Maxwellian velocity distribution

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SUMMARY

The discussion centers on the behavior of the Maxwellian velocity distribution of particles in an ideal gas as the absolute temperature approaches 0 K. Participants confirm that at ultra-low temperatures, the classical Maxwell-Boltzmann distribution becomes ineffective, and quantum statistics such as Fermi-Dirac or Bose-Einstein distributions must be utilized. The breakdown of Maxwell's distribution occurs because classical mechanics fails to account for quantum effects, leading to significant changes in particle behavior. Additionally, as temperature decreases, the gas condenses, further invalidating the applicability of Maxwell's distribution.

PREREQUISITES
  • Understanding of Maxwell-Boltzmann distribution
  • Familiarity with quantum statistics, specifically Fermi-Dirac and Bose-Einstein distributions
  • Basic knowledge of thermodynamics and temperature concepts
  • Awareness of the behavior of gases at varying temperatures
NEXT STEPS
  • Research Fermi-Dirac distribution and its applications in low-temperature physics
  • Explore Bose-Einstein distribution and its significance in quantum mechanics
  • Study the implications of temperature on gas behavior and phase transitions
  • Investigate the limitations of classical mechanics in describing quantum systems
USEFUL FOR

Students and enthusiasts of thermodynamics, physicists interested in low-temperature phenomena, and anyone seeking to understand the transition from classical to quantum statistical mechanics.

samreen
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hey, I've just begun on elementary concepts in heat and thermodynamics. nd i was wondering...for the probabilistic maxwellian distribution of velocities in an ideal gas, as absolute temperature of the gas system tends to 0 K, the distribution plot will tend to the delta function, wnt it? can anyone please explain if this is what will happen, and if yes, what's the actual physical significance of this result? [please assume i dnt kno anything, and explain everything :) ]
 
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samreen said:
hey, I've just begun on elementary concepts in heat and thermodynamics. nd i was wondering...for the probabilistic maxwellian distribution of velocities in an ideal gas, as absolute temperature of the gas system tends to 0 K, the distribution plot will tend to the delta function, wnt it? can anyone please explain if this is what will happen, and if yes, what's the actual physical significance of this result? [please assume i dnt kno anything, and explain everything :) ]

As the temp approaches 0K,maxwellian distribution is no longer effective
You should use quantum statistics like Fermi-Dirac distribution or Bose-Einstein distribution at ultra-low temp
 
thanx...im cluless bt the other 2 tho
 
why does maxwells breakdown or whatever, for low T?
 
samreen said:
why does maxwells breakdown or whatever, for low T?

As temp goes ultra-low,the quantum nature of the particles (atoms,molecules.ions,etc) becomes more significant,so the classical Maxwell-Boltzmann distribution,which neglects all quantum effects, no longer applies.
 
the gas will condense, itl no longer be a gas. so maxwells distribution ought not to apply. I've got it partly.
 

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