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A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle- green particles of olivine frequently disseminated.

sed also of inanimate objects; as, the behavior of a ship in a storm; the behavior of the magnetic needle. A gentleman that is very singular in his behavior. Steele. To be upon one's good behavior, To be put upon one's good behavior, to be in a state of trial, in which something important depends on propriety of conduc…

Penetrating rays readily deflected by a magnetic or electric field, emitted by radioactive substances, as radium. They consist of negatively charged particles or electrons, apparently the same in kind as those of the cathode rays, but having much higher velocities (about 35,000 to 180,000 miles per second).…

spool-shaped coil or insulated wire, usually containing a core of soft iron which becomes magnetic when the wire is traversed by an electrical current. Bobbin and fly frame, a roving machine. -- Bobbin lace, lace made on a pillow with bobbins; pillow lace.

A certain process for producing upon articles of iron or steel an adherent coating of the magnetic oxide of iron (which is not liable to corrosion by air, moisture, or ordinary acids). This is accomplished by producing, by oxidation at about 1600º F. in a closed space, a coating containing more or less of the ferric ox…

tough, lustrous, reddish white metal of the iron group, not easily fusible, and somewhat magnetic. Atomic weight 59.1. Symbol Co.

r can only influence us to outward practice. Bp. Warburton. Coercive or Coercitive force (Magnetism), the power or force which in iron or steel produces a slowness or difficulty in imparting magnetism to it, and also interposes an obstacle to the return of a bar to its natural state when active magnetism has ceased. It…

An instrument for determining directions upon the carth's surface by means of a magnetized bar or needle turning freely upon a pivot and pinting in a northerly and southerly direction. He that firat discovered the use of the compass did more for the supplying and increase of useful commodities than those who built work…

An iron plate or magnet placed near the compass on iron vessels to neutralize the effect of the ship's attraction on the needle.

as, a proposition consequent to other propositions. Consequent points, Consequent poles (Magnetism), a number of poles distributed under certain conditions, along the axis of a magnetized steel bar, which regularly has but the two poles at the extremities.

The law that the force exerted between two electric or magnetic charges is directly proportional to the product of the charges and inversely to the square of the distance between them.

ence of electric waves on the resistance of a particular kind of electric circuit, on the magnetization of steel, on the polarization of an electrolytic cell, or on the electric condition of a vacuum has been applied in the various cymoscopes.

-- Declination compass (Physics), a compass arranged for finding the declination of the magnetic needle. -- Declination of the compass or needle, the horizontal angle which the magnetic needle makes with the true north-and-south line.

An instrument for measuring the declination of the magnetic needle.

- Deviation of the compass, the angle which the needle of a ship's compass makes with the magnetic meridian by reason of the magnetism of the iron parts of the ship. -- Deviation of the line of the vertical, the difference between the actual direction of a plumb line and the direction it would have if the earth were a…

ystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone.

One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other.

e and a tangent drawn from the eye to the surface of the ocean. -- Dip of the needle, or Magnetic dip, the angle formed, in a vertical plane, by a freely suspended magnetic needle, or the line of magnetic force, with a horizontal line; -- called also inclination. -- Dip of a stratum (Geol.), its greatest angle of inc…

Having two poles, as a magnetic bar.

rubbing the teeth or gums with a stick or brush dipped in snuff. [U.S.] Dipping needle, a magnetic needle suspended at its center of gravity, and moving freely in a vertical plane, so as to indicate on a graduated circle the magnetic dip or inclination.