Image:Erythemal action spectrum.svg
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Erythemal_action_spectrum.svg (SVG file, nominally 600 × 480 pixels, file size: 9 KB)
Licensing
I, the creator of this work, hereby grant the permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers. |
Source
Gnuplot script:
# data source: http://www.temis.nl/uvradiation/info/uvindex.html # solar spectrum: in Netherlands, noon, clear blue sky action(l) = (l<297) ? 1 : ((l<327) ? 0.0015**((l-297)/30) : 1.5e-3*(1.2e-4/1.5e-3)**((l-327)/73)) set xlab 'Wavelength (nm)' set ylab 'Irradiance (W/m2/nm)' set xra [280:390] set yra [8e-5:2] set log y set grid set data sty lines set nokey set lab 1 'Sunlight spectrum' at 340,0.4 set lab 2 'Erythemal action spectrum' at 320,0.01 set lab 3 'Effective spectrum' at 340,4e-4 right set term svg fsize 18 set out 'erythemal_spectrum.svg' pl \ 'sunNL.dat', \ action(x), \ 'sunNL.dat' usi 1:(action($1)*$2)
Datafile sunNL.dat:
295 1e-4 300 3e-3 305 3.1e-2 310 0.1 315 0.2 320 0.3 325 0.42 330 0.48 340 0.55 350 0.60 365 0.65
File history
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Date/Time | Dimensions | User | Comment | |
---|---|---|---|---|
current | 22:30, 10 July 2006 | 600×480 (9 KB) | Hankwang ( Talk | contribs) | (Reference: http://www.temis.nl/uvradiation/info/uvindex.html ) |
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Categories: Self-published work