ABRASIVE CLOTH

 Tough cloth to whose surface an abrasive such as sand or emery has been bonded for use in grinding or polishing.

Related Terms

PEEL-BACK

The separation of two bonded materials, one or both of which are flexible, by stripping or pulling the flexible material from the mating surface at a 90 or 180 angle to the plane in which it is adhered.

EXTENDED AREA

An engineering surface that has been extended areawise without increasing diameter, as by using pleats (as in filter cartridges) or fins (as in heat exchangers).

ANGLE OF REFRACTION

The angle between a refracted ray and the perpen- dicular to the refracting surface

DRESS

1. To smooth the surface of concrete or stone. 2. The arrangement of connecting wires in a circuit to prevent undesirable coupling and feedback. 3. To shape a tool. 4. To restore a tool to its original shape and sharpness.

FORCE OF GRAVITY

The net attraction between all masses. Gravity attracts all of the particles of a mass and the net effect of this attraction at the earth's surface is equal to 9.81 Newtonâ€™s per kilogram. The force of gravity is often called weight.

SPALLING

The breaking off of the surface refractory material as a result of internal stresses.

NORMAL SECTION LINE

A line on the surface of a reference ellipsoid, connecting two points on that surface, and traced by a plane containing the normal at one point and passing through the other point.

ASSEMBLED BEARING RUNOUT

A displacement of surface of bearing relative to fixed point when one raceway is rotated with respect to other raceway.

BETTI'S METHOD

A method of finding the solution of the equations of equilibrium of an elastic body whose surface displacements are specified; it uses the fact that the dilatation is a harmonic function to reduce the problem to the Dirichlet problem.

BOILING POINT

The temperature at which the saturated vapor pressure of a liquid is equal to the pressure on its surface (the boiling point varies with pressure). The boiling point at atmospheric pressure is the lowest temperature at which the saturated vapor pressure of a liquid is equal to the atmospheric pressure (when a liquid is in an open vessel).

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