Air Gap: In a speaker's motor section, the space between the top plate and the pole piece. This is where the magnetic flux field is concentrated and where the voice coil interacts with it.

 

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Air Gap: In a speaker's motor section, the space between the top plate and the pole piece. This is where the magnetic flux field is concentrated and where the voice coil interacts with it.

Air space : The area between insulation facing and interior of exterior wall coverings. Normally a 1' air gap.

Impaired Credit: When a company's total capital is less than the par value of all its capital stock.

Impaired Capital: A bond portfolio strategy whose goal is to eliminate the portfolio's risk, in case of a general change in the rate of interest, through the use of duration.

Impairment: An alteration of health status, assessed by objective medical criteria. This is a medical finding.

Indoor Air: Breathing air inside a habitable structure, often highly polluted because of lack of exchange with fresh oxygen from outdoors. Solvents, smoke, paints, furniture glues, carpet padding, and o . . . View Full Definition

Indicated Airspeed (IAS): A direct instrument reading obtained from an air speed indicator uncorrected for altitude, temperature, atmospheric density, or instrument error. Compare CALIBRATED AIRSPEED and TRUE AIRSPEED.

High-Wing Airplane: a monoplane with the single supporting surface mounted on top of the fuselage.

Hairpin: A very slow, tight, sometimes 180-degree, turn.

Hair Shaft: The portion of a hair that extends above the skins surface.