How is conduction used in real world?

Answer 1

One of the examples of conduction in real life is cooking, something essential in every household.

From the stove, heat is generated by the fire.

The heat from the stove will then be transmitted through the pot/pans to the oil and finally to the food. This process is conduction.

The heat of the flame is transferred (on a molecule to molecule basis) first through the pan, then through the thin oil layer, and finally to whatever you are cooking.

However, speed of conduction varies from materials. Metal conducts heat more quickly and on the other hand, wood and plastic, slower. Thus, metal is used to make cooking pots and pans while wood and plastic are used to make pot handles and cooking spoons so that our hand will not feel as much heat.

Another example will be barbecue.

The grate or grill upon which the meat rests, having a higher specific heat than the meat, conducts heat to the meat and that is why, when the grill is right, beautiful brown stripes will magically appear upon the surface of the steak.

Then the exterior of the meat conducts heat to the interior, molecule by molecule, cooking it.