Diffuser can refer to any device that diffuses in some manner such as:
Diffuser (automotive), a shaped section of a car's underbody which improves the car's aerodynamic properties
Diffuser (breathing set part), a device fitted over an underwater breathing set's blowoff hole to break up the resulting bubbles
Diffuser (hair), an attachment that diffuses or spreads out air flow from a hair dryer.
Diffuser (optics), a device that diffuses or spreads out or scatters light in some manner.
Diffuser (radiometry), a plate whose diffuse transmittance or reflectance is utilized in different detectors of radiation.
Diffuser (sewage), an aerating device for sewage and industrial waste water treatment plants
Diffuser (thermodynamics), a device that controls the characteristics of a fluid at the entrance to a thermodynamic open system
Diffuser can also refer to: A diffuser, in an automotive context, is usually a shaped section of the car underbody which improves the cars aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere. ... A diffuser is a device fitted over an underwater breathing sets blowoff hole to break up the resulting bubbles very small so they will not be seen from out of the water. ... This page meets Wikipedias criteria for speedy deletion. ... In optics a diffuser is any device that diffuses or spreads out or scatters light in some maner. ... An Air Diffuser or Membrane Diffuser is an aeration device typically in the shape of a disc, tube or plate, which is used to transfer oxygen into sewage or industrial wastewater. ... A diffuser is the mechanical device that is designed to control the characteristics of a fluid at the entrance to a thermodynamic open system. ...
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The term diffusion is used in cultural anthropology to describe the spread of cultural items — such as ideas, styles, religions, technologies, etc. — between individuals, whether within a single culture or from one culture to another.
For example, the practice of agriculture is widely believed to have diffused from somewhere in the Middle East to all of Eurasia, less than 10,000 years ago, having been adopted by many pre-existing cultures.
Those disputed are fueled in part by the overuse of cultural diffusion, starting in the late 19th century, as a blanket explanation for all similarities between widely dispersed cultures.
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