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Velocity factor

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The velocity factor (VF), also called wave propagation speed or velocity of propagation (VoP or v_\mathrm), of a transmission medium is the ratio of the speed at which a wavefront (of an acoustic signal, for example, or an electromagnetic signal, a radio signal, a light pulse in a fibre channel or a change of the electrical voltage on a copper wire) passes through the medium, to the speed of light in a vacuum. [1]

27 relations: American Radio Relay League, Capacitance, Category 5 cable, Coaxial cable, Computer network, Copper wire and cable, Farad, Henry (unit), Inductance, Metre per second, Multiplicative inverse, Nanosecond, Plenum cable, Propagation delay, Radio, Refractive index, Relative permittivity, Signal velocity, Speed of electricity, Speed of light, Speed of sound, Square root, Telegrapher's equations, Transmission line, Transmission medium, Twin-lead, Vacuum.

The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the USA.

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Capacitance is the ability of a body to store an electrical charge.

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Category 5 cable, commonly referred to as cat 5, is a twisted pair cable for carrying signals.

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Coaxial cable, or coax (pronounced), is a type of cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.

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A computer network or data network is a telecommunications network which allows computers to exchange data.

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Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.

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The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge.

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The henry (symbol H) is the unit of electrical inductance in the International System of Units.

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In electromagnetism and electronics, inductance is the property of an electrical conductor by which a change in current flowing through it induces an electromotive force in both the conductor itselfSears and Zemansky 1964:743 and in any nearby conductors by mutual inductance.

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Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.

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In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x−1, is a number which when multiplied by x yields the multiplicative identity, 1.

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A nanosecond (ns) is an SI unit of time equal to one billionth of a second (10 or 1/1,000,000,000 s).

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Plenum cable is cable that is laid in the plenum spaces of buildings.

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Propagation delay is a technical term that can have a different meaning depending on the context.

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Radio is the radiation (wireless transmission) of electromagnetic energy through space.

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In optics the refractive index or index of refraction n of an optical medium is a dimensionless number that describes how light, or any other radiation, propagates through that medium.

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The relative permittivity of a material is its dielectric permittivity expressed as a ratio relative to the permittivity of vacuum.

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The signal velocity is the speed at which a wave carries information.

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The word electricity refers generally to the movement of electrons (or other charge carriers) through a conductor in the presence of potential and an electric field.

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The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.

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The speed of sound is the distance travelled per unit time by a sound wave propagating through an elastic medium.

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In mathematics, a square root of a number a is a number y such that, in other words, a number y whose square (the result of multiplying the number by itself, or) is a. For example, 4 and −4 are square roots of 16 because.

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The telegrapher's equations (or just telegraph equations) are a pair of coupled, linear differential equations that describe the voltage and current on an electrical transmission line with distance and time.

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In communications and electronic engineering, a transmission line is a specialized cable or other structure designed to carry alternating current of radio frequency, that is, currents with a frequency high enough that their wave nature must be taken into account.

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A transmission medium is a material substance (solid, liquid, gas, or plasma) that can propagate energy waves.

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Twin-lead cable is a two-conductor flat cable used as a transmission line to carry radio frequency (RF) signals.

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Vacuum is space void of matter.

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Redirects here:

Velocity of Propagation, Velocity of propagation, VoP, Wave propagation speed.

References

[1] https://en.wikipedia.org/wiki/Velocity_factor

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