- published: 20 Feb 2014
- views: 794010
Coaxial cable, or coax (pronounced /ˈkoʊ.æks/), is a type of cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield. Many coaxial cables also have an insulating outer sheath or jacket. The term coaxial comes from the inner conductor and the outer shield sharing a geometric axis. Coaxial cable was invented by English engineer and mathematician Oliver Heaviside, who patented the design in 1880. Coaxial cable differs from other shielded cable used for carrying lower-frequency signals, in that the dimensions of the cable are controlled to give a precise, constant conductor spacing, which is needed for it to function efficiently as a transmission line.
Coaxial cable is used as a transmission line for radio frequency signals. Its applications include feedlines connecting radio transmitters and receivers with their antennas, computer network (Internet) connections, digital audio (S/PDIF), and distributing cable television signals. One advantage of coaxial over other types of radio transmission line is that in an ideal coaxial cable the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors. This allows coaxial cable runs to be installed next to metal objects such as gutters without the power losses that occur in other types of transmission lines. Coaxial cable also provides protection of the signal from external electromagnetic interference.
You watch my face for signs of life
But you can't even see my world inside
What lives behind these tired eyes
Has muddled through the truth and the lies.
Now I feel a change, not I'm shedding my skin over you
You won't recognize as I become someone new
And now, I feel it all fall away
But the love in it all keeps pulling me, keeps pulling me
through
This city's streets are paved in blood
So pull yourself away out of the mud
Give up those things that seem so dear
Release the tension that only keeps you here
You watch my face for signs of life
But you can't even see my world inside
What lives behind these tired eyes
Has muddled through the truth and the lies.
Now I feel a change, not I'm shedding my skin over you
You won't recognize as I become someone new
And now, I feel it all fall away
But the love in it all keeps pulling me, keeps pulling me