Direction of vibration of molecule with respect to transfer of heat

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SUMMARY

The discussion focuses on the relationship between molecular vibration and heat transfer mechanisms: conduction, convection, and radiation. It establishes that in conduction, particularly in metals, electron movement is the primary contributor to heat transfer, while molecular vibration plays a secondary role. The net movement of molecules during heat transfer occurs in the direction of heat flow, although individual molecular vibrations may occur in various directions. It emphasizes that heat transfer is inherently three-dimensional at the molecular level.

PREREQUISITES
  • Understanding of molecular vibration and its role in heat transfer
  • Knowledge of conduction, convection, and radiation as heat transfer mechanisms
  • Familiarity with electron movement in conductive materials
  • Basic principles of thermodynamics
NEXT STEPS
  • Research the role of electron mobility in thermal conductivity of metals
  • Study the principles of three-dimensional heat transfer at the molecular level
  • Explore the differences between conduction, convection, and radiation in detail
  • Investigate the impact of molecular vibration on thermal properties of materials
USEFUL FOR

Physicists, materials scientists, and engineers interested in heat transfer mechanisms and molecular dynamics.

shivakumar06
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the heat causes the molecule to vibrate.how does the molecule vibrate in terms of angle formed by vibrating molecule and the direction of tranfer of heat in conduction, convention and radiation?
 
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That would be really difficult to answer at individual molecule/atom level for conduction. If you are looking at conduction in metals, you should be worried more about movement of electrons which forms a major part of heat transfer and molecular vibration only a little. Having said that, the individual molecules may vibrate in directions other than the direction of heat transfer but the net movement will be in the direction of heat transfer (remember heat transfer is never in one direction - it is always 3 dimensional when you are looking at molecular level)
 

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