Talk:Meridian (geography)

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what are lines of latitude called?[edit]

Anyone ever think of including the term for a line of latitude here? —Preceding unsigned comment added by (talk) 15:28, 20 September 2007 (UTC)

parallels, methink (talk) 14:42, 23 March 2008 (UTC)

meridian circles. GrzegorzWu (talk) 09:50, 25 March 2008 (UTC)

Circles of latitude or, perhaps more commonly, parallels. Backspace (talk) 09:08, 4 February 2009 (UTC)

What does your GPS navigator say?[edit]

During my visit to Greenwich on the 3rd of May 2008 I took my GPS navigator (MIO 268, SW 3.2) and hoped to see the coordinate being exactly zero for longitude. I was surprised to see around 0.00147 degrees West, which I roughly calculated into approximately 150m (!) offset. The navigator had a good satellite reception and indicated a 1.6m accuracy. Also the altitude had quite an offset compared to the plaque on the observatory, but I did not make a note of that unfortunately.

How is it possible that the navigator has this enourmous offset and how is it possible that it works fine on the road, on which I believe it is closer to the 1.6m offset than the 150m offset. Does anyone have the same or other experiences? (Marc van Beek, The Netherlands) —Preceding unsigned comment added by (talk) 09:42, 5 May 2008 (UTC)

Marc, your GPS navigator was not at fault. Traditional, or historic, longitude and latitude differ from the longitude and latitude used by GPS systems (see the IERS Reference Meridian section of the Prime Meridian article for an explanation why). --Blake the bookbinder (talk) 05:59, 26 July 2008 (UTC)
No your GPS was not at fault. The adoption of WGS84 moved the meridian east of its current location. This does not appear to be documented anywhere in the Greenwich observatory complex (but I'm wiling to be proven wrong). (talk) 14:45, 29 October 2011 (UTC)
March, your GPS navigator is right. The accepted meridian is now 200 m east of the conventional and symbolic Prime Meridian. Refer to: (talk) 15:37, 28 August 2013 (UTC)


what is true meridian —Preceding unsigned comment added by EverGreg (talkcontribs) 20:11, 12 January 2009 (UTC)

Meridian naming[edit]

Several meridian articles have been renamed around 14/15 April.

HTML2011 (talk) 03:38, 17 April 2012 (UTC)

All of these seem to be in accordance with Wikipedia guidelines on capitalisation MOS:CAPS, WP:TITLE, WP:CAPS. This is a matter of house style so the usage in sources in not very relevant: they will be following there own style. SpinningSpark 08:00, 17 April 2012 (UTC)
They had one style and were changed. Some by pointing to dubious Ngrams, then latter other by pointing to books from 1914, while at least one Ngram shows that over time upper case is favored. If less emphasis is put on sources as you say and I agree with, then please, can you tell what is the basis for the moves? Where can one deduct from, that Greenwich Meridian in violating Wikipedia guidelines while Greenwich meridian not? HTML2011 (talk) 17:52, 17 April 2012 (UTC)
I linked you the relevant guidelines above. Did you not look? Extract:
Convention: For page titles, always use lowercase after the first word, and do not capitalize second and subsequent words, unless the title is a proper noun. For multiword page titles, one should leave the second and subsequent words in lowercase unless the title phrase is a proper noun that would always occur capitalized, even in the middle of a sentence.
SpinningSpark 23:35, 17 April 2012 (UTC)

I did look, but this section is not relevant if one wants to know why the titles were changed to lower case. It says "unless the title is a proper noun". Salt Lake Meridian is a proper noun, so should be capitalized. This is analogous to Rocky Mountains which are not named Rocky mountains in Wikipedia. Also the articles are named South Pole, Southern Hemisphere, New York City, Liard River, Brooks Range and not South pole, Southern hemisphere, New York city, Liard river, Brooks range. The massive renaming by one user brought the meridians out of line with Wikipedia house style. HTML2011 (talk) 21:12, 18 April 2012 (UTC)

BTW, nothing dubious about the page moves. The pages moves definitely occurred. You may disagree with the reasons for the moves, but please refrain from casting the actions of editors your disagree with as "dubious" and assume good faith instead. -- JHunterJ (talk) 21:36, 18 April 2012 (UTC)
Dubious page moves is meant as short for dubious reasons for page moves. Of course I assume the users in questions did it in good faith. HTML2011 (talk) 21:58, 18 April 2012 (UTC)
The reasons are also not dubious, but stated explicitly. -- JHunterJ (talk) 22:00, 18 April 2012 (UTC)
Dubious#Philosophy - it looks dubious to me whether the reasons are valid. "Questionable page moves" might be less objectionable to you? Anyway, could you add an anchor below the section heading, I would like to rename it to "Meridian naming" or so without breaking links, but I don't know how to add anchors. HTML2011 (talk) 22:08, 18 April 2012 (UTC)
You should write {{anchor|Dubious page moves}} SpinningSpark 00:38, 19 April 2012 (UTC)
Thanks a lot! HTML2011 (talk) 00:42, 19 April 2012 (UTC)
I don't think your examples are exactly helping your case. "North Pole" and "New York City" are always capitalised. "Salt Lake Meridian" on the other hand, is not always capitalised. Counter-examples are easy to find: on the first page of gbooks results 8 out of 10 do not capitalise "meridian". SpinningSpark 00:51, 19 April 2012 (UTC)
Your link is great, it shows that the lower casing is almost restricted to pre-1900 literature. We are now in 2012. Also I trust logic more, than gbook digging. Around 1900 there are also many occurrences of "New Yor city". HTML2011 (talk) 01:57, 19 April 2012 (UTC)
Hmm...I am much less confident now that you have pointed out the split by date. The ngram shows that uncapitalised "meridian" was in the ascendency as late as 1974; this does seem to be very much a case of fluctuating styles. But style variation is the very thing the MOS is meant to smooth out. We are supposed to follow the MOS for house style even when the majority of outside publications would do otherwise. On the question of logic, I would say there is a logical difference. "New York City" is a proper noun because it is the generally recognised name of the settlement. "Salt Lake Meridian" is different, it is a meridian at Salt Lake so "Salt Lake meridian" makes equal sense. This is different from "South Pole", a pole at (the) South does not really make sense. One would have to say "a pole at the South Pole" which is unhelpfully redundant. Still, let's here from Dicklyon who executed the moves but, so far, has not taken part here. SpinningSpark 08:46, 19 April 2012 (UTC)
He might be watching this page. but he has responded at one of HTML201's forks of this discussion: Wikipedia talk:Manual of Style/Capital letters#Meridian. -- JHunterJ (talk) 11:34, 19 April 2012 (UTC)
Well that's succesfully broken up the conversation. We should be trying to centralise this discussion. Not spread it all over the wiki. A simple link on pages interested in the central discussion would suffice. So let's say that this discussion is now closed and moved to the MOS page. SpinningSpark 17:35, 19 April 2012 (UTC) and 17:45, 19 April 2012 (UTC)
Dicklyon did mention MOS:CAPS in at least one move summary and had mentioned the meridians at Wikipedia_talk:Manual_of_Style/Capital_letters#Exceptions.3F. I am also not happy with two conversations. But I think MOS:CAPS might be a better place since some disagreement stems from Ngram book counting, which I regard as problematic. HTML2011 (talk) 04:36, 20 April 2012 (UTC)
Also, thank you for renaming the section. -- JHunterJ (talk) 14:06, 19 April 2012 (UTC)
My pleasure. Thanks to you for pointing out the naming was, ehm let's say, not so good. HTML2011 (talk) 04:30, 20 April 2012 (UTC)