What is conduction simple definition?

Conduction is a process of heat transfer that occurs when two objects are in direct contact and there is a temperature difference between them. The heat flows from the hotter object to the cooler object until both objects reach the same temperature. This is why a metal spoon placed in a hot cup of coffee quickly becomes hot to the touch. Metals are good conductors of heat, which is why they are used in cooking utensils and other heat-transferring applications. Conduction occurs in solids, liquids, and gases, but it is most effective in solids and liquids.