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Two objects must be touching and it has to transfer heat
Conduction.
conduction
conduction
Conduction
Two objects must be touching and it has to transfer heat
Conduction.
conduction
conduction
Conduction
Conduction
Conduction
conduction
If the two objects are in a vacuum and there is nothing between them, heat transfers by radiation.If they are separated and their is air between them, heat transfers by convection.If the two objects are in contact (touching) with each other, heat transfers by conduction.
convection and radiation heat transfer bot occur without either object being in direct contact with each other.
convection, conduction and radiation
Conduction heat transfer refers to the process of heat transfer between two objects or regions in direct contact with each other. This transfer occurs due to the collision and transfer of energy between the molecules of the objects. It relies on the physical contact and proximity of the objects for heat to be conducted from the hotter object to the cooler one.