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Transmission medium, in physics and telecommunications, any material substance which can propagate waves or energy 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)
Sound is, by definition, the vibration of matter, so it requires a physical medium for transmission, as do other kinds of mechanical waves and heat energy. Historically, science incorporated various aether theories to explain the transmission medium.
For example, a medium may smell the pipe tobacco of a person who smoked during life. Clairgustance or "clear tasting" is the ability to receive taste impressions from a spirit. Claircognizance or "clear knowing", is the ability to know something without receiving it through normal or psychic senses.
Some of the most common examples of mechanical waves are water waves, sound waves, and seismic waves. Like all waves, mechanical waves transport energy. This energy propagates in the same direction as the wave. A wave requires an initial energy input; once this initial energy is added, the wave travels through the medium until all its energy is ...
Permeability, or intrinsic permeability, (k, unit: m 2) is a part of this, and is a specific property characteristic of the solid skeleton and the microstructure of the porous medium itself, independently of the nature and properties of the fluid flowing through the pores of the medium.
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.
An agar plate – an example of a bacterial growth medium*: Specifically, it is a streak plate; the orange lines and dots are formed by bacterial colonies.. A growth medium or culture medium is a solid, liquid, or semi-solid designed to support the growth of a population of microorganisms or cells via the process of cell proliferation [1] or small plants like the moss Physcomitrella patens. [2]
A linear medium if the amplitudes of different waves at any particular point in the medium can be added; A uniform medium or homogeneous medium if its physical properties are unchanged at different locations in space; An anisotropic medium if one or more of its physical properties differ in one or more directions