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The miasma theory (also called the miasmatic theory) is an obsolete medical theory that held that diseases—such as cholera, chlamydia, or the Black Death—were caused by a miasma (μίασμα, Ancient Greek for "pollution"), a noxious form of "bad air", also known as night air.
The theory of sound wave propagation is very similar mathematically to that of electromagnetic waves, so techniques from transmission line theory are also used to build structures to conduct acoustic waves; and these are called acoustic transmission lines.
Dual inheritance theory (DIT), also known as gene–culture coevolution or biocultural evolution, was developed in the 1960s through early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution.
Transmission and switching of calls is performed using the principle of time-division multiplexing (TDM). TDM allows multiple calls to be transmitted along the same physical path, reducing the cost of infrastructure. In call centers. A good example of the use of teletraffic theory in practice is in the design and management of a call center ...
Gender schema theory was formally introduced by Sandra Bem in 1981 as a cognitive theory to explain how individuals become gendered in society, and how sex-linked characteristics are maintained and transmitted to other members of a culture.
The theory applies to transmission lines of all frequencies including direct current and high-frequency. Originally developed to describe telegraph wires, the theory can also be applied to radio frequency conductors, audio frequency (such as telephone lines), low frequency (such as power lines), and pulses of direct current.
The transmission coefficient is a measure of how much of an electromagnetic wave passes through a surface or an optical element. Transmission coefficients can be calculated for either the amplitude or the intensity of the wave. Either is calculated by taking the ratio of the value after the surface or element to the value before.
Such transmission may be chemical, auditory, visual, or tactile whether singly or in combination. There is a new field of research activity termed biosemiotics, and Jesper Hoffmeyer claims that endosymbiosis, self-reference, code duality, the availability of receptors, autopoiesis, and others are the general properties of all living systems.