Talk:Sodium-vapor lamp

message: The LPS lamps mostly put out a doublet - TWO lineS 589.0 and 589.56nm - not a line.  The graph shows only one line - it is sort of wrong.
Should say sodium D-lines - There are better spectral graphs showing both lines..   — Preceding unsigned comment added by 108.243.106.82 (talk) 23:16, 3 January 2021 (UTC)
thread_title:  Line vs Lines 

message: It was moved to "Sodium vapour lamp" earlier today for no reason.  Dbenbenn 16:24, 21 Dec 2004 (UTC)
thread_title: Moved

message: I included the LPS abbreviation as well as there was no mention of it. Google: "LPS sodium lamp" gives 4750 hits, "SOX sodium lamp" gives 812. (apart from this, i dont know which one is more popular or if one term is being phased out) || deanos 11:24, Nov 16, 2004 (UTC)
I've stated that the near-monochromatic yellow light is actually two wavelengths very close together.  There are other doublets of different colours as well, but much fainter.  I've rewritten the bit that previously referred to Colour Rendering (which is about light sources, not objects). JohnG62 21:02, 13 October 2007 (UTC)
thread_title: LPS/SOX

message: :If the sky is clear, the light is simply irradiated around, causing large enough cities to actually glow with an orange light!
If you've approached a large enough city, usually with 1 million people inside or more, in a clear night, chances are that, when you're about 50 km away, you could see a dim, dome-shaped orange glow where the city is; this is particularly noticeable with cities that grow out instead of growing up like Guadalajara. Da_Nuke 05:55, 19 January 2006 (UTC)
thread_title:  Small data additions 

message: I removed this sentence
:"In Germany HPS lamps are not allowed for use on roads. New Australian roadway lighting criteria requires HPS lamp lumens be reduced by .75 for roadway lighting designs."
only because it needs to be fixed. Why are HPS lamps not allowed in Germany? In Australia, HPS lamp lumens must be reduced to 75% of what? and why? Is it 75% or 0.75 lumens? PAR 14:12, 19 January 2006 (UTC)
thread_title:  Text temporarily removed 

message: It is common to come across acronyms like SON-E and SON-T. I have also seen NES-E, NAV-E, NAV-T. I am new to this fascinating business of luminaires, and only know that E=elliptical and T=tubular (basically the shape of the luminaires, per se). Does anybody has a clue what SON stands for?
:I suspect SOdium or Sodium Oxide something...
::I would think it would be "Sodium Nitride", but that is a newly discovered compound from what I see. "Sodium Oxide Nitride" I could not find anything on. "Sodium Nickel" seems to be more involved with batteries, but since the nickel is used to make electrodes, (http://en.wikipedia.org/wiki/Molten_salt_battery) then maybe that is what it has to do with. Eric B 15:42, 27 March 2007 (UTC)
replies: text:  OK, I decided to ask this question at Candlepower Forums http://www.candlepowerforums.com/vb/showthread.php?t=156978 (where I first asked about the White Son was was taold about it), and I was told that SOX does not even stand for Sodium OXide, so the article is wrong on that point. The person didn;t know what SON stood for either, but pointed out it was apart of a naming system introduced with the first two-piece low pressure sodium lamps in 1932 (SO or SO/H). the first One piece in 1955 was then SOI. SL and SLI was the linear lamps. He linked to http://lamptech.co.uk as his source of information; but I haven't found these specific details there yet.Eric B 16:57, 14 April 2007 (UTC)

text: I came to ask the same thing, my guess is Sodium Oxide-Neon. Yes: SON-E is elliptical (bulbous), and SON-T is tubular. Interesting photos here --Belg4mit 19:43, 30 April 2007 (UTC)
thread_title:  SON: SON-E, SON-T 

message: : Finally re-added :) QuodErit (talk) 21:44, 9 January 2023 (UTC)
thread_title:  Image persistently removed 

message: Dicklyon just removed the image I added to this page months ago, claiming it was a "tinted sillhouette". Actually, the photo is a color photo taken under sodium vapor illumination and the fact that it shows up as a tinted sillhouette illustrates how NA vapor lamps generate essentially monochromatic views. I think the image should be restored. What do other people think? Debivort 02:38, 21 January 2007 (UTC)
replies: text: I took it out because there's nothing in the picture that would be expected show a color difference in broad-spectrum light, and hence it fails to make the claimed point. Dicklyon 04:19, 21 January 2007 (UTC)
replies: text:  The background would have been multicolored (brick and cement and grass) but I suppose, since you'd have to take my word for that, the image is less than ideal. Debivort 06:56, 21 January 2007 (UTC)
replies: text:  Exactly.  What I belive is irrelevant; if there's nothing visible in the background, the image fails to make its point.  And the branches in the foreground are a complete distraction from the point, since they're unlighted. Dicklyon 07:33, 21 January 2007 (UTC)
replies: text:  Of course, the image does illustrate a monochromatic view (regardless of whether the monochromaticity is due to the lamp or not) and it could be argued that without a replacement image, all you've done is reduce the total information on the page. Are you intending to find a replacement, or should I be on the look out for a better shot? Debivort 09:13, 21 January 2007 (UTC)
thread_title:  removal of image 

message: It would be great to have an areal photo showing a suburb lit by sodium-vapor lamps. —Ben FrantzDale (talk) 17:37, 27 January 2008 (UTC)
replies: text: Perhaps, but I think an aerial photo would be better than either an Ariel photo or an ariel photo, though it would probably still be an areal photo. This Commons category probably has a good one. – PointyOintment ❬💬•⌨❭  10:46, 25 November 2019 (UTC)
thread_title:  Ariel Photo 

message: fixed a degree kelvin reference.
no degree symbol is necessary for K  —Preceding unsigned comment added by 86.44.86.244 (talk) 20:02, 7 July 2008 (UTC)
thread_title:  Kelvin 

message: I'd hate to tell you how long i believed that Lucalox lamps incorporated a sensor and control circuit that, late in life, detected some run-away condition like overheating, and shut them down to recuperate for an appropriate time, thereby providing a higher average-lifetime-total of hours of illumination compared to, say, dusk-to-dawn operation! I'll go away quietly, but is this a private myth, or is there a verifiable and notable public one that we should consider acknowledging (tho debunking) in the article? --Jerzy•t 04:17, 7 August 2008 (UTC)
thread_title:  Myth re cycling  

message: According to , low pressure sodium SOX lamps have a layer of metal oxide semiconductor film to reflect IR, so SOX lamps do contain some oxygen. Totsugeki (talk) 11:55, 14 January 2010 (UTC)
thread_title:  Oxygen 

message: The paragraph has good (unsourced) information, but does it belong in this article? I moved it here for the time being. Totsugeki (talk) 17:31, 14 January 2010 (UTC)
thread_title:  Paragraph on Scotopic Lighting Calculations 

message: The page currently says: "Because the lamp effectively extinguishes at each zero-current point in the AC cycle, the inductive ballast assists in the reignition by providing a voltage spike at the zero-current point." This is simply false: the ballast only causes a phase shift in the current -- it still passes zero as usual. Maybe someone misunderstood this for the voltage spikes used to actually start the lamp.
--83.163.191.125 (talk) 09:20, 13 March 2011 (UTC)
thread_title:  On ballasts 

message: What variety of English is this article going to use? There is a mixture now. I don't see any reason that one variety is more appropriate for the topic so let's just decide and fix it. Is there any reason not to use British English? Jojalozzo 15:23, 9 December 2011 (UTC)
replies: text: See the title? Vapor, not vapour.  Leave out the extra U's. American English. --Wtshymanski (talk) 15:27, 9 December 2011 (UTC)
replies: text:  I see! Thanks! Jojalozzo 16:23, 9 December 2011 (UTC)
thread_title:  British English? 

message: Why not to give number to explain what is low pressure and high pressure?  — Preceding unsigned comment added by 77.193.106.208 (talk) 17:20, 26 August 2015 (UTC)
thread_title: Low pression & high pression

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*Added archive https://web.archive.org/web/20120515210409/http://www.sanjoseca.gov/clerk/cp_manual/CPM_4_3.pdf to http://www.sanjoseca.gov/clerk/cp_manual/CPM_4_3.pdf
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thread_title:  External links modified 

message: There's no history!!! Why? If I were an engineer looking for info on how these things worked, great article. But as a general reader, who seems to recall that these became ubiquitous starting in the 1990s, replacing earlier lamps that had a blue-purple glow, the article leaves me high and dry. When did these first appear? When did they start to push out the earlier street lamps? If anyone has information, please add a brief history section. Important question: why did they replace the earlier lamps? Theonemacduff (talk) 17:46, 18 September 2019 (UTC)
thread_title:  History 

message: I've read this article and noticed the statement that claims Philips was the last manufacturer of Low Pressure Sodium/SOX lamps. This might be untrue and could be reworded. I have found the website for Qianshun Lighting, A Chinese company that claims to still manufacture SOX lamps and offers them for sale. If it can be confirmed these are truly new lamps and not New Old Stock they sell, then a mention should be in the article that QS are the last manufacturer of SOX. Here is a link to their website for anyone wanting to investigate. https://www.qianshunlighting.com/
Slender (talk) 17:43, 21 October 2023 (UTC)
thread_title:  Philips was not the last producer of LPS lamps.