File:Pieler safety lamp.jpg
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Summary
[edit]DescriptionPieler safety lamp.jpg |
Deutsch: Replika einer Pielerlampe. Die Pielerlampe wurde zur genauen Bestimmung der Schlagwetterkonzentration in Steinkohlenbergwerken verwendet. Durch verwendeten Brennspiritus wird die Flamme erst bei Anwesenheit von Methan sichtbar und zudem ist die Methankonzentration exakter als mit einer Benzinwetterlampe bestimmbar.
English: Replica of a Pieler lamp, a derivative of the Davy lamp. The Pieler lamp was used to measure fire damp (methane) concentration in coal mines. By using ethanol as a fuel, the flame only becomes visible in the presence of methane, and moreover, determines the concentration more accurately than a gasoline-fueled lamp. The calibrated apertures on the side are for gaging flame height.
Polski: Replika spirytusowej lampy górniczej Pielera (rodzaj paliwa odróżnia ją od podobnej w konstrukcji benzynowej lampy Davy'ego) ze skalą w postaci poziomych wąskich otworów w osłonie, wyskalowanych (kolejno od dołu) liczbami: ¼ - ½ - ¾ - 1 - 1¼ - 1½ |
Date | |
Source | Own work |
Author | Julo |
Licensing
[edit]Public domainPublic domainfalsefalse |
This work has been released into the public domain by its author, Julo. This applies worldwide. In some countries this may not be legally possible; if so: |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:07, 18 December 2009 | 520 × 1,600 (411 KB) | Julo (talk | contribs) | sharper and better | |
12:50, 17 December 2009 | 872 × 1,880 (248 KB) | Julo (talk | contribs) | {{Information |Description={{en|1=en:Davy lamp (safety lamp for use in coal mines)}} {{pl|1=Benzynowa lampa górnicza Davy'ego ze skalą w postaci poziomych wąskich otworów w osłonie, wyskalowanych (od dołu) liczbami: ¼ |
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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 | Nokia |
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Camera model | 6210 Navig |
Exposure time | 1/250 sec (0.004) |
F-number | f/2.8 |
ISO speed rating | 74 |
Date and time of data generation | 11:59, 18 December 2009 |
Lens focal length | 3.7 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 11:59, 18 December 2009 |
Meaning of each component |
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APEX shutter speed | 7.965 |
APEX aperture | 2.97 |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |