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Answer to Question #34101 in Molecular Physics | Thermodynamics for Abdul Rasheed

Question #34101
What are the benefits of conduction,convention and radiation in daily life?Explain in detail by some examples.
Expert's answer
Conduction, convention and radiation are methods of heat transfer.
Conductor is the transfer of heat between substances that are in direct contact with each other.
the better the conductor the more rapidly heat will transfer. Example: cup of tea is heated by hot water inside. If you contact with cup, you will feel hot cup. Because the cup and hot water are in directly contact.
Convention is the up and down movement of gases and liquids caused by heat transfer.
As gas or a liquid is heated it warms expands and rises 'cause it is less dense. Example: If you pour some hot water inside cold water, all liquid will become hot.
Radiation
When electromagnetic waves travel trough space, it is called radiation. When electromagnetic waves come in contact with other objects, the waves transfer the heat to that objects. Example: The waves from the sun are heat our Earth.

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