plastics filter

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• Filter paper — is a semi permeable paper barrier placed perpendicular to a liquid flow. It is used to separate fine solids from liquids. In laboratories, filter paper is usually used with a filter funnel, Hirsch, or Buchner funnel.TypesFilter paper comes in… …   Wikipedia

• Photographic filter — Four photographic filters. Clockwise, from top left, an infrared hot mirror filter, a polarising filter, and a UV filter. The larger filter is a polariser for Cokin style filter mounts. In photography and videography, a filter is a camera… …   Wikipedia

• Diffusion filter — A diffusion filter is a translucent photographic filter used for a special effect. When used in front of the camera lens, a diffusion filter softens subjects and generates a dreamy haze. This can also be improvised by smearing petroleum jelly on… …   Wikipedia

• Mann+Hummel — GmbH Type GmbH Industry Automotive supplier and general engineering Founded 1941 Headquarters Ludwigsburg, Baden Württemberg, Germany Area served Worldwide …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• environmental works — ▪ civil engineering Introduction       infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …   Universalium

• Marine pollution — While marine pollution can be obvious, as with the marine debris shown above, it is often the pollutants that cannot be seen that cause most harm. Marine pollution occurs when harmful, or potentially harmful effects, can result from the entry… …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium

• aquarium — aquarial, adj. /euh kwair ee euhm/, n., pl. aquariums, aquaria /euh kwair ee euh/. 1. a glass sided tank, bowl, or the like, in which fish or other living aquatic animals or plants are kept. 2. a building or institution in which fish or other… …   Universalium

• Wild fisheries — A fishery is an area with an associated fish or aquatic population which is harvested for its commercial value. Fisheries can be marine (saltwater) or freshwater. They can also be wild or farmed. This article is an overview of the habitats… …   Wikipedia