File:Black body.svg
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Summary
| Description |
Català: Comparació entre les corbes de radiació espectral per a un cos negre segons la teoria de Planck i la teoria clàssica de Rayleigh-Jeans.
English: Black body spectral radiance curves for various temperatures after Planck, and comparison with the classical theory of Rayleigh-Jeans (in cgs units).
Italiano: Confronto fra le curve del corpo nero della teoria di Planck e della teoria classica di Rayleigh-Jeans. |
| Date | |
| Source | Own work |
| Author | Darth Kule |
| Other versions |
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| SVG development | |
| Source code |
set term svg
set termoption enhanced
set encoding utf8
set output 'Black_body.svg'
unset key
set tics nomirror out
set border 3
set xrange [0:6]
set yrange [0:15]
set ylabel "Spectral radiance (kW • sr⁻¹ • m⁻² • nm⁻¹)"
set xlabel "Wavelength (μm)"
set label "5000 K" at 0.45,13.1
set label "4000 K" at 0.6,4.55
set label "3000 K" at 0.8,1.4
set label "Classical theory (5000 K)" at 1.55,11
set grid lc rgb "light-blue"
# length unit is micrometre
c=3e14 # speed of light
h=6.626e-22 # Planck constant
k=1.38e-11 # Boltzmann constant
# Planck curves
p1(x)=1e-6*2*h*c**2/(x**5*(exp(h*c/(x*k*3000))-1))
p2(x)=1e-6*2*h*c**2/(x**5*(exp(h*c/(x*k*4000))-1))
p3(x)=1e-6*2*h*c**2/(x**5*(exp(h*c/(x*k*5000))-1))
p4(x)=1e-6*2*h*c**2/(x**5*(exp(h*c/(x*k*6000))-1))
# Rayleigh-Jeans curve
rj(x)=1e-6*2*c*k*5000/(x**4)
plot p1(x) lw 2, p2(x) lw 2, p3(x) lw 2, p4(x) lw 2
plot rj(x) lw 2 lc rgb "black"\
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Licensing
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
All translations
Translations added to this section should be free of copyright claims (either CC0 or public domain).
- black body ≅ black body (Q161424)
- black body
- black body radiation ≅ black-body radiation (Q900097)
- black body radiation
- ultraviolet ≅ ultraviolet radiation (Q11391)
- ultraviolet
- visible ≅ visible spectrum (Q76299)
- visible
- infrared ≅ infrared radiation (Q11388)
- infrared
- wavelength ≅ wavelength (Q41364)
- wavelength
- μm ≅ micrometre (Q175821)
- μm
- spectral radiance ≅ spectral radiant intensity in terms of wavelength (Q81072410)
- spectral radiance
- spectral radiance ≅ spectral radiant energy (Q80237041)
- spectral radiance
- kelvin ≅ kelvin (Q11579)
- kelvin
- μm, میکرومتر, µм, мкм, мкм, 微米, µm, μm, μm, µm, µm, µm
- K, К, K, K, K, K
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:48, 3 January 2024 | | 600 × 480 (20 KB) | wikimediacommons>Glrx | remove #text nodes after tspan elements // Editing SVG source code using c:User:Rillke/SVGedit.js |
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