Wave propagation refers to the ways waves travel through a medium (waveguide). A transmission medium is any material substance, such as fiber-optic cable, twisted-wire pair, coaxial cable, dielectric-slab waveguide, water, or air, that can be used for the propagation of signals, usually in the form of modulated radio, light, or acoustic waves, from one point to another. ... A waveguide is a structure which guides waves, such as electromagnetic waves, light, or sound waves. ...

With respect to the direction of the oscillation relative to the propagation direction, we can distinguish between longitudinal wave and transverse waves. Longitudinal waves, also referred to as compressional waves or pressure waves, are waves that have vibrations along or parallel to their direction of travel. ... A light wave is an example of a transverse wave. ...

Another useful parameter for describing the propagation is the wave velocity that mostly depends on some kind of density of the medium. Wave velocity is a general concept, of various kinds of wave velocities, for an electromagnetic waves phase and speed concerning energy (and information) propagation. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ...

For electromagnetic waves, propagation may occur in a vacuum as well as in a material medium. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. ...

See also: photon, polarization, antenna theory, propagation In physics, the photon (from Greek φως, phōs, meaning light) is the quantum of the electromagnetic field; for instance, light. ... In electrodynamics, polarization (also spelled polarisation) is a property of waves, such as light and other electromagnetic radiation. ... A yagi antenna Most simply, an antenna is an electronic component designed to send or receive radio waves. ... The word propagation can mean: Multiplication or increase, as by natural reproduction. ...