thermal conductivity

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thermal conductivity

n.
A measure of the ability of a material to allow the flow of heat from its warmer surface through the material to its colder surface, determined as the heat energy transferred per unit of time and per unit of surface area divided by the temperature gradient, which is the temperature difference divided by the distance between the two surfaces (the thickness of the material), expressed in watts per kelvin per meter.

thermal conductivity

n
(General Physics) a measure of the ability of a substance to conduct heat, determined by the rate of heat flow normally through an area in the substance divided by the area and by minus the component of the temperature gradient in the direction of flow: measured in watts per metre per kelvin. Symbol: λ or k Sometimes shortened to: conductivity
References in periodicals archive ?
Patent 9,688,897 (June 27, 2017), "Carbon Nanotube Composite Material and Thermal Conductor," Kenji Hata and Seisuke Ata (National Institute of Advanced Industrial Science and Technology, Tokyo,japan).
Hook-up to the control center and in the basement with about 300 m thermal conductor, approximately
Duke University engineers have developed a new way of producing thermal diodes, devices which regulate heat to preferentially flow in a certain direction, effectively creating a thermal conductor in the forward direction and an insulator in the reverse direction.
Moreover, FlexiDry complements underfloor heating perfectly by serving as a good thermal conductor and keeping the energy requirement at the source low.
Graphene boasts some very special characteristics - it is extremely tear-resistant, an excellent thermal conductor, and reconciles such conflicting qualities as brittleness and ductility.
What's more, graphene is itself a good thermal conductor, allowing heat to dissipate quickly.
It is an excellent thermal conductor while being electrically insulating.
Because water is an excellent conductor of heat, moisture in a permeable insulation transforms insulation into a thermal conductor.
Some of beryllium's advantages are that it is light (one-third lighter than the next lightest metal, aluminum), strong (six times stronger than steel), less prone to expand and shrink, magnetically more transparent, and a better electrical and thermal conductor than alternative materials.
At low temperatures, the fused silica shell has a lower thermal conductivity, since fused silica is a poorer thermal conductor than alumino-silicate and the shell porosity is higher.
However, if the DUT is massive or a poor thermal conductor, its internal temperature can lag the chamber or platform temperature considerably for a long time.