An iron atom that has a positive electric charge of +3. (Fe2+)


Related Terms

POLARIZED-VANE AMMETER

An ammeter of only moderate accuracy in which the current to be measured passes through a small coil, distorting the field of a circular permanent magnet, and an iron vane aligns itself with the axis of the distorted field, the deflection being roughly proportional to the current.

PLUNGER-TYPE INSTRUMENT

Moving-iron instrument in which the pointer is attached to a long and specially shaped piece of iron that is drawn into or moved out of a coil carrying the current to be measured.

NONSKID

Pertaining to a surface that is roughened to reduce slipping, as a concrete floor treated with iron filings or carborundum powder, or indented while wet.

NEEDLE WEIR

A type of frame weir in which the wooden barrier is constructed of vertical square-section timbers placed side by side against the iron frames.

MAGNETIC PULLEY

Magnetized pulley device for a conveyor belt; removes tramp iron from dry products being moved by the belt.

LIGHTING-OFF TORCH

A torch used to ignite a fuel oil burner; it consists of asbestos cloth wrapped around an iron rod and soaked with oil.

IRON OXIDE PROCESS

A process by which a gas is passed through iron oxide and wood shavings to remove sulfides.

IRON COUNT

An analytic determination of the iron compounds in a product stream; reflects the occurrence and the extent of corrosion.

I BEAM

A rolled iron or steel joist having an I section, with short flanges.

HYSTERESIS CLUTCH

A clutch in which torque is produced by attraction between induced poles in a magnetized iron ring and the control field.

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