Heat is carried along or through a material being transferred along from molecule to molecule through collisions; this form of heat transfer is conduction.

The conduction heat transfer rate is proportional to the difference in temperature between the two sides of the conducting medium.

Hcond = heat-transfer rate for conduction

K = thermal conductivity which depends upon the material

K is large for a good heat conductor.

K is small for a good insulator.

A = cross-sectional area

L = length

T1 and T2 are the temperatures of the two regions a distance L apart.

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(c) 2002, Doug Davis; all rights reserved