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File:Souter Lighthouse lenses.jpg

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Summary

Description
English: A bi-form (i.e. duplicated) first-order Fresnel-lens optic, manufactured by Chance Brothers of Smethwick in 1914. Floating in a bath of mercury, it revolved around the lamps to produce a red flash once every five seconds.
Date
Source Own work
Author Barabbas1312

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Captions

The main optic (i.e. lenses) of Souter Lighthouse, a preserved lighthouse in the north-east of England.

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0.02 second

5.4 millimetre

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Date/TimeThumbnailDimensionsUserComment
current15:04, 5 November 2022Thumbnail for version as of 15:04, 5 November 20223,024 × 4,032 (3.03 MB)Barabbas1312Uploaded own work with UploadWizard

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