File:1 o'clock gun map (5354511937).png

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1_o'clock_gun_map_(5354511937).png (588 × 588 pixels, file size: 621 KB, MIME type: image/png)

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today was the 150th anniversary of the <a href="http://en.wikipedia.org/wiki/Edinburgh_Castle#One_O.27Clock_Gun" rel="nofollow">One O'Clock Gun</a> at Edinburgh Castle.

This was inspired by the original <a href="http://www.edinphoto.org.uk/1_map_2/1_map_edinburgh_1861_time-gun_-_whole_map.htm#map" rel="nofollow">One o'clock gun map</a> which shows how long the sound takes to reach different parts of the city.

Each circle represents 1 second. It's surprising how slow sound travels when you look at the scale of a city - it takes about 10 seconds for the sound wave to reach Leith.

Map via <a href="http://www.openstreetmap.org/" rel="nofollow">OpenStreetMap</a>

This is a screencap, there is a real-time animated version <a href="http://www.openprocessing.org/visuals/?visualID=14097" rel="nofollow">here on OpenProcessing</a> (requires Java)
Date
Source 1 o'clock gun map
Author Steven Kay from Edinburgh, United Kingdom
Camera location55° 56′ 55.47″ N, 3° 11′ 59.7″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This image was originally posted to Flickr by stevefaeembra at https://flickr.com/photos/14023865@N06/5354511937. It was reviewed on 13 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

13 December 2020

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Date/TimeThumbnailDimensionsUserComment
current17:58, 13 December 2020Thumbnail for version as of 17:58, 13 December 2020588 × 588 (621 KB)Eyes Roger (talk | contribs)Transferred from Flickr via #flickr2commons

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