File:Laser reflector generator at Kings Cross St Pancras.jpg

Uploaded by Salimfadhley
Upload date 2005-03-23T13:54:28Z
MIME type image/jpeg
Dimensions 1024 × 768 px
File size 147.2 KB
Description
English: A laser reflector generator found on the en:Victoria Line platform at en:Kings Cross St Pancras tube station on the London Underground, used to determine whether or not the major reconstruction work at sub-surface level is causing the ground to shift and the tunnels to become distorted. The orange area is actually a lens through which can be seen a number of mirrors, rather like a barcode scanner.
Date Taken on 4 March 2005
Source
  • Photograph: Own work
  • Identification: [1]
Author User:Salimfadhley
Permission
(Reusing this file)
GNU head Permission 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.
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Captions

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inception

4 March 2005

exposure time

0.016666666666667 second

focal length

5.8 millimetre

media type

image/jpeg