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General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
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8th Jan 2011, 8:06 pm | #1 |
Retired Dormant Member
Join Date: Dec 2003
Location: North London, UK.
Posts: 6,168
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Very old electrical appliances
This picture is taken from the IEE centenary edition of Electronics and Power, 1971. The article is about the history of the wiring regulations. The patterning effects are presumably due to my scanner interacting with the dot pattern in the printing.
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8th Jan 2011, 8:29 pm | #2 |
Dekatron
Join Date: Jul 2007
Location: Penrith, Cumbria, UK.
Posts: 3,687
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Re: Very old electrical appliances
Moire patterning by said interaction. It can be removed if your photo-editing software includes a 'blur' function. Patterning is hardly noticeable on your scan, though.
Interesting pics, and akin to some items in my 1920s 'Sunco' electrical catalogue.
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Regds, Russell W. B. G4YLI. |
8th Jan 2011, 8:45 pm | #3 |
Moderator
Join Date: Jun 2003
Location: Oxford, UK
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Re: Very old electrical appliances
You may get better results if you scan at a higher or lower resolution.
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15th Jan 2011, 1:35 pm | #4 |
Rest in Peace
Join Date: Jul 2006
Location: Somerset, UK.
Posts: 2,356
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Re: Very old electrical appliances
hats interesting.I have one of the pip top Bulbs, what ever they are from that space heater ! unfortunately i think its blown.
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