File:Three xenon flashtubes and a krypton arc lamp.jpg
Original file (2,832 × 1,458 pixels, file size: 961 KB, MIME type: image/jpeg)
Captions
This image has currency in it to indicate scale.
Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted. Ideally, a photograph should include a ruler with the subject (example) or an added scale marking. SI ("metric") units are the most commonly used worldwide (see meter and centimeter). Images with coins to indicate scaleCommon coin diameters for reference:
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Summary
[edit]DescriptionThree xenon flashtubes and a krypton arc lamp.jpg |
English: The first three from the top are xenon flashtubes. The bottom one is a krypton arc lamp, which has a smaller diameter, higher pressure, thinner glass (for better cooling), and a cathode with a sharp tip. The anodes are on the right hand side, and the cathodes are on the left. The second flashtube is designed for water cooling, and portions of the glass can be seen that have been shrunken around the electrodes (also for cooling). This flashtube shows signs of sputter around its cathode, appearing as dark deposits of metal on the glass. A penny is shown for size. |
Date | (UTC) |
Source | Own work |
Author | Zaereth (talk) |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work has been released into the public domain by its author, Zaereth. This applies worldwide. In some countries this may not be legally possible; if so: |
Original upload log
[edit]Transferred from en.wikipedia to Commons using For the Common Good.
Date/Time | Dimensions | User | Comment |
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18:03, 14 September 2009 | 2,832 × 1,458 (984,366 bytes) | w:en:Zaereth (talk | contribs) | ({{Information |Description = The first three from the top are xenon flashtubes. The bottom one is a krypton arc lamp, which has a smaller diameter and a cathode with a sharp tip. The anodes are on the right hand side, and the second flashtube shows si) |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:04, 3 May 2013 | 2,832 × 1,458 (961 KB) | Vahram Mekhitarian (talk | contribs) | Transferred from en.wikipedia: see original upload log above |
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File usage on Commons
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- File:Three xrenon flashtubes and a krypton arc lamp.JPG (file redirect)
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon PowerShot A470 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/3 |
ISO speed rating | 200 |
Date and time of data generation | 08:31, 13 September 2009 |
Lens focal length | 6.3 mm |
File change date and time | 08:31, 13 September 2009 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 08:31, 13 September 2009 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 3.15625 |
APEX exposure bias | 0 |
Maximum land aperture | 3.15625 APEX (f/2.99) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 13,714.285714286 |
Focal plane Y resolution | 13,714.285714286 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |