propagation velocity of electromagnetic waves

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• Swihart velocity — Originally, in superconducting transmission lines, the Swihart velocity is the propagation velocity of electromagnetic waves along transmission line.Swihart velocity plays an important role in the physics of long Josephson junctions (LJJ) that,… …   Wikipedia

• electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …   Universalium

• Electromagnetic radiation — Electromagnetism Electricity · …   Wikipedia

• Propagation constant — The propagation constant of an electromagnetic wave is a measure of the change undergone by the amplitude of the wave as it propagates in a given direction. The quantity being measured can be the voltage or current in a circuit or a field vector… …   Wikipedia

• Radio waves — are electromagnetic waves occurring on the radio frequency portion of the electromagnetic spectrum. A common use is to transport information through the atmosphere or outer space without wires. Radio waves are distinguished from other kinds of… …   Wikipedia

• Phase velocity — periodic gravity waves on the surface of deep water. The red dot moves with the phase velocity, and is located at a fixed wave phase: the crest for the case shown.The phase velocity (or phase speed) of a wave is the rate at which the phase of the …   Wikipedia

• Signal velocity — The signal velocity is the speed at which a wave carries information. It describes how quickly a message can be communicated (using any particular method) between two separated parties. Every signal velocity is always slower than (or equal to)… …   Wikipedia

• Wave propagation — is any of the ways in which waves travel through a waveguide.With respect to the direction of the oscillation relative to the propagation direction, we can distinguish between longitudinal wave and transverse waves.For electromagnetic waves,… …   Wikipedia

• Near-field electromagnetic ranging — (NFER) refers to any radio technology employing the near field properties of radio waves as a Real Time Location System (RTLS). Contents 1 Overview 2 Technical Discussion 2.1 Advantages …   Wikipedia

• Optical medium — An optical medium is material through which electromagnetic waves propagate. It is a form of transmission medium. The permittivity and permeability of the medium define how electromagnetic waves propagate in it. The medium has an intrinsic… …   Wikipedia

• Interference (wave propagation) — Two point interference in a ripple tank. In physics, interference is the phenomenon in which two waves superpose each other to form a resultant wave of greater or lower amplitude. Interference usually refers to the interaction of waves that are… …   Wikipedia