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diffusivity
(redirected from Thermal diffusivity)

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
diffusivity [ˌdɪfjuːˈsɪvɪtɪ]
n
1. (Physics / General Physics) a measure of the ability of a substance to transmit a difference in temperature; expressed as the thermal conductivity divided by the product of specific heat capacity and density
2. (Physics / General Physics) Physics
a.  the ability of a substance to permit or undergo diffusion
b.  another name for diffusion coefficient
3. (Physics / General Physics) another name for diffusion [5]


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Thermophysical properties, such as thermal diffusivity and thermal conductivity, are also discussed.
It is used for insulation and has low thermal diffusivity (measure of how quickly a material can absorb heat from its surroundings).
The thermal diffusivity of rubber compounds is by far too low to equalize such temperature differences by lateral heat conduction during the relatively short injection phase.
 
 
 
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