File:Two black light lamps.jpg
Original file (2,457 × 1,353 pixels, file size: 739 KB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionTwo black light lamps.jpg |
English: Two "black light" ultraviolet fluorescent lamps. The top one is an F15T8/BLB 18 inch 15 watt black light tube in a standard plugin fluorescent fixture. This is often used for special lighting effects, such as illuminating fluorescent posters. The bottom one is an F8T5/BLB 11 inch 8 watt tube in a portable black light, with a solid state ballast, run by eight AA size batteries. It is sold as a pet urine detector, to make urine stains on carpet and furniture visible by its fluorescence. Both radiate "long-wave" or UVA ultraviolet radiation, with a wavelength in the range 350 to 370 nm. The purple glow of the tubes is not the ultraviolet light itself, which is invisible, but visible purple light from mercury's 404 nm spectral line which leaks through the dark blue filter coating on the glass tube. This purple color is not quite accurately represented in this photo, due to differences between the color response of the camera sensor and the human eye. |
Date | |
Source | Own work |
Author | Chetvorno |
Licensing
[edit]This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 18:22, 29 October 2011 | 2,457 × 1,353 (739 KB) | Chetvorno (talk | contribs) |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on ba.wikipedia.org
- Usage on cv.wikipedia.org
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on eu.wikipedia.org
- Usage on frr.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on fr.wikibooks.org
- Usage on ht.wikipedia.org
- Usage on it.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on ka.wikipedia.org
- Usage on kn.wikipedia.org
- Usage on pt.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on tyv.wikipedia.org
- Usage on xmf.wikipedia.org
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 | FUJIFILM |
---|---|
Camera model | FinePix E550 |
Exposure time | 1/58 sec (0.017241379310345) |
F-number | f/2.8 |
ISO speed rating | 200 |
Date and time of data generation | 23:14, 28 October 2011 |
Lens focal length | 7.2 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.6.11 |
File change date and time | 00:29, 29 October 2011 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 23:14, 28 October 2011 |
Meaning of each component |
|
Image compression mode | 2 |
APEX shutter speed | 5.9 |
APEX aperture | 3 |
APEX brightness | 3.07 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 5,292 |
Focal plane Y resolution | 5,292 |
Focal plane resolution unit | 3 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Sharpness | Normal |
Subject distance range | Unknown |