Conduction is the transfer of heat through solids by means of direct molecular collision. It occurs when there is a difference in temperature between two objects or regions of the same object. The transfer of heat energy in solids by conduction is governed by the physical properties of the material, such as thermal conductivity.

One example of conduction is when you touch a hot metal spoon placed in a pot of boiling water. The heat is transferred from the hot spoon to your hand through conduction. Another example is the cooking of food in a metal pan over a stove. The heat from the flame is conducted through the metal pan to the food, cooking it.

The rate of conduction depends on several factors. First, the thermal conductivity of the material determines how easily heat can flow through it. Metals, such as copper and aluminum, have high thermal conductivities, making them good conductors of heat. On the other hand, materials like wood or plastic have lower thermal conductivities and are poor conductors of heat.

Second, the temperature gradient, or difference in temperature, plays a crucial role in conduction. Heat always flows from regions of higher temperature to regions of lower temperature. The greater the temperature difference, the faster the heat transfer through conduction.

Overall, conduction is an important mode of heat transfer in everyday life. Understanding how heat is transferred through solids helps us make informed choices regarding the use of materials and the design of devices that involve heat transfer.