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The magnetism displayed by the south-seeking end of a freely suspended magnet. This i



Related Terms

MAGNETISM

The phenomena associated with magnetic fields and their effects upon magnetic materials, notably iron and steel. The magnetism of the north-seeking end of a freely suspended magnet is called red magnetism; the magnetism of the south-seeking end is called blue magnetism. Magnetism acquired by a piece of magnetic material while it is in a magnetic field is called induced magnetism. Permanent magnetism is retained for long periods without appreciable reduction, unless the magnet is subjected to a demagnetizing force. The magnetism in the intermediate iron of a ship which tends to change as the result of vibration, aging, or cruising in the same direction for a long period but does not alter immediately so as to be properly termed induced magnetism is called sub permanent magnetism. Magnetism which remains after removal of the magne- tizing force may be called residual magnetism. The magnetism of the earth is called terrestrial magnetism or geomagnetism.

RED MAGNETISM

The magnetism of the northseeking end of a freely suspended magnet. This is the magnetism of the earth’s south magnetic pole.

ELEPHANTA

A strong southerly or southeasterly wind which blows on the Malabar coast of India during the months of September and October and marks the end of the southwest monsoon.

ARBOR SUPPORT

A device to support the outer end or intermediate point of an arbor.

BOOTSTRAP CIRCUIT

A single-stage amplifier in which the output load is connected between the negative end of the anode supply and the cathode, while signal voltage is applied between grid and cathode; a change in grid voltage changes the input signal voltage with respect to ground by an amount equal to the output signal voltage.

ADAPTER SLEEVE

An axially slotted sleeve with cylindrical bore, tapered outside surface and male screw thread at small end used with locknut and lockwasher for mounting of bearings with tapered bore on cylindrical outside surface of shaft. Also called pull-type sleeve.

EXHAUST HEAD

A device placed on the end of an exhaust pipe to remove oil and water and to reduce noise.

HARDINGE MILL

A tricone type of ball mill; the cones become steeper from the feed end toward the discharge end.

TERMINAL VELOCITY

The highest sustained air stream velocity existing in the mixed air path at the end of the throw.

PANCAKE AUGER

An auger having one spiral web, 12 to 15 inches (30 to 38 centimeters) in diameter, attached to the bottom end of a slender central shaft; used as removable deadman to which a drill rig or guy line is anchored.

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