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Dhananjay Singh
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In context of heat transfer, are conduction and diffusion same process?
Conduction and Diffusion: Two Sides of Heat Transfer?
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- Thread starter Dhananjay Singh
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In summary, conduction and diffusion are not the same process in the context of heat transfer. Conduction is a mechanism of heat transfer that occurs through physical contact between two bodies, while diffusion refers to the spreading of heat through any or all of the heat transfer mechanisms. Thermal diffusivity and thermal conductivity are different physical properties that play a role in this process.
- #2
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Are you asking about the physical properties Thermal Conductivity and Thermal Diffusivity?
- #3
Dhananjay Singh
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No, I know thermal conductivity and thermal diffusivity are different physical properties. Thermal diffusivity is the ratio of thermal conductivity of material to the product of its density & specific heat capacity. I want to know about the difference in the process (at microscopic level) and definition of Conduction & Diffusion.Chestermiller said:
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Monsterboy
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Diffusion of heat usually means spreading of heat to a wider volume either through any or all of heat transfer mechanisms i.e conduction, convection or radiation.Dhananjay Singh said:
Conduction is one of the three mechanisms of heat transfer that happens through static physical contact between two or more bodies.
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Dhananjay Singh
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thank you for the most reasonable answer. 
What is the difference between conduction and diffusion?
Conduction is the transfer of heat or electricity through a material, while diffusion is the movement of particles from an area of high concentration to an area of low concentration.
What are some examples of conduction?
Examples of conduction include touching a hot stove and feeling the heat transfer to your hand, or using a metal spoon to stir a hot cup of tea and feeling the spoon heat up.
How does temperature affect conduction and diffusion?
In general, higher temperatures lead to faster rates of conduction and diffusion. This is because higher temperatures increase the kinetic energy of particles, causing them to move and collide more frequently.
Can both conduction and diffusion occur at the same time?
Yes, conduction and diffusion can occur simultaneously. For example, when you heat a pot of water on the stove, the water molecules are both conducting heat from the bottom of the pot and diffusing throughout the liquid to distribute the heat.
Which process is more efficient for transferring heat or particles?
It depends on the specific circumstances. Conduction is more efficient for transferring heat between objects in direct contact, while diffusion is more efficient for transferring particles over longer distances. Both processes are important in different situations.
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