line filters
101Anti-spam techniques — To prevent e mail spam (aka unsolicited bulk email), both end users and administrators of e mail systems use various anti spam techniques. Some of these techniques have been embedded in products, services and software to ease the burden on users… …
102Fabry-Pérot interferometer — In optics, a Fabry Pérot interferometer or etalon is typically made of a transparent plate with two reflecting surfaces, or two parallel highly reflecting mirrors. (Technically the former is an etalon and the latter is an interferometer, but the… …
103Inkscape — infobox software name = Inkscape caption = Inkscape 0.46 developer = The Inkscape Team latest release version = 0.46 latest release date = release date|2008|3|24 programming language = C++ and GTK+ operating system = Linux, FreeBSD, Mac OS X,… …
104Internet censorship in Australia — Part of a series on Censorship By media …
105Polarizer — For the photographic filter, see Polarizing filter (Photography). A polarizing filter cuts down the reflections (top) and made it possible to see the photographer through the glass at roughly Brewster s angle although reflections off the back… …
106Portable water purification — devices – also known as point of use (POU) water treatment systems and field water disinfection techniques – are self contained units that can be used by recreational enthusiasts, military personnel, survivalists, and others who must… …
107Black powder in gas pipelines — Black powder is a solid contamination in finished product pipelines. Black powder collects in gas piping that are mostly mill scale, from new sales gas pipeline, flash rust from hydrotest water, post internal pipeline corrosion, and could be… …
108Karplus-Strong string synthesis — is a method of physical modelling synthesis that loops a short waveform through a filtered delay line to simulate the sound of a hammered or plucked string or some types of percussion.Although it is useful to view this as a subtractive synthesis… …
109Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …
110Ceramic water filter — Ceramic water filters are an inexpensive and effective type of water filter, that rely on the small pore size of ceramic material to filter dirt, debris, and bacteria out of water. Contents 1 Method of action 2 Development and expansion 3 See… …
