The particles in liquids and gases are spaced further apart than those in solids. Therefore, collisions between molecules are less frequent, thus the process of conduction in liquids and gases is inefficient.
This also explains why air is a poor conductor of heat as compared to water, which in turn is a poor conductor of heat compared to most solids.
Most liquids are poor conductors of heat except molten mercury.
Monday, June 15, 2009
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