Question

hii firends

Can you give me answer of how we can to compare the thermal conductivity of different substances.
please activity needed best answer beeded also

Answer 1

Hii pretty

Here your REQUIRED answer

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objective: to compare the thermal conductivity of different substances

material needed" lots of equal thickness of Glass aluminium iron and copper wax and trough containing hot water.

procedure: take four roads of equal thickness made of glass aluminium iron and copper dip theses rods in molten wax to put them into thin film of wax insert them through the sides of a trough containing hot water the rods get heated as the heat travel to wax coating on the road start melting however the extent of melting of wax is different on different got this hostess conduction of heat is not the same in different material glass is poor conductor of heat while copper conductor better than iron and Aluminium.


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@Hero of all us alok

Answer 2

Thermal conductivity (often denoted k, λ, or κ) is the property of a material to conduct heat. It is evaluated primarily in terms of Fourier's Law for heat conduction.

Heat transfer occurs at a lower rate across materials of low thermal conductivity than across materials of high thermal conductivity. Correspondingly, materials of high thermal conductivity are widely used in heat sink applications and materials of low thermal conductivity are used as thermal insulation. The thermal conductivity of a material may depend on temperature. The reciprocal of thermal conductivity is called thermal resistivity.

Thermal conductivity is actually a tensor, which means it is possible to have different values in different directions. See #Thermal anisotropy below.