Having, susceptible to, or induced by, animal magnetism,
so called; hypnotic; as, a magnetic sleep. See
[1913 Webster +PJC]
See under Amplitude
, a combination of bar or horseshoe magnets
with the like poles adjacent, so as to act together with
, a contrivance connected with a ship's
compass for compensating or neutralizing the effect of the
iron of the ship upon the needle.
, curves indicating lines of magnetic force,
as in the arrangement of iron filings between the poles of
a powerful magnet.
(a) (Chem. Physics) Those elements, as iron, nickel,
cobalt, chromium, manganese, etc., which are capable
or becoming magnetic.
(b) (Physics) In respect to terrestrial magnetism, the
declination, inclination, and intensity.
(c) See under Element
, the hypothetical fluid whose existence was
formerly assumed in the explanations of the phenomena of
magnetism; -- no longer considered a meaningful concept.
, or Magnetic iron ore
. (Min.) Same as
, a slender bar of steel, magnetized and
suspended at its center on a sharp-pointed pivot, or by a
delicate fiber, so that it may take freely the direction
of the magnetic meridian. It constitutes the essential
part of a compass, such as the mariner's and the
, the two points in the opposite polar
regions of the earth at which the direction of the dipping
needle is vertical.
. See Pyrrhotite
(Terrestrial Physics), a disturbance of the
earth's magnetic force characterized by great and sudden
, a telegraph acting by means of a
magnet. See Telegraph