Found 1 items, similar to Magnetic iron.
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Definition: Magnetic iron
([imac]"[u^]rn), n. [OE. iren, AS. [=i]ren,
[=i]sen, [=i]sern; akin to D. ijzer, OS. [=i]sarn, OHG.
[=i]sarn, [=i]san, G. eisen, Icel. [=i]sarn, j[=a]rn, Sw. &
Dan. jern, and perh. to E. ice; cf. Ir. iarann, W. haiarn,
1. (Chem.) The most common and most useful metallic element,
being of almost universal occurrence, usually in the form
of an oxide (as hematite, magnetite, etc.), or a hydrous
oxide (as limonite, turgite, etc.). It is reduced on an
enormous scale in three principal forms; viz., cast iron
, steel, and wrought iron
. Iron usually appears
dark brown, from oxidation or impurity, but when pure, or
on a fresh surface, is a gray or white metal. It is easily
oxidized (rusted) by moisture, and is attacked by many
corrosive agents. Symbol Fe (Latin Ferrum). Atomic number
26, atomic weight 55.847. Specific gravity, pure iron,
7.86; cast iron, 7.1. In magnetic properties, it is
superior to all other substances.
Note: The value of iron is largely due to the facility with
which it can be worked. Thus, when heated it is
malleable and ductile, and can be easily welded and
forged at a high temperature. As cast iron, it is
easily fusible; as steel, is very tough, and (when
tempered) very hard and elastic. Chemically, iron is
grouped with cobalt and nickel. Steel is a variety of
iron containing more carbon than wrought iron, but less
that cast iron. It is made either from wrought iron, by
roasting in a packing of carbon (cementation) or from
cast iron, by burning off the impurities in a Bessemer
converter (then called Bessemer steel), or directly
from the iron ore (as in the Siemens rotatory and
2. An instrument or utensil made of iron; -- chiefly in
composition; as, a flatiron, a smoothing iron, etc.
My young soldier, put up your iron. --Shak.
3. pl. Fetters; chains; handcuffs; manacles.
Four of the sufferers were left to rot in irons.
4. Strength; power; firmness; inflexibility; as, to rule with
a rod of iron.
5. (Golf) An iron-headed club with a deep face, chiefly used
in making approaches, lifting a ball over hazards, etc.
[Webster 1913 Suppl.]
. See Wrought iron
, bog ore; limonite. See Bog ore
, under Bog
(Metal.), an impure variety of iron, containing
from three to six percent of carbon, part of which is
united with a part of the iron, as a carbide, and the rest
is uncombined, as graphite. It there is little free
carbon, the product is white iron
; if much of the carbon
has separated as graphite, it is called gray iron
also Cast iron
, in the Vocabulary.
. See under Fire
. See under Fire
. See Cast iron
(Naut.), said of a sailing vessel, when, in
tacking, she comes up head to the wind and will not fill
away on either tack.
. See Magnetite
(Metal.), iron sufficiently pure or soft to
be capable of extension under the hammer; also, specif., a
kind of iron produced by removing a portion of the carbon
or other impurities from cast iron, rendering it less
brittle, and to some extent malleable.
(Chem.), iron forming a large, and often the
chief, ingredient of meteorites. It invariably contains a
small amount of nickel and cobalt. Cf. Meteorite
, the form in which cast iron is made at the blast
furnace, being run into molds, called pigs.
. See under Reduced
. See Hematite
Too many irons in the fire
, too many objects or tasks
requiring the attention at once.
. See Cast iron
(Metal.), the purest form of iron commonly
known in the arts, containing only about half of one per
cent of carbon. It is made either directly from the ore,
as in the Catalan forge or bloomery, or by purifying
(puddling) cast iron in a reverberatory furnace or
refinery. It is tough, malleable, and ductile. When formed
into bars, it is called bar iron
, 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