File:Blackbody spectra.png
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Blackbody_spectra.png (730 × 572 pixels, file size: 87 KB, MIME type: image/png)
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Python codes
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import numpy as np, pylab as pl
Nfreq, NT = 2000, 6
Tstart, Tgap = 3000, 1000 # K
Tend = Tstart + (Tgap * NT)
T = np.arange(Tstart, Tend, Tgap)
f = np.arange(0, Nfreq)
nu = f*1e12 # Hz
c = 299792458. # m/s
h = 6.62606957e-34 # J/s
k = 1.3806488e-23 # J/K
e = np.zeros( (NT, Nfreq) )
B = np.zeros( (NT, Nfreq) )
for i in range(NT):
e[i,:] = np.exp((h*nu[:])/(k*T[i]))
B[i,:]=((2*h*nu[:]**3)/c**2)*(1/(e[i,:]-1))
pl.plot(f,B[i,:],label='%s K'%(T[i]))
pl.hold(True)
leg = pl.legend(loc='upper right', fancybox=True)
leg.get_frame().set_alpha(0.5)
pl.title('Blackbody radiation', fontsize=17)
pl.xlabel('Frequency [THz]', fontsize=17)
pl.ylabel('Intensity [$W m^{-2} sr^{-1} Hz^{-1}$]', fontsize=17)
pl.savefig('Blackbody_spectra.png', bbox_inches='tight', transparent=True)
pl.show()
Summary
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| Description |
English: Blackbody spectra for 6 different temperatures |
| Date | |
| Source |
Own work This plot was created with Matplotlib. |
| Author | Muhammad |
Licensing
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I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:01, 28 November 2013 | | 730 × 572 (87 KB) | Muhammad (talk | contribs) | {{self|cc-by-sa-3.0}} |
| 00:08, 22 December 2012 |  | 800 × 600 (62 KB) | Muhammad (talk | contribs) | User created page with UploadWizard |
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