File:Points changing lever.(Railways). (36435042890).jpg
Original file (2,286 × 1,536 pixels, file size: 2.52 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionPoints changing lever.(Railways). (36435042890).jpg | A mechanism is provided to move the points from one position to the other (change the points). Historically, this would require a lever to be moved by a human operator, and some switches are still controlled this way. However, most are now operated by a remotely controlled electric motor or by pneumatic or hydraulic actuation, called a point machine. This both allows for remote control and for stiffer, strong switches that would be too difficult to move by hand, yet allow for higher speeds |
Date | |
Source | Points changing lever.(Railways). |
Author | Bernard Spragg. NZ from Christchurch, New Zealand |
Camera location | 43° 55′ 23.84″ S, 171° 42′ 27.27″ E | View this and other nearby images on: OpenStreetMap | -43.923290; 171.707575 |
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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 |
This image was originally posted to Flickr by Bernard Spragg at https://flickr.com/photos/88123769@N02/36435042890. It was reviewed on 13 May 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
13 May 2020
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:10, 22 January 2018 | 2,286 × 1,536 (2.52 MB) | Artix Kreiger 2 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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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.
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Camera manufacturer | SONY |
Camera model | DSLR-A300 |
Exposure time | 1/125 sec (0.008) |
F-number | f/5.6 |
ISO speed rating | 200 |
Date and time of data generation | 08:35, 28 February 2010 |
Lens focal length | 230 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 10:53, 7 May 2013 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 08:35, 28 February 2010 |
Meaning of each component |
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APEX brightness | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 4.9708536585366 APEX (f/5.6) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
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 |
Focal length in 35 mm film | 345 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Image compression mode | 8 |
Supported Flashpix version | 1 |
Image width | 2,286 px |
Image height | 1,536 px |
Date metadata was last modified | 22:53, 7 May 2013 |
IIM version | 2 |