Air gap

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1.(Physics) An air-filled gap in a magnetic or electric circuit; specif., in a dynamo or motor, the space between the field-magnet poles and the armature; clearance.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The stable temperature of the secondary part is the lowest, and that is because some of the heat transferred from the primary iron core to the air gap of the TPMLWG is lost, and the rest of the heat is transferred to secondary part.
This involves strong machining constraints of the sample ring because of the presence of an air gap between it and the conductive walls of the line.
The result turned out to be that the PV modules will increase the temperature of the air gap in PV wall while it is producing electricity.
Several applications in engineering and medicine may benefit from a low frequency magnetic field that is focusable in a large air gap between magnetic poles.
There is an air gap length between the spinneret and coagulation bath.
The new Acer tablet ( sports an 8.0-inch IPS HD (1280x800p) display with 170-degree viewing angle; it also boasts Zero Air Gap technology, where in it eliminates air between the touch panel and LCD module so that the reflection on the tablet screen is reduced and users will have less trouble viewing contents under direct sun light, said the company.
In reality, the most probable case is the inclined air gap eccentricity or rotor misalignment fault.
From observations regarding the study of the air gap effects on the DRA performance, the bandwidth is increased due to the presence of the air gap [16, 17].
The achieved results have disclosed that the effect of natural convection on heat transfer through the thermal-insulating layer mostly depends on the thickness of a small air gap and difference in temperature but rather insignificantly on the tightness of the gap.
However, the use of air gap increases the height/volume of the antenna which is undesired in several (compact) applications [15].
Electrical energy is transferred from a fixed supply source to a moving transformer through a small air gap, reducing energy use and lowering maintenance costs by 80%.