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Summary
DescriptionSumburgh Lighthouse Lamp.jpg
English: A 85mm Chance Brothers Incandescent Petroleum Vapour Installation which produced the light for the Sumburgh Head lighthouse until 1976. The lamp (made in approx. 1914) burned vaporized kerosene (paraffin); the vaporizer was heated by a denatured alcohol (methylated spirit) burner to light. When lit some of the vaporised fuel was diverted to a Bunsen burner to keep the vaporizer warm and the fuel in vapor form. The fuel was forced up to the lamp by air; the keepers had to pump the air container up every hour or so. This in turn pressurized the paraffin container to force the fuel to the lamp. The "white sock" is in fact an unburnt mantle on which the vapor burned.
Date
Source
Own work
Author
Etan J. Tal
Information provided by B.J. (retired lighthouse technician) and A.H. (sumburghhead.com)
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Creative Commons Attribution-ShareAlike 4.0 International
GNU Free Documentation License, version 1.2 or later
source of file
original creation by uploader
inception
14 September 2016
exposure time
0.03333333333333333333 second
f-number
1.8
focal length
8.8 millimetre
ISO speed
160
instance of
photograph
MIME type
image/jpeg
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22:26, 23 September 2016
2,310 × 4,132 (5.23 MB)
Etan J. Tal
{{Information |Description ={{en|1=A 85mm Chance Brothers petroleum vapor lamp which produced the light for the Sumburgh Headlighthouse until 1976. The lamp burned paraffin (kerosene) and a vaporiser was heated by a meth burner to ligh...
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