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Summary
| Description |
English: Intensity corrected version of this image: Image:Spectrum of blue flame.png taken on same hardware setup but using the irradiance mode of the spectrometer where the nonlinear response of the detector to the intensity of light falling on it is corrected for. The region below ~420nm is very noisy due to the lack of light at those wavelengths in the tungsten halogen lamp which is used for intensity calibration, all information below 375nm is too noisy to be useful. Spectrum taken by me using an Ocean Optics HR2000 spectrometer [1]. The flame of the torch was placed adjacent to the fiberoptic input port of the spectrometer so that attenuation of the shorter wavelengths by the fiber could be avoided. This may have introduced a slight "smearing" of the spectrum due to the lack of collimation of light entering the spectrometer but in comparing this spectrum to one taken through the fiber there is very little if any difference between the two. The data from the spectrometer used to create this image is in CSV format on the talk page. |
| Date | 31 October 2006 (original upload date) |
| Source | Transferred from en.wikipedia to Commons. |
| Author | Deglr6328 at English Wikipedia |
Licensing
Deglr6328 at English Wikipedia, the copyright holder of this work, hereby publishes it under the following licenses:
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Permission is granted 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. A copy of the license is included in the section entitled GNU Free Documentation License. |
  
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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | |
| Attribution: Deglr6328 at English Wikipedia | ||
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| This licensing tag was added to this file as part of the GFDL licensing update. |
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Original upload log
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 2012-06-03 12:37 | 1500×1028× (185237 bytes) | Eli Rabett | Added labels as on the uncorrected version of this figure. It is important to show the CH band as stronger than the Swan bands, because they are bluest part of the flame, while the Swan bands are mostly blue-green |
| 2006-10-31 10:33 | 3500×2406× (266823 bytes) | Deglr6328 | Intensity corrected version of Image:Spectrum of blue flame.png taken on same hardware setup but using the irradiance mode of the spectrometer where the nonlinear response of the detector to the intensity of light falling on it is corrected for. The regio |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:52, 4 June 2016 | | 1,500 × 1,028 (181 KB) | OgreBot | (BOT): Reverting to most recent version before archival |
| 23:52, 4 June 2016 |  | 3,500 × 2,406 (261 KB) | OgreBot | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2006-10-31 10:33:25 by Deglr6328 | |
| 08:50, 15 April 2016 |  | 1,500 × 1,028 (181 KB) | Michał Sobkowski | Transferred from en.wikipedia |
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