| Magnetic Field |
The region within which a body or current experiences magnetic forces |
| Magnetic Flux |
The rate of flow of magnetic energy across or through a surface (real or imaginary) |
| Magnetic Noise |
Changes in the current level within a cable caused by an external magnetic field |
| MCM |
One thousand circular Mils |
| Megarad |
A unit for measuring radiation dosage (equal to one million rads) |
| Megohm |
One million ohms |
| Member |
A group of insulated wires to be cabled with other stranded groups into multiple-membered cable |
| Messenger |
The linear supporting member (usually a high strength steel wire) used as the supporting element of a suspended aerial cable. The messenger may be an integral part of the cable, or exterior to it. |
| Mho |
The unit of conductivity. The reciprocal of an ohm. |
| MHz |
Megahertz (one million cycles per second). |
| Microphonics |
Noise in a system caused by mechanical vibrations |
| Microwave |
A short (usually less than 30cm.) electrical wave |
| Mil |
A unit used in measuring diameter of a wire or thickness of insulation over a conductor. One one thousandth of an inch (.001"). |
| Mis-Match |
A termination having a different impedance than that for which a circuit or cable is designed |
| Modules of Elasticity |
The ratio of stress to strain in an elastic material |
| Moisture Absorption |
The amount of moisture (in percentage) that a material will absorb under special conditions |
| Moisture Resistance |
The ability of a material to resist absorbing moisture from the air or when immersed in water |
| Monomer |
The basic chemical unit used in building a polymer |
| MP |
Designation of multi-purpose cable that meets Vertical Tray flame test |
| MPP |
Designation of multi-purpose cable that meets Steiner Tunnel test |
| MPR |
Designation of multi-purpose cable that meets Riser flame test |
| MTW |
Thermoplastic insulated machine tool wire |
| Multiconductor |
More than one conductor within a single cable complex |
| Mutual Capacitance |
Capacitance between two conductors when all other conductors including ground are connected together, and then regarded as an ignored ground |
| Mutual Inductance |
The ratio of voltage induced in one conductor to the time rate of current change in the separate conductor causing this induction |
| Mylar |
DuPont trademark for polyester material used in the form of a tape |
