Search results

• Ceramic materials
  ...er the strength of a structure beyond that which might be predicted by the theory of crystalline objects, a different property of tee material—above and be ...of a material to incoming lightwaves of a range of wavelengths. [[Optical filter|Frequency selective optical filters]] can be utilized to alter or enhance t
  28 KB (3,876 words) - 10:08, 20 September 2010
• Ion-exchange resin
  ...nants from water - this is usually done by using an [[activated charcoal]] filter mixed in with the resin. There are some ion-exchange resins that do remove * C. E. Harland, Ion exchange: Theory and Practice, The Royal Society of Chemistry, Cambridge, 1994.
  10 KB (1,392 words) - 10:10, 20 September 2010
• Defoamer
  ...irst= P.R.|editor1-last= Garret |editor1-link= |others= |title= Defoaming. Theory and Industrial Applications |url= |format= |accessdate= |edition= |series= ...irst= P.R.|editor1-last= Garret |editor1-link= |others= |title= Defoaming. Theory and Industrial Applications |url= |format= |accessdate= |edition= |series=
  11 KB (1,544 words) - 10:18, 20 September 2010
• Bamboo
  ...this semelparous mass flowering is the predator satiation hypothesis. This theory argues that by fruiting at the same time, a population increases the surviv A second theory, the fire cycle hypothesis, argues that periodic flowering followed by deat
  47 KB (7,158 words) - 10:22, 20 September 2010
• Scientific phenomena named after people
  * [[BCS superconduction theory]] — [[John Bardeen]], [[Leon Cooper]], and [[Robert Schrieffer]] * [[Brans–Dicke theory]] — [[Carl H. Brans]] and [[Robert H. Dicke]]
  64 KB (7,072 words) - 21:05, 21 September 2010
• 2001 anthrax attacks
  Another hidden-message theory finds possible al Qaeda code in the envelopes.<ref>http://www.newanthraxand ...8-03-30}}</ref> On October 28, 2002, The Washington Post reported, "FBI's Theory on Anthrax is Doubted"<ref name="washingtonpost.com">{{cite news| url=http:
  86 KB (13,009 words) - 17:23, 27 September 2010
• Congressional response to the NSA warrantless surveillance program
  ...And I don't think it's plausible to believe that any kind of discussion in theory that the President has extraordinary powers to surveil in wartime would per ...one rapidly approaches the point where the warrant process ceases to be a filter and judges have no basis for refusing to grant applications. It is not just
  103 KB (16,549 words) - 17:28, 27 September 2010
• Anthrax
  ...f-face disposable respirator with a high-efficiency particulate air (HEPA) filter, is recommended.<ref>National Personal Protective Technology Laboratory [ht ...s generation#Spontaneous generation|spontaneous generation]] versus [[cell theory]]. Koch went on to study the mechanisms of other diseases and was awarded t
  53 KB (7,798 words) - 17:33, 27 September 2010
• United States raw milk debate
  ...first used in the United States in the 1890s after the discovery of [[germ theory]] to control the hazards of highly contagious bacterial diseases including ...or can be sucked into the milk line by the system vacuum. A filter sock or filter disk in the pipeline prevents large particulate contaminants from entering
  23 KB (3,442 words) - 19:37, 13 October 2010
• Miller effect
  ...work in 1920, he was working on [[vacuum tube]] triodes, however the same theory applies to more modern devices such as bipolar and MOS [[transistors]]. ...gh enough that ω ''C_MR_A'' ≥ 1. It is a [[low-pass filter]]. In analog amplifiers this curtailment of frequency response is a major i
  10 KB (1,754 words) - 14:48, 10 December 2011
• Pole splitting
  |title=Operational amplifiers: theory and design ...on.<ref>A factor of two results in the ''maximally flat'' or [[Butterworth filter|Butterworth]] design for a two-pole amplifier. However, real amplifiers hav
  18 KB (3,069 words) - 14:48, 10 December 2011
• Image impedance
  ...cept used in electronic network design and analysis and most especially in filter design. The term image impedance applies to the impedance seen looking in ==Usage in filter design==
  7 KB (1,093 words) - 14:48, 10 December 2011
• Image filter end terminations
  {{Linear analog electronic filter|filter1=hide|filter2=show|filter3=hide}} ::''For an overview of image filters see [[composite image filter]].''
  7 KB (1,107 words) - 14:48, 10 December 2011
• Dual impedance
  ...r network]] of series inductors and [[Shunt (electrical)#Use in electronic filter circuits|shunt]] capacitors. [[Image:Graphic method 7.svg|thumb|left|350px|A low-pass filter implemented in Cauer topology]]
  7 KB (1,146 words) - 14:48, 10 December 2011
• Prototype filter
  ...]. However, in principle, the method can be applied to any kind of linear filter or [[signal processing]], including mechanical, acoustic and optical filter ...om it by applying a scaling factor to the components of the prototype. The filter design need thus only be carried out once in full, with other filters being
  15 KB (2,320 words) - 14:48, 10 December 2011
• Lattice phase equaliser
  [[Image:Lattice filter, general.svg|thumb|300px|Lattice filter topology]] ...name=Darlington>Darlington, S, "A history of network synthesis and filter theory for circuits composed of resistors, inductors, and capacitors", ''IEEE Tran
  10 KB (1,512 words) - 14:48, 10 December 2011
• Bessel filter
  {{Linear analog electronic filter|filter2=hide|filter3=hide}} ...s]] and [[signal processing]], a '''Bessel filter''' is a type of [[linear filter]] with a maximally flat [[group delay]] (maximally linear [[phase response]
  6 KB (893 words) - 14:48, 10 December 2011
• Network synthesis filters
  ...er]]s. The essence of the method is to obtain the component values of the filter from a given mathematical [[polynomial]] ratio expression representing the ...equired values of the filter components. In a digital implementation of a filter, H(s) can be implemented directly.<ref name=Matt83>Matthaei, pp83-84</ref>
  11 KB (1,738 words) - 14:48, 10 December 2011
• Bartlett's bisection theorem
  ...twork is sometimes known as a filter X-section following the common filter theory practice of naming sections after alphabetic letters to which they bear a r ...<ref>[[Vitold Belevitch|Belevitch, V]], "Summary of the History of Circuit Theory", ''Proceedings of the IRE'', '''vol 50''', pp850, May, 1962.</ref>
  8 KB (1,295 words) - 14:49, 10 December 2011
• Bridged T delay equaliser
  ...ant delay at all frequencies in the signal path. It is a class of [[image filter]]. ...two channels arrive by substantially different routes it can require many filter sections to fully equalise the delay.
  5 KB (787 words) - 14:49, 10 December 2011

View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)