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File:3rd-order, Fresnel lens at Split Rock.jpg

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Description
English: 3rd-order, Fresnel lens at Split Rock Lighthouse.
Date Taken on 30 April 2002
Source Original Image taken from The Minnesota Historical Society's Split Rock Lighthouse page on Flickr
Author Minnesota Historical Society
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Items portrayed in this file

depicts

Split Rock Lighthouse

inception

30 April 2002

exposure time

0.002 second

focal length

6.8 millimetre

media type

image/jpeg

checksum

f4f94a868488a7ba70b1caea05a6aa3b6c103d9c

determination method or standard: SHA-1

data size

144,811 byte

height

1,000 pixel

width

750 pixel

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Date/TimeThumbnailDimensionsUserComment
current04:29, 15 June 2010Thumbnail for version as of 04:29, 15 June 2010750 × 1,000 (141 KB)Mnhs~commonswiki{{Information |Description={{en|1=3rd-order, Fresnel lens at Split Rock Lighthouse. *Collection of [http://www.mnhs.org/index.htm The Minnesota Historical Society]}} |Source=[http://www.flickr.com/photos/splitrocklighthouse/4701461202/ Original Image] tak

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