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Thermal radiation (900 bytes)
1: '''Thermal radiation''' is [[electromagnetic radiation]] from an object that is simply caused by its [[t... 3: ...y]] is an object that absorbs all electromagnetic radiation that falls onto it. For this case there are formu... 5: A device specially made for thermal radiation may have different purposes: 6: *the radiation itself may be the objective, as in a [[light bulb... 9: ...end to be reflective to avoid absorption of solar radiation energy. E.g. the [[Space Shuttle]] has heat radia... Thermal (920 bytes) 1: .... For other uses of the term '''thermal''', see [[thermal (disambiguation)]].'' 3: ...neven heating of the Earth's surface from [[solar radiation]], and are an example of [[convection]]. 5: ...ty. Generally, when the atmosphere is less stable thermal formation is more likely. 7: ...sible [[cumulus]] [[clouds]]. The rising air in a thermal cools as it ascends, until the [[water vapor]] in... Thermal energy (5629 bytes) 3: '''Thermal energy''' is [[kinetic energy]] due to disordered... 7: ...[Heat]] (also [[heat change]]) is the transfer of thermal energy between two bodies which are at different ... 9: ...nual and inevitable conversion of energy into the thermal energy of the environment. Thus, ''damped'' oscil... 11: ... The [[second law of thermodynamics]] states that thermal energy is special among the types of energies: al... 15: ...its power from passive [[radioactive decay]]. The thermal energy is converted into [[electricity]] by an ar... Thermal grease (1093 bytes) 1: ... [[metal]]) surfaces. It is often used to aid the thermal dissipation of [[central processing unit]]s via a... 3: ... many companies. There are basically two types of thermal grease these days. 5: ...licone]]-based white thermal grease with mediocre thermal conductivity. Often shipped with coolers. 7: ...s. Silver thermal grease does often have a better thermal conductivity (and is of course more expensive) wh... 9: Essentially, thermal grease's primary purpose in computing is to subst... Thermal equator (1846 bytes) 1: ...tor.jpg|thumb|right|250px|Climate map showing the thermal equator]] 2: ...regularities, are impossible, the location of the thermal equator bears no relationship to that of the geog... 6: Still another definition states that the thermal equator is the latitude at which [[insolation]] i... Thermal diode (718 bytes) 1: A '''thermal diode''' is a [[heat engine]] which converts a he... 8: ... A news article on the increases in semiconductor thermal diode efficiency] 9: ...eat into Electricity (Equations for semiconductor thermal diodes)] Thermal pad (1715 bytes) 1: ..., but these do not significantly affect the pad's thermal properties. 3: ... name 'ground pads'. In fact, the purpose of the thermal pad is to prevent the loss of [[body heat]] into ... 5: ==Thermal pads in electronics== 7: In [[computing]] and [[electronics]], thermal pads are commonly found on the underside of [[hea... 9: ... dissipation]] capabilities of heatsinks that use thermal grease. Thermal ionisation (965 bytes) 1: In '''Thermal Ionisation''', also referred to as '''Surface Ion... 16: One application of thermal ionisation is '''Thermal Ionisation Mass Spectrometry (TIMS)'''. The ions ... Thermal neutron (1242 bytes) 1: ...J/kg, hence a speed of 2.2 km/s). They are named 'thermal' as this level of kinetic energy is similar to th... 3: Thermal neutrons have a much larger effective cross-secti... 5: ...]s use a [[neutron moderator]] to slow down, or ''thermalize'' the neutrons that are emitted by [[nuclear f... 12: * [[Thermal reactor]] 14: [[Category:Nucleon|Neutron, Thermal]] Thermal depolymerization (9265 bytes) 3: ...been referred to with various names, including '''thermal conversion process''' ('''TCP'''). Thermal resistance (5059 bytes) 1: '''Thermal resistance''' has two different meanings: 7: It is the reciprocal of [[thermal conductance]]. 9: The [[SI]] units of thermal resistance are: 13: ... two different definitions general/buildings in [[thermal conductance]]). 15: ...t of length)|ft]]² °F·h/[[British thermal unit|Btu]]. Thermal mass (1610 bytes) 1: A '''thermal mass''' in the most general term refers to any [[... 3: ''Thermal mass'' is often confused with [[insulation]], but... 5: ...cific heat and tanks of water are often used as a thermal mass. 7: ... is used to move heat between the collectors, the thermal mass and the living area. 9: ...erior walls in direct juxtaposition to earth, the thermal mass of the earth provides a fairly constant, mod... Thermal analysis (291 bytes) 1: '''Thermal analysis''' is a branch of [[materials science]] ... Thermal conductivity (7245 bytes) 1: The thermal conductivity, λ, is the quantity of heat tra... 3: : Thermal conductivity = Heat flow rate / (Distance ×... 7: In the [[SI]] system of units, thermal conductivity is measured in 21: ...hermal conductivity should not be confused with ''thermal conductance'', which is explained below. 23: ...ld literature you may find the following unit for thermal conductivity: cal/(m·h·°C). This stands for ((cal... Thermal diffusivity (735 bytes) 1: ...' (symbol: <math>\alpha</math>) is the ratio of [[thermal conductivity]] to [[heat capacity]]. 7: '''k''' is thermal conductivity, measured in [[watt]]s per [[metre]]... 13: ... they conduct heat quickly in comparison to their thermal 'bulk'. Thermal lance (1222 bytes) 1: [[Image:Thermal lance.2004-8-4.jpg|thumb|Thermal lance in use. Click to enlarge.]] 3: A '''thermal lance''' or '''thermic lance''' or '''burning bar... 5: A thermal lance does not contain [[thermite]], contrary to ... 7: The intensity of the heat generated by a thermal lance is such that it may be used by [[safe-crack... Thermal printer (1037 bytes) 1: ...t printing to allow plain-paper printouts. Direct thermal paper suffers from sensitivity to heat, abrasion ... Thermal reactor (481 bytes) 1: A '''thermal reactor''' is the most common category of [[nucle... 3: ...educe the speed of [[neutron]]s to low velocity [[thermal neutron]]s, so preventing the capture of the neut... 5: For further information on thermal reactor types, see [[Nuclear_reactor#Types_of_rea... Thermal cycler (1058 bytes) 1: [[image:Pcr_machine.jpg|thumb|200px|Thermal cycler]] 2: ...]] apparatus used for [[PCR]]. The device has a ''thermal block'' with holes where tubes with the [[PCR]] r... 4: ...ng temperature]]s for [[primer]]s. The prizes for thermal cyclers start from [[USD]] 2500 (in [[2004]]). Thermal (disambiguation) (423 bytes) 3: '''Thermal''' can mean: 5: *A low-energy [[neutron]], see [[thermal neutron]], [[neutron moderator]]. 7: ...hings involving heat, or the release thereof. A ''thermal reaction'' refers to a [[chemical reaction]] that...
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