File:SpectresSolaires-DVD.jpg
Original file (2,048 × 1,536 pixels, file size: 408 KB, MIME type: image/jpeg)
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Summary
editDescriptionSpectresSolaires-DVD.jpg |
English: Solar spectrum with Fraunofer lines (picture of a slit through a DVD slice with a Canon A70)
Français : Spectre solaire montrant des raies de Fraunhofer (photo d'une fente vue à travers une tranche de DVD avec un Canon A70) |
Date | |
Source | Own work |
Author | Xofc |
The slit is made with a cutter in a cardboard which is placed at the end of a (cardboard) 'poster' tube. At the other end, the grating is a slice of DVD (DVD is a sandwich; the aluminium is removed in a solution of Na2CO3 (sodium carbonate) with a tilt of about 40°.
Licensing
editPermission 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.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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- to share – to copy, distribute and transmit the work
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- Under the following conditions:
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:49, 7 February 2011 | 2,048 × 1,536 (408 KB) | Xofc (talk | contribs) | {{Information |Description ={{en|1=Solar spectrum with Fraunofer lines (picture of a slit through a DVD slice with a Canon A70)}} {{fr|1=Spectre solaire montrant des raies de Fraunhofer (photo d'une fente vue à travers une tranche de DVD avec un Canon |
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Metadata
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Camera manufacturer | Canon |
---|---|
Camera model | Canon PowerShot A70 |
Exposure time | 1/40 sec (0.025) |
F-number | f/8 |
Date and time of data generation | 10:50, 7 February 2011 |
Lens focal length | 16.21875 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 11:32, 7 February 2011 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 10:50, 7 February 2011 |
Image compression mode | 3 |
APEX shutter speed | 5.3125 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 4.53125 APEX (f/4.81) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Focal plane X resolution | 9,846.1538461538 |
Focal plane Y resolution | 9,846.1538461538 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |