The physical act of the transfer of thermal energy between two systems by the dissipation of heat is known as heat transfer. The three modes of heat transfer are conduction, convection and radiation. Let us look at the differences between all three heat transfer methods to understand them better.
Difference between Conduction Convection and Radiation
| Conduction | Convection | Radiation |
| In conduction, heat transfer occurs between objects by direct contact. | In convection, the heat transfer takes within the fluid. | In radiation, heat transfer occurs through electromagnetic waves without involving particles. |
| The heat transfer takes place due to the difference in temperature. | Heat transfer occurs due to the difference in density. | The heat transfer occurs in all objects with a temperature greater than 0 K. |
| Heat transfer in conduction is slow | Heat transfer in convection is faster. | Heat transfer in radiation is the fastest. |
| Heat transfer occurs through a heated solid object. | Heat transfer occurs through intermediate objects. For example, heat transfer between air and water. | Heat transfer occurs through electromagnetic waves. |
| It does not follow the law of reflection and refraction. | It does not follow the law of reflection and refraction. | It follows the law of reflection and refraction. |
The differences between the modes of heat transfer should be understood clearly, as this is an important topic in thermodynamics.
See the video below to learn about charging by conduction
Frequently Asked Questions – FAQs
In which process does heat transfer occur between objects by direct contact?
Which is the fastest mode of heat transfer?
Heat transfer in radiation is the fastest.
Choose yes or no: Does conduction follow the law of reflection and refraction?
Define convection.
The heat transfer through electromagnetic waves is an example of which type of heat transfer?
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