Search results
Results From The WOW.Com Content Network
Active laser medium (also called gain medium or lasing medium), a quantum system that allows amplification of power (gain) of waves passing through (usually by stimulated emission) Optical medium, in physics, a material through with electromagnetic waves propagate; Excitable medium, a non-linear dynamic system which has the capacity to ...
A physical medium in data communications is the transmission path over which a signal propagates. Many different types of transmission media are used as communications channel . In many cases, communication is in the form of electromagnetic waves.
Symbol used to represent in situ permeability tests in geotechnical drawings. In fluid mechanics, materials science and Earth sciences, the permeability of porous media (often, a rock or soil) is a measure of the ability for fluids (gas or liquid) to flow through the media; it is commonly symbolized as k.
In fluid mechanics, fluid flow through porous media is the manner in which fluids behave when flowing through a porous medium, for example sponge or wood, or when filtering water using sand or another porous material. As commonly observed, some fluid flows through the media while some mass of the fluid is stored in the pores present in the media.
Physical medium may refer to: Transmission medium , a system or substance that can mediate the propagation of signals for the purposes of telecommunication Physical mediumship , the manipulation of energies and energy systems by spirits
Factor by which the phase velocity of light is reduced in a medium unitless 1: intensive, scalar Reluctance: resistance to the flow of magnetic flux H −1: L −2 M −1 T 2 I 2: scalar Solid angle: Ω: Ratio of area on a sphere to its radius squared steradian (sr) ∠ 2: Specific energy: Energy density per unit mass
A medium having this common property may be termed a dispersive medium. Although the term is used in the field of optics to describe light and other electromagnetic waves , dispersion in the same sense can apply to any sort of wave motion such as acoustic dispersion in the case of sound and seismic waves, and in gravity waves (ocean waves).
In optics, an optical medium is material through which light and other electromagnetic waves propagate. It is a form of transmission medium . The permittivity and permeability of the medium define how electromagnetic waves propagate in it.