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  • # weld time control the period or phase of conduction for heat control also control the time of welding to pass true the piece
    340 bytes (63 words) - 12:46, 20 June 2010
  • Potassium chloride has also been used to create [[heating pad|heat packs]] which employ [[exothermic]] [[chemical reaction]]s,<ref>{{US patent ...ause [[hyperkalemia]] which can lead to [[paresthesia]], [[Heart|cardiac]] conduction blocks, [[fibrillation]], [[Cardiac arrhythmia|arrhythmias]], and [[Scleros
    14 KB (1,921 words) - 16:49, 27 September 2010
  • | [[Electrical conduction]] || [[Electrical current]] <br /><math>\mathbf{J}</math> || [[Electric fie | [[Thermal conduction]] || [[Heat flux]] <br /><math>\mathbf{q}</math>|| [[Temperature gradient]] <br /><math
    23 KB (2,910 words) - 10:07, 20 September 2010
  • ...and radiant barriers do not necessarily protect against heat transfer via conduction or convection. ...han it is on earth, where heat transfer can still occur via convection and conduction, even when an effective radiant barrier is deployed.
    7 KB (1,109 words) - 10:08, 20 September 2010
  • ...s their ability to partition air makes them excellent [[Thermal insulation|heat insulators]] and [[Sound absorption|sound absorbers]]. Though not immune t The heat that the material can withstand is:
    9 KB (1,270 words) - 10:08, 20 September 2010
  • ...h different on-exposure temperatures. Because the thermal conductivity and heat capacity of polymeric materials are generally low, much higher temperatures ...is a semiconductor where electron transitions from the valence band to the conduction band result from the absorption of light at wavelengths in the near UV rang
    12 KB (1,716 words) - 10:10, 20 September 2010
  • ...holds true for very few metals. In a more [[quantum-mechanical]] view, the conduction electrons divide their density equally over all atoms that function as neut ...say that a crystal of a metal represents a single molecule over which all conduction electrons are delocalized in all three dimensions. This means that inside t
    26 KB (4,024 words) - 10:13, 20 September 2010
  • ...commonly used on [[satellite]]s and other applications in [[vacuum]] where conduction and convection are much less significant and radiation dominates. MLI give ..., at 300 K, with an [[emissivity]] of 1, facing away from the sun or other heat sources. From the [[Stefan-Boltzmann law]], this surface will radiate 460
    6 KB (909 words) - 10:13, 20 September 2010
  • ...o of the temperature difference across an insulator and the [[heat flux]] (heat flow per unit area, <math>\dot Q_A</math>) through it or <math> R = \Delta ...es the resistance linearly; double the thickness of a layer means half the heat flow and double the R-value; quadruple, quarters; etc. In practice, this li
    23 KB (3,508 words) - 10:14, 20 September 2010
  • ...insulator because carbon absorbs the [[infrared radiation]] that transfers heat at standard temperatures. ...llows the construction of materials that let light into buildings but trap heat for solar heating.
    26 KB (3,758 words) - 10:14, 20 September 2010
  • The near-vacuum inside VIP's greatly reduces conduction and convection of heat. This is similar to the way in which a [[vacuum flask]] works, but without
    3 KB (427 words) - 10:14, 20 September 2010
  • The materials are used to reduce heat transfer by [[Heat conduction|conduction]], [[Radiant energy|radiation]] or [[convection]] and are employed in varyi ...to a material to reduce the transfer of heat through radiation as well as conduction. Following is a table of materials, most of which have been used for insula
    49 KB (7,250 words) - 10:14, 20 September 2010
  • ...is filled with air bubbles, slows down the [[heat conduction|conduction of heat]] through the pad since air is one of the best (and cheapest) [[thermal ins
    1 KB (183 words) - 10:14, 20 September 2010
  • ...nge of designs and techniques to address the main modes of heat transfer - conduction, radiation and convection materials.<ref>[http://www.buildingscience.com/do ...ings are either over- or under-heated, often consume up to 50 percent more heat and hot water than needed. Fifty-three percent of all carbon dioxide (CO<su
    18 KB (2,595 words) - 10:14, 20 September 2010
  • ...potential thermal stress and breakage and tends to re-radiate the absorbed heat.<ref>http://na.en.sunguardglass.com/SpecificationsResources/TechnicalLibrar ...e/BusWaystoSave_28.html]. Glass performance is measured in two ways: Solar Heat Gain Co-efficient (SHGC), which expresses the proportion of incidental sola
    28 KB (4,352 words) - 10:14, 20 September 2010
  • ...side of a container cold. Insulators are used to minimize that transfer of heat energy. In home insulation, the R-value is an indication of how well a mate ...heat can be reduced by addressing one or more of the three mechanisms of [[heat transfer]] and is dependent on the physical properties of the material empl
    10 KB (1,442 words) - 10:14, 20 September 2010
  • ...ver, most toughened glass is made from float glass that has been specially heat-treated. ...e layers of glass together with layers of [[Polyvinyl butyral|PVB]], under heat and pressure, to create a single sheet of glass. When broken, the PVB inter
    19 KB (2,995 words) - 10:19, 20 September 2010
  • ...1</sup>·K<sup>−1</sup>), which make beryllium the metal with the best heat dissipation characteristics per unit weight. In combination with the relati ...sivated by an oxide layer and does not react with air or water even at red heat.<ref name = "Greenwood">{{Greenwood&Earnshaw}}</ref> Once ignited however b
    41 KB (5,890 words) - 21:34, 20 September 2010
  • ...nyl chloride]] (PVC) plastic. The lead oxide in the compounds improves the heat stability by reacting with hydrochloride and adding to double bonds in the ...s, it acts as a calcium analog, interfering with ion channels during nerve conduction. This is one of the mechanisms by which it interferes with cognition. Acute
    52 KB (7,694 words) - 21:36, 20 September 2010
  • ...us || inflammation || ||1. Rubor (redness) 2. Tumor (swelling)3. Calor (heat) 4. Dolor (pain) ...WhoNamedIt|synd|2447|Rinne's test}} ||comparison of air conduction to bone conduction differentiates sensorineural from conductive deafness
    59 KB (6,670 words) - 21:04, 21 September 2010

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