New Reply

Maxwell speed distribution

 
Share Thread Thread Tools
Nov16-12, 12:32 AM   #1
 

Maxwell speed distribution


I want to know if the Maxwell speed distribution is the following.

An ideal gas system of n particles, say constrained to the unit box, has the phase space ([0,1]^3 x R^3)^n. That is, [0,1]^3 for the position of a particle, R^3 for the velocity, and all to the n since there are n particles. Now in this space we can take the surface of constant energy say E=n/2, so that the average energy of a single particle is 1. This surface has finite surface area, so we can put a uniform probability distribution on it, and ask what the distribution of the first particle's velocity is.

Is said distribution the Maxwell speed distribution, in the limit as n->infinity?

In other words, is the Maxwell speed distribution just the distribution for the velocity of a particle found in a system chosen uniformly over all systems of the same energy E?

Thanks in advance!
PhysOrg.com
PhysOrg
physics news on PhysOrg.com

>> Study provides better understanding of water's freezing behavior at nanoscale
>> Soft matter offers new ways to study how ordered materials arrange themselves
>> Making quantum encryption practical
Nov16-12, 08:15 AM   #2
mfb
 
Mentor
The usual derivation assumes that the particles are in contact with some external reservoir and that the total energy can vary a bit. In the limit of infinite particles, I would expect that an exact energy gives the correct result, too.
New Reply

Tags
distribution, maxwell, speed
Thread Tools


Similar Threads for: Maxwell speed distribution
Thread Forum Replies
Maxwell speed distribution Advanced Physics Homework 2
Maxwell Speed Distribution Advanced Physics Homework 11
The Maxwell Speed Distribution in 2D Advanced Physics Homework 2
maxwell's speed distribution law Advanced Physics Homework 4
energy distribution and Maxwell speed distribution Advanced Physics Homework 5