File:MaxwellBoltzmann gases T0C.png
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[edit]Maxwell-Boltzmann distribution for different gases at T=0°C. Multi-language suitable. Created with gnuplot 4.4; source code below :
#set term postscript enhanced eps color "Helvetica" 24
set term png truecolor enhanced font "Helvetica,36" size 1024,1024
set out "mb_T0.png"
# physics constants (in SI)
k = 1.38e-23
NA= 6.022e23
u = 0.001 / NA
T0 = 273.15
# Maxwell-Boltzmann distribution (mass in atomic units u, v in SI)
p(v,m,T) = 4. *pi * v**2. * (m*u/(2.*pi*k*T))**1.5 * exp( -m * u * v**2. / (2.*k*T))
# Formatting
set samples 10000
set key Left reverse at graph 0.9, 0.75
set yrange [0:.0022]
set xtics 1000 nomirror offset 0,0.25
set ytics nomirror 0.5e-3
set format y ""; set label 10 "10^{-3}" at -400,1.e-3
set border 3
set grid
set xlabel "v (m/s)" offset 13.5,2
set ylabel "p(v) (s/m)" offset 1, 5
set style fill transparent solid 0.4
# Plot for different gases at zero Celsius
set xrange [0:3900]
set label 11 "T = 0 °C" at graph 0.35, 0.8
plot p(x,28,T0) t "N_{2} (m=28 u)" w filledcurve x1, \
p(x,4,T0) t "He (m=4 u)" w filledcurve x1, \
p(x,2,T0) t "H_{2} (m=2 u)" w filledcurve x1
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:23, 24 June 2013 | 1,024 × 1,024 (43 KB) | TDF (talk | contribs) | Fix: He instead of He2 | |
12:26, 23 June 2013 | 1,024 × 1,024 (44 KB) | TDF (talk | contribs) | Maxwell-Boltzmann distribution for different gases at T=0°C. Multi-language suitable. Created with gnuplot 4.4; source code below: <code> #set term postscript enhanced eps color "Helvetica" 24 set term png truecolor enhanced font "Helvetica,36" size ... |
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