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Interaction

Interactionis also a Science fiction convention

Interaction is a kind of actionwhich occurs as two or more objectshave an effectupon one another. The idea of a two-way effect is essential in the concept of interaction instead of a one-way causaleffect. Combinations of many simple interactions can lead to surprising emergentphenomena. It has different tailored meanings in various sciences.

Casual examples of interaction outside of science include:

communicationof any sort, for example two or more people talking to each other, or communication among groups, organisations, nationsor states: trade, migration, foreign relations, transportation; etc.
the feedbackduring operation of a machinessuch as a computer or a tool, for example the interaction between a driver and the position of his or her car on the road: by steering the driver influences this position, by looking this information returns to the driver;

Inhaltsverzeichnis

1 Chemistry and medicine
2 Communications
3 Media
4 Physics
5 Sociology
6 See also

Chemistry and medicine

In medicine, most medicationscan be safely used with other medicinesbut particular combinationsof medicines need to be monitored for interactions, often by the pharmacist. In molecular biology, the knowledge on gene/proteininteraction among themselves and with their metabolitesis referred to as molecular pathways.

Interactions between medications fall generally into one of two main categories; pharmacodynamic(involving the actions of the two interacting drugs), and pharmacokinetic(involving the absorption, distribution, metabolism, and excretion of one or both of the interacting drugs upon the other).

Sometimes two or medications are used together to create an extra effect- e.g. two different pain killersto provide more complete pain control. These interactions are usually intentional but need to be monitored by the doctorbecause patientscan end up with more effect than is actually required.

Sometimes two or more medications work against each other. These interactions are usually well-known and avoided unless both medicines are essential. Careful monitoringis used to prevent problems from the results of the interaction.

Other interactions may cause one medicine to have less or more effectthan expected and these are usually managed by a dosage adjustment.

Communications

In communications, interactive communicationoccurs when sourcestake turns transmittingmessagesbetween one another. This should be distinguished from transactive communication, in which sources transmit messages simultaneously.

Media

In media, interactivityis a feature of the media in question. As a result of digitalizationand convergencethe consumption of media is becoming more interactive. In media the strive for interaction is also a cultural trend.

Physics

In physics, an interaction or forcespecifically refers to the action of one physical object upon another and results in a potential energy- the physical objects under consideration may range from pointparticlesto quantum fields. For example, the interaction of chargedparticlestakes place through the mediation of electromagnetic fields, whereas beta decayoccurs by means of the weak interaction. There are believed to be four fundamental interactionsin Nature.

Sociology

In sociology, social interactionis a dynamic, changing sequence of social actionsbetween individuals (or groups) who modify their actions and reactions due to the actions by their interaction partner(s). Social interactions can be differentiated into:

accidental - not planned and likely not repeated. For example, asking a stranger for directions or shopkeeper for product availabity.
repeated - not planned, bound to happen from time to time. For example, accidentally meeting a neighbour from time to time when walking on your street;
regular - not planned, but very common, likely to raise questions when missed. Meeting a doorman or a security guard every workday in your workplace, dining every day in the same restaurant, etc.
regulated - planned and regulated by customs or law, will definitely raise questions when missed. Interaction in a workplace (coming to work, staff meetings, etc.), family, etc.

Social interactions form the basis for social relations.