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Museum Lamp

Museum Lamp

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This picture is of an exhibit at the “National Museum of Scotland”, in Edinburgh. The museum has a great science section in general but this was the only example of a low pressure sodium lamp. Although great to see it does look old and slightly abused, presumably having been incorrectly positioned with the sodium still in liquid phase.
On a brighter note many collectors on here have better museum quality lamps in their private collections. :-)

Newyear.jpg 60w_GEC_SLI.jpg museum_sox.jpg 90soxe.jpg

Light Information

Light Information

Manufacturer:PHILIPS
Lamp
Lamp Type:Low pressure sodium

File information

File information

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Filename:museum_sox.jpg
Album name:tuopeek / misc
Keywords:Lamps
File Size:254 KB
Date added:Nov 28, 2017
Dimensions:2448 x 2108 pixels
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Date Time:2017:11:27 20:15:08
DateTime Original:2017:11:27 13:48:19
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Focal length:4.15 mm
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URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-139761
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Nov 28, 2017 at 01:53 PM Author:
there may be some decent life in that sox yet,not quite the white end of life emitted material at the cathodes for total end of life and sodium although all over the arc tube has not totally collected in one place,lamps looks to be very late 1970,s/early 80,s.
tuopeek
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tuopeek 111967450636623837217 tuopeek1 77334065@N05/
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Nov 28, 2017 at 01:58 PM Author: tuopeek
I think your right with the age, I have a few of this type and vintage. I have had inner tubes crack with sodium around the electrodes at switch on but as you say with some care it should still work for quite a time.




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Nov 28, 2017 at 06:17 PM Author:
Ermm, don't you mean The National Museum of SCOTLAND.??




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Nov 28, 2017 at 06:22 PM Author:
I've just had a closer look at that poor SOX lamp, at some point in its life it has been horribly abused. We should form the R.S.P.C.L. (The Royal Society for Prevention of Cruelty to Lamps)




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Nov 28, 2017 at 06:32 PM Author:

there may be some decent life in that sox yet,not quite the white end of life emitted material at the cathodes for total end of life and sodium although all over the arc tube has not totally collected in one place,lamps looks to be very late 1970,s/early 80,s.


It looks the same type as this one that I have, which is 1973, although I think mine is faring slightly better..! It looks so wrong being displayed cap down, as well. I've seen this before with lighting exhibits in museums, the curators have no idea of what they have, sometimes.

We must visit this museum sometime soon.
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tuopeek 111967450636623837217 tuopeek1 77334065@N05/
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Nov 29, 2017 at 03:27 AM Author: tuopeek
"Ermm, don't you mean The National Museum of SCOTLAND.??"
Miss Cuddly you are absolutely correct, I'll get that sorted.
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Nov 29, 2017 at 01:28 PM Author: James
I am delighted to see that NMS Edinburgh has finally put some of its lamps on display! But weren't there any others more interesting than this? Some years ago I visited their storage rooms in the basement and they have a stunning collection of really historic lamps, problem though is that they don't really know what they have. For instance they have two MAF type medium pressure mercury lamps, as well as inheriting from GEC's research labs other gems like the very first MA mercury lamp of 1932, early prototypes of the first quartz mercury lamps etc.




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Nov 29, 2017 at 01:39 PM Author:
That's the trouble, museums often don't know what they have.
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tuopeek 111967450636623837217 tuopeek1 77334065@N05/
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Nov 29, 2017 at 03:02 PM Author: tuopeek
@james There was a selection of lamps but unfortunately none of MAF type. There was an early
low wattage mercury in a clear bulb, but I didn't take a picture of it. I got the feeling the lamps were in part of the "energy" section of the museum which was sponsored "Scottish Power" so I guess they may not have used the museum's collection. That said the energy section is good and has two nice plasma demonstrations.
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