Talk:Longitude (book)

This article is within the scope of WikiProject Books. To participate in the project, please visit its page, where you can join the project and discuss matters related to book articles. To use this banner, please refer to the documentation. To improve this article, please refer to the relevant guideline for the type of work.BooksWikipedia:WikiProject BooksTemplate:WikiProject BooksBook articles

Transport: Maritime Low‑importance

	Transport portal This article is within the scope of WikiProject Transport, a collaborative effort to improve the coverage of articles related to Transport on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.TransportWikipedia:WikiProject TransportTemplate:WikiProject TransportTransport articles
Low	This article has been rated as Low-importance on the project's importance scale.
	This article is supported by the Maritime task force (assessed as Low-importance).

Geographical coordinates

Longitude (book) is of interest to WikiProject Geographical coordinates, which encourages the use of geographical coordinates in Wikipedia. If you would like to participate, please visit the project page, where you can join the project and see a list of open tasks.Geographical coordinatesWikipedia:WikiProject Geographical coordinatesTemplate:WikiProject Geographical coordinatesGeographical coordinates articles

Untitled[edit]

I do not know what is meant by this sentence:

"Determining latitude was hard for the sun's declination for the day.[2]"

Is it better to say "... due to the sun's declination..."?--Jrm2007 (talk) 21:00, 17 April 2010 (UTC)[reply]

That text was vandalised back in 2009 October. I have restored it so it now reads:

Determining latitude was relatively easy in that it could be found from the altitude of the sun at noon with the aid of a table giving the sun's declination for the day.

The footnote that follows also needs attention because it appears to make latitude measurement more difficult than it is. Latitude on land and sea has always been far easier than longitude. Thank you for the heads-up. -84user (talk) 11:08, 19 April 2010 (UTC)[reply]

Per above comment by 84user and being WP:BOLD, having seen the same problem with the follow on sentence, I deleted "However, since Polaris is not precisely at the pole, it can only provide accurate information if the precise time is known or many measurements are made over time, which made developing an accurate chronometer for long ocean voyages even more vital." It at the least would need a citation. It does not reflect the relative ease of latitude determination compared to longitude, which is a key point of this page. The position of the axis of rotation can be determined from three known stars. Consider determining latitude in the Southern hemisphere.... JamesCrook (talk) 10:04, 6 April 2022 (UTC)[reply]

External links modified[edit]

Hello fellow Wikipedians,

I have just added archive links to one external link on Longitude (book). Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:

Added archive https://web.archive.org/20090107210349/http://us.penguingroup.com:80/static/rguides/us/galileos_daughter.html to http://us.penguingroup.com/static/rguides/us/galileos_daughter.html

When you have finished reviewing my changes, please set the checked parameter below to true to let others know.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—^{cyberbot II}_{Talk to my owner:Online} 21:48, 25 January 2016 (UTC)[reply]

Scilly Isles disaster: Sobel's book is criticized[edit]

I looked at the Wikipedia article on the Scilly Isles naval disaster of 1707, which was a major impetus toward improvements in navigation. On one point, that article criticizes this book for reporting a story as simply factual, whereas (according to that article, which provides references) the story is a legend not grounded in fact. Perhaps the article on Sobel's book should mention this criticism. Oaklandguy (talk) 05:39, 27 September 2016 (UTC)[reply]