Comparison Chart
Basis For Comparison | Conduction | Convection | Radiation |
---|---|---|---|
Meaning | Conduction is a process in which transfer of heat takes place between objects by direct contact. | Convection refers to the form of heat transfer in which energy transition occurs within the fluid. | Radition alludes to the mechanism in which heat is transmitted without any physical contact between objects. |
Represent | How heat travels between objects in direct contact. | How heat passes through fluids. | How heat flows through empty spaces. |
Cause | Due to temperature difference. | Due to density difference. | Occurs from all objects, at temperature greater than 0 K. |
Occurence | Occurs in solids, through molecular collisions. | Occurs in fluids, by actual flow of matter. | Occurs at a distance and does not heats the intervening substance. |
Transfer of heat | Uses heated solid substance. | Uses intermediate substance. | Uses electromagnetic waves. |
Speed | Slow | Slow | Fas |