Wikipedia talk:WikiProject Measurement

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WikiProject Measurement (Rated Project-class)
WikiProject icon This page is within the scope of WikiProject Measurement, a collaborative effort to improve the coverage of Measurement 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.
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Article alerts[edit]

This is a notice to let you know about Article alerts, a fully-automated subscription-based news delivery system designed to notify WikiProjects and Taskforces when articles are entering Articles for deletion, Requests for comment, Peer review and other workflows (full list). The reports are updated on a daily basis, and provide brief summaries of what happened, with relevant links to discussion or results when possible. A certain degree of customization is available; WikiProjects and Taskforces can choose which workflows to include, have individual reports generated for each workflow, have deletion discussion transcluded on the reports, and so on. An example of a customized report can be found here.

If you are already subscribed to Article Alerts, it is now easier to report bugs and request new features. We are also in the process of implementing a "news system", which would let projects know about ongoing discussions on a wikipedia-wide level, and other things of interest. The developers also note that some subscribing WikiProjects and Taskforces use the display=none parameter, but forget to give a link to their alert page. Your alert page should be located at "Wikipedia:PROJECT-OR-TASKFORCE-HOMEPAGE/Article alerts". Questions and feedback should be left at Wikipedia talk:Article alerts.

Message sent by User:Addbot to all active wiki projects per request, Comments on the message and bot are welcome here.

Thanks. — Headbomb {ταλκκοντριβς – WP Physics} 09:23, 15 March, 2009 (UTC)

I need your help[edit]

Hi metrologists, I ask for your help. I am stalked by two Chemists that unfortunately have no clue about metrology. I try to make sure that articles are written in correct metrological terminology. Now they are planing to ban me again (see here User_talk:Kkmurray/1). I hope you guys can see that his article Kendrick mass is full of incorrect language (even though it is all taken from reviewed papers) and that my article Kendrick (unit) is better.

Here you find the whole story of the current argument: Talk:Kendrick_mass.

We had an argument before on which they achieved to have me banned for one year. I still think this ban was incorrect. The argument was about a physical quantity in mass spectrometry, the mass-to-charge ratio. Some in the chemistry branch of mass spectrometry use a "dimensionless" m/z and my claim is that a mass-to-charge ratio by definition cannot be dimensionless and therefore needs a unit and that a symbol m/Q would be more appropriate. I partly won the argument because my article Thomson (unit) is still alive.

The deeper issue on this new argument is that many chemists seem not able to make the difference between a quantity Q = n * unit, and the numerical factor n of a quantity. Please check yourself and I would really appreciate your support here Talk:Kendrick_mass. Kehrli (talk) 31 October 2010

Human height in the metric system[edit]

Just seeking a wider range of input from informed persons at Template_talk:Height#rfc_97AACED.--Gibson Flying V (talk) 12:11, 27 January 2014 (UTC)

And again at Template_talk:Infobox_NFL_player#Human_height_and_the_metric_system.--Gibson Flying V (talk) 21:03, 7 September 2014 (UTC)

Wrong category name?[edit]

Please express your opinion here. --Daniele Pugliesi (talk) 02:24, 9 June 2014 (UTC)

Comment on the WikiProject X proposal[edit]

Hello there! As you may already know, most WikiProjects here on Wikipedia struggle to stay active after they've been founded. I believe there is a lot of potential for WikiProjects to facilitate collaboration across subject areas, so I have submitted a grant proposal with the Wikimedia Foundation for the "WikiProject X" project. WikiProject X will study what makes WikiProjects succeed in retaining editors and then design a prototype WikiProject system that will recruit contributors to WikiProjects and help them run effectively. Please review the proposal here and leave feedback. If you have any questions, you can ask on the proposal page or leave a message on my talk page. Thank you for your time! (Also, sorry about the posting mistake earlier. If someone already moved my message to the talk page, feel free to remove this posting.) Harej (talk) 22:47, 1 October 2014 (UTC)

Expert attention[edit]

This is a notice about Category:Measurement articles needing expert attention, which might be of interest to your WikiProject. It will take a while before the category is populated. Iceblock (talk) 18:52, 11 December 2014 (UTC)

Rod as a volume[edit]

An edit (diff) claims that a rod can be a unit of volume equal to 1000 cubic feet. The source is:

Encyclopaedia of Scientific Units, Weights and Measures; Springer, 2003
Author: François Cardarelli
Sample chapter: Other Systems of Units

The sample chapter has a "UK Measures of Volume" table on page 14 of the pdf (page 33 of the book) which asserts that 1 rod = 1000 cubic feet. It is likely there is no other mention of the use of "rod" as a volume in the book. I have not seen this claim before and I'm inclined to think the source is not sufficiently reliable to introduce novel information. Any opinions? A complication is that the book seems to be used in about 50 articles (search). Johnuniq (talk) 10:05, 18 December 2014 (UTC)

  • The same book has been used as a source for Wrap (unit) (one of the 50), defining it as a measure of length which has been used in the UK, 240ft. The Oxford English Dictionary does have a measure of length as one sense of "wrap" - but at 3564 yards! Worrying. PamD 19:52, 18 December 2014 (UTC)

Category:Narrow streets[edit]

Category:Narrow streets, which is within the scope of this WikiProject, has been nominated for deletion. If you would like to participate in the discussion, you are invited to add your comments at the category's entry on the Categories for discussion page. Thank you.RevelationDirect (talk) 00:54, 20 December 2014 (UTC)

Astronomical units[edit]

A discussion is occurring at Talk:Astronomical unit about the unit symbol, standard abbreviation (as used in the field), English language usage, standardization body competentcy, and Wikipedia's use. -- (talk) 03:50, 5 January 2015 (UTC)

WikiProject X is live![edit]

WikiProject X icon.svg

Hello everyone!

You may have received a message from me earlier asking you to comment on my WikiProject X proposal. The good news is that WikiProject X is now live! In our first phase, we are focusing on research. At this time, we are looking for people to share their experiences with WikiProjects: good, bad, or neutral. We are also looking for WikiProjects that may be interested in trying out new tools and layouts that will make participating easier and projects easier to maintain. If you or your WikiProject are interested, check us out! Note that this is an opt-in program; no WikiProject will be required to change anything against its wishes. Please let me know if you have any questions. Thank you!

Note: To receive additional notifications about WikiProject X on this talk page, please add this page to Wikipedia:WikiProject X/Newsletter. Otherwise, this will be the last notification sent about WikiProject X.

Harej (talk) 16:57, 14 January 2015 (UTC)

metre inverse[edit]

Hello, I want to say that reciprocal metre in the table of page SI derived unit has a quantity of wavenumber. No offence. But it is also the quantity of dioptre! It should be added! --aGastya 11:36, 13 February 2015 (UTC) — Preceding unsigned comment added by AgastyaC (talkcontribs)

Thanks for the suggestion. I have added it. --Mark viking (talk) 12:00, 13 February 2015 (UTC)
Diopter is a unit and optical power is the corresponding quantity. I corrected this in the table and also added curvature and spatial frequency both measured in reciprocal meters. Ulflund (talk) 15:57, 13 February 2015 (UTC)

Newton Metre (or meter as per US) and Meter inverse vs Second inverse[edit]

N-m is for Torque as well as Energy too. Should not that too be added in the table? second inverse is there in table of "Named units derived from SI base units" and

metre inverse is names in table of "Some SI derived units" Why so? both of them should be in a same table, isn't it? And then also "Angular Frequency" is also missing in the table (second inverse) thanks! ~"aGastya" ✉ let’s talk about it :) 14:54, 18 February 2015 (UTC)

What article are you referring to? Jc3s5h (talk) 16:13, 18 February 2015 (UTC)
I think User:Acagastya is referring to the second table in SI derived units. Nm is not used for energy, for that we have the dimensionally equivalent unit joule which can be found in the table of named units. Hz or inverse second is in the named units table because it has its own name contrary to inverse meter. Angular velocity, the vector equivalent of angular frequency, with the same unit rad/s is in the table. Ulflund (talk) 17:53, 18 February 2015 (UTC)

at least those (s inverse quantities) should be in the table of "examples of derived quantities and units" as they don't have derived names! isn't it @User:Ulflund? Because i meant to say that meter inverse is there in 2nd table; secont inverse should also be there ~"aGastya" ✉ let’s talk about it :) 06:10, 19 February 2015 (UTC)

1/s shouldn't be in the table since it is the same as Hz which is in the table above. rad/s is already in the table, but maybe it could link to angular frequency as well as angular velocity. Ulflund (talk) 06:47, 19 February 2015 (UTC)

energy and torque both have same dimensional formula but still you said they are different, and angular velocity isn't expressed in Hz (or is it i have never heard :no offence) @User:Ulflund ~"aGastya" ✉ let’s talk about it :) 08:18, 19 February 2015 (UTC)

Look in the table. Angular velocity is there. Its unit is rad/s. Ulflund (talk) 16:52, 19 February 2015 (UTC)


Hello, i would like to tell that in Biology we have a term Svedberg unit which isn't a SI unit of sedimentation coefficient. it is denoted by S or Sv and equal to 10-13s. will it qualify in Named units derived from SI base units? Another thing i am concerned is: Sedimentation rate. it is GENERALLY measured in mm/hr (dimmensionally equal to speed). and its conversion to SI unit is,00,000)* m.s-1. to the best of my knowledge, it won't qualify in any of the 2 tables. But please check it once. (Added only because of biological importance) Thanks ~"aGastya" ✉ let’s talk about it :) 08:37, 19 February 2015 (UTC)


isn't mho a Named units derived from SI base unit? I don't know but if it is, it isould be there adjecent to siemens ~"aGastya" ✉ let’s talk about it :) 11:24, 19 February 2015 (UTC)

either of two things[edit]

1. would not dalton qualify in the Named units derived from SI base units table? 2. if not, it is there in other accepted units at the bottom, so thomson should also be there isn't it? ~"aGastya" ✉ let’s talk about it :) 16:35, 19 February 2015 (UTC)

Answer to all these questions: The tables are about SI units, so if you cannot find it in the SI Brochure (International Bureau of Weights and Measures (2006), The International System of Units (SI) (PDF) (8th ed.), ISBN 92-822-2213-6 ), it probably doesn't belong. Ulflund (talk) 05:52, 20 February 2015 (UTC)

"Task" as a defined measurement of land area[edit]

I am working on a British Library Endangered Archives project in Montserrat, West Indies. There are references in old wills to "tasks of land" being left to beneficiaries. I have been unable to find a definition of this measurement of area (there must be one if a will is to be validly executed), in fact few online references at all - all in the English-speaking Caribbean. Elderly local retired farm-workers I have spoken to remember the term as a unit of measurement for agricultural piece-work (which seems logical given the word), measured by a succession of rod placements, but disagree about the length of the rod and the area defined. A local lawyer remembers his father (also a lawyer) drawing up wills using the term but does not know its definition. Can anyone help with this, please? I can post/send scans of the documents containing the references to "task of land". (Not sure how to do it here)

Neilhow (talk) 15:32, 27 February 2015 (UTC)

WikiProject X Newsletter • Issue 3[edit]

Greetings! For this month's issue...

We have demos!

After a lengthy research and design process, we decided for WikiProject X to focus on two things:

  • A WikiProject workflow that focuses on action items: discussions you can participate in and tasks you can perform to improve the encyclopedia; and
  • An automatically updating WikiProject directory that gives you lists of users participating in the WikiProject and editing in that subject area.

We have a live demonstration of the new WikiProject workflow at WikiProject Women in Technology, a brand new WikiProject that was set up as an adjunct to a related edit-a-thon in Washington, DC. The goal is to surface action items for editors, and we intend on doing that through automatically updated working lists. We are looking into using SuggestBot to generate lists of outstanding tasks, and we are looking into additional options for automatic worklist generation. This takes the burden off of WikiProject editors to generate these worklists, though there is also a "requests" section for Wikipedians to make individual requests. (As of writing, these automated lists are not yet live, so you will see a blank space under "edit articles" on the demo WikiProject. Sorry about that!) I invite you to check out the WikiProject and leave feedback on WikiProject X's talk page.

Once the demo is sufficiently developed, we will be working on a limited deployment on our pilot WikiProjects. We have selected five for the first round of testing based on the highest potential for impact and will scale up from there.

While a re-designed WikiProject experience is much needed, that alone isn't enough. A WikiProject isn't any good if people have no way of discovering it. This is why we are also developing an automatically updated WikiProject directory. This directory will surface project-related metrics, including a count of active WikiProject participants and of active editors in that project's subject area. The purpose of these metrics is to highlight how active the WikiProject is at the given point of time, but also to highlight that project's potential for success. The directory is not yet live but there is a demonstration featuring a sampling of WikiProjects.

Each directory entry will link to a WikiProject description page which automatically list the active WikiProject participants and subject-area article editors. This allows Wikipedians to find each other based on the areas they are interested in, and this information can be used to revive a WikiProject, start a new one, or even for some other purpose. These description pages are not online yet, but they will use this template, if you want to get a feel of what they will look like.

We need volunteers!

WikiProject X is a huge undertaking, and we need volunteers to support our efforts, including testers and coders. Check out our volunteer portal and see what you can do to help us!

As an aside...

Wouldn't it be cool if lists of requested articles could not only be integrated directly with WikiProjects, but also shared between WikiProjects? Well, we got the crazy idea of having experimental software feature Flow deployed (on a totally experimental basis) on the new Article Request Workshop, which seeks to be a place where editors can "workshop" article ideas before they get created. It uses Flow because Flow allows, essentially, section-level categorization, and in the future will allow "sections" (known as "topics" within Flow) to be included across different pages. What this means is that you have a recommendation for a new article tagged by multiple WikiProjects, allowing for the recommendation to appear on lists for each WikiProject. This will facilitate inter-WikiProject collaboration and will help to reduce duplicated work. The Article Request Workshop is not entirely ready yet due to some bugs with Flow, but we hope to integrate it into our pilot WikiProjects at some point.

Harej (talk) 01:58, 19 April 2015 (UTC)


I have created an article on Size. This would seem to be relevant to this WikiProject. Cheers! bd2412 T 03:45, 12 May 2015 (UTC)

Main SI image notes[edit]

About the SI-units image, used all around, see Talk:International_System_of_Units#Top_image_confusion. -DePiep (talk) 11:52, 16 May 2015 (UTC)