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[edit] MacAdam ellipses diagram: permission requestDear PAR: MIT OpenCourseWare would like to use this image http://en.wikipedia.org/wiki/File:CIExy1931_MacAdam.png in some imaging course material published under Creative Commons by-nc-sa (attribution-noncommercial-sharealike) license. As our license is legally a bit different from the GFDL you've placed on the Wikipedia image page, may we have your permission? Best regards, Curt Newton - Publication Manager, MIT OpenCourseWare - cjnewton@mit.edu Cjnewton mit (talk) 20:02, 18 March 2009 (UTC) [edit] Analemma"The width of the analemma is a result of the ellipticity of the earths orbit. Please explain how this relates to vibration in universal joints." The "figure-8" related East-West motion in the analemma has absolutely nothing to do with the eccentricity of the Earth's orbit. Eccentricity causes a 12 month period East-West motion, not a 6 month period! It distorts the "figure-8". The "figure-8" East-West motion is due to the tilt of the Earth's axis. Assuming a circular orbit for simplicity, the 24 hour strobed position of the sun follows a great circle across the earth with constant velocity and one year period. During the equinoxes this sun circle crosses the equator at an angle, so it's eastward movement is slower that the 24-hour strobed rotation of the Earth. During the solstices the sun is moving parallel to the equator, and since by defintion of the solar day they must have the same yearly average, it is moving faster that the Earth's eastward rotation. —Preceding unsigned comment added by Cloudswrest (talk • contribs) 18:25, 10 September 2008 (UTC) [edit] Gibbs ParadoxI noticed that you edited the article on Gibbs Paradox, and seem to have some comfort level with the material. I have reason to be suspicious of the information theory treatment, but am not technically competent to review it. If you are, would you please take the time to review that section carefully?Kww (talk) 21:46, 21 November 2007 (UTC)
[edit] RE: Multiple wikify requestsHi, Thanks for the message.. Right now... I am prepareing for an exam on "Material Science".. While going through these articles, I encountered situations where I couldn't proceed to next page due to lack of Wiki links (internal links).. I corrected some of them.. but right now I do not have enough time to correct all of them so just put wikify requests.. :) Will either put links, or explanation in talk page after my exams.. :) The articles I put wikify requests inclue (as u mentioned in your message) : Slip (materials science) Non-Newtonian fluid Strain (materials science) Creep (deformation) Tensile stress Frank-Read Source Annihilation Burgers vector Interstitial defect Thenks.. DhananSekhar 18:45, 30 November 2007 (UTC) [edit] re: PulleyGood morning, PAR. I just had to revert your latest edit to the Pulley article. I understand your point but when you made the change, you brought the vandalism back. If you're going to fix the article, please fix it completely. It is more important that we keep the vandalism out than that we make a technical correction about "unit weight". Thanks. Rossami (talk) 16:22, 10 December 2007 (UTC)
[edit] Images of two-dimensional coordinate systems?Hi PAR, Have we met before? I'm thinking that we have, but, unfortunately, I can't remember where — maybe at the equipartition theorem? :) I noticed your wonderful red-and-cyan pictures at the articles for prolate and oblate spheroidal coordinates! I really like the way you labeled the individual isosurfaces, too. Would you be willing to do something similar for the other two- and three-dimensional orthogonal coordinate systems, or at least tell me how to do it? I've long been thinking of fixing them up and would really appreciate your help. :) Willow (talk) 23:45, 17 January 2008 (UTC)
Hey PAR, Thanks for your really nice letter! You can send any articles you like to the same e-mail address. I'd like to see the pictures you mention! I'm ploughing ahead with making images for the other orthogonal coordinate systems. I'll try to do conical coordinates tomorrow, since they seem one of the very coolest. I like the little taco shape where the sphere and the elliptical cone intersect; it's somehow elegant, no? I just realized today that I hadn't understood even some of the basic stuff about the coordinates, e.g., that you need to eliminate the degeneracy in the bipolar coordinates. :( I should've realized that if the coordinate surfaces meet in two places, you need to take special precautions against degeneracy. For the bipolar coordinates, it turns out that σ can range from -π to π, not merely half that range as I'd originally thought; I think I was scared off by the infinity! ;) Ta-ta for today, Willow (talk) 21:39, 6 February 2008 (UTC) [edit] MacAdam ellipseThe MacAdam ellipse delineates—not defines—the contour for the minimum perceptible distance. The concept of distance is defined by the distance metric (cf. color difference). The distance may be zero, just noticeable (JND), or anything at all. How would you draw the ellipses without the formal definition provided by color difference? That sentence is wrong. --Adoniscik (talk) 17:15, 19 January 2008 (UTC)
[edit] CIEWhat I did is explicitly allowed, per the page you cited: "Deleting material not relevant to improving the article". None of that stuff is relevant, so please remove or archive it. p.s. your talk page is a bit long. --Adoniscik (talk) 02:04, 19 February 2008 (UTC)
It's only a talk page so I'm not bothered, but the junk currently on it only confuses new editors. When I looked at the talk page I wondered why the discussion was so off-topic. If you look at the dates of the comments, you'll see they are referring to a former state of article that barely addresses the actual subject. ColorRendering and chromaticity coordinates?? —Preceding unsigned comment added by Adoniscik (talk • contribs) 09:20, 19 February 2008 (UTC) [edit]Hey PAR! I was wondering if you wanted to help me re-write the gas-related articles. I just finished Gas and would like you to take a look at it since I've seen you contribute a lot to these types of articles. I know you're a fan of thermo, as am I... so I figured it would be great if we could work together to make these articles actually make sense. Ideal gas is falling apart and it needs to be redone. Honestly, I feel that the thermo eqns are great but also excessive in this article. Honestly, they dont really talk about ideal gases at all... its just kind of a stand-alone "heres some thermo!" kind of thing. I think they would be better fit in a different article and just taken out of the ideal gas article. I think the Ideal gas page should be more of a model assumption clarification more than a thermo class. so basically... when we analyze a gas, we establish a set of assumptions that we're gonna go with for the model and then do it. an "ideal gas" is just one of these assumption bases. I think this article just needs to define what these assumptions are. A separate article, Real gas, can be expanded on to include all the different types of models and lack of assumptions and all the statistical thermo and compressibility and all the magical deviations from the "ideal" model. Please take a look at these articles and get back to me. let me know if you want to help me out! Thanks! Katanada (talk) 07:12, 26 February 2008 (UTC) [edit] Fair use rationale for Image:Masuda2.pngThanks for uploading or contributing to Image:Masuda2.png. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in Wikipedia articles constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use. Suggestions on how to do so can be found here. Please go to the image description page and edit it to include a fair use rationale. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page. If you have uploaded other fair use media, consider checking that you have specified the fair use rationale on those pages too. You can find a list of 'image' pages you have edited by clicking on the "my contributions" link (it is located at the very top of any Wikipedia page when you are logged in), and then selecting "Image" from the dropdown box. Note that any non-free media lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you. Rettetast (talk) 01:27, 8 March 2008 (UTC) [edit] Image:Baboon24.pngI have tagged Image:Baboon24.png as {{no rationale}}, because it does not provide a fair use rationale. If you believe the image to be acceptable for fair use according to Wikipedia policy, please provide a rationale explaining as much, in accordance with the fair use rationale guideline, on the image description page. Some examples can be found at Wikipedia:Use rationale examples. Please also consider using {{non-free fair use in|article name}} or one of the other tags listed at Wikipedia:Image copyright tags/Non-free. Thank you. Rettetast (talk) 01:28, 8 March 2008 (UTC) [edit] Speedy deletion of Template:CallTestA tag has been placed on Template:CallTest requesting that it be speedily deleted from Wikipedia. This has been done under section T3 of the criteria for speedy deletion, because it is a deprecated or orphaned template. After seven days, if it is still unused and the speedy deletion tag has not been removed, the template will be deleted. If the template is intended to be substituted, please feel free to remove the speedy deletion tag and please consider putting a note on the template's page indicating that it is substituted so as to avoid any future mistakes (<noinclude>{{transclusionless}}</noinclude>). Thanks. --MZMcBride (talk) 21:04, 23 March 2008 (UTC) [edit] Non-free use disputed for Image:Mae_West_Signature.pngThanks for uploading Image:Mae_West_Signature.png. Unfortunately, I think that you have not provided a proper rationale for using this image under "fair use". Please read the instructions at Wikipedia:Non-free content carefully, then go to the image description page and clarify why you think the image qualifies for fair use. Using one of the templates at Wikipedia:Fair use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy, but remember that you must complete the template. Do not simply insert a blank template on an image page. Note that the image description page must include the exact name or a link to each article the image is used in and a separate rationale for each one. (If a link is used, automated processes may improperly add the related tag to the image. Please change the fair use template to refer to the exact name, if you see this warning.) If it is determined that the image does not qualify under fair use, it will be deleted after seven days according to our Criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you. Rettetast (talk) 13:28, 1 April 2008 (UTC) [edit] Fair use rationale for Image:TeriCopley.pngThanks for uploading or contributing to Image:TeriCopley.png. I notice the image page specifies that the image is being used under fair use but there is not a suitable explanation or rationale as to why each specific use in Wikipedia constitutes fair use. Please go to the image description page and edit it to include a fair use rationale. If you have uploaded other fair use media, consider checking that you have specified the fair use rationale on those pages too. You can find a list of 'image' pages you have edited by clicking on the "my contributions" link (it is located at the very top of any Wikipedia page when you are logged in), and then selecting "Image" from the dropdown box. Note that any non-free media lacking such an explanation will be deleted one week after they have been uploaded, as described on criteria for speedy deletion. If you have any questions please ask them at the Media copyright questions page. Thank you. NOTE: once you correct this, please remove the tag from the image's page. STBotI (talk) 22:40, 4 April 2008 (UTC) [edit] Replaceable fair use Image:EmmylouHarris80.jpgThanks for uploading Image:EmmylouHarris80.jpg. I noticed the description page specifies that the media is being used under a claim of fair use, but its use in Wikipedia articles fails our first non-free content criterion in that it illustrates a subject for which a freely licensed media could reasonably be found or created that provides substantially the same information. If you believe this media is not replaceable, please:
Alternatively, you can also choose to replace this non-free media by finding freely licensed media of the same subject, requesting that the copyright holder release this (or similar) media under a free license, or by taking a picture of it yourself. If you have uploaded other non-free media, consider checking that you have specified how these images fully satisfy our non-free content criteria. You can find a list of description pages you have edited by clicking on this link. Note that even if you follow steps 1 and 2 above, non-free media which could be replaced by freely licensed alternatives will be deleted 2 days after this notification (7 days if uploaded before 13 July 2006), per our non-free content policy. If you have any questions please ask them at the Media copyright questions page. Thank you. Do you want to opt out of receiving this notice? Rossrs (talk) 13:08, 22 May 2008 (UTC) Ok, I have done that.PAR (talk) 18:22, 22 May 2008 (UTC) [edit] optics imagesI like your image on the "real image" article. I would like to add one that I think would help the article. Can you tell me how I can upload the svg file I made? Thanks. 209.253.120.198 (talk) 01:12, 6 June 2008 (UTC)
[edit] Speedy deletion of Image:BuffaloNYFlag.jpgA tag has been placed on Image:BuffaloNYFlag.jpg requesting that it be speedily deleted from Wikipedia. This has been done under section I8 of the criteria for speedy deletion, because it is available as a bit-for-bit identical copy on the Wikimedia Commons under the same name, or all references to the image on Wikipedia have been updated to point to the title used at Commons. If you think that this notice was placed here in error, you may contest the deletion by adding [edit] values for CIE1931 XYZCMF.pngYou seem to be the person who uploaded Image:CIE1931 XYZCMF.png, and so I'd like to ask you where you got the values for the chart. Specifically, I'm trying to find the area under the curves, and data tables for them would be quite helpful. (In theory, I think you're supposed to explain how you came up with the chart, but I'm not going to get all Wikilawyer on you) superlusertc 2008 August 29, 07:58 (UTC)
[edit] Disputed non-free use rationale for Image:Lenna.pngThank you for uploading Image:Lenna.png. However, there is a concern that the rationale provided for using this image on Wikipedia may not meet the criteria required by Wikipedia:Non-free content. This can be corrected by going to the image description page and add or clarify the reason why the image qualifies under this policy. Adding and completing one of the templates available from Wikipedia:Non-free use rationale guideline is an easy way to ensure that your image is in compliance with Wikipedia policy. Please be aware that a non-free use rationale is not the same as an image copyright tag; descriptions for images used under the non-free content policy require both a copyright tag and a non-free use rationale. If it is determined that the image does not qualify under the non-free content policy, it might be deleted by an administrator within a few days in accordance with our criteria for speedy deletion. If you have any questions, please ask them at the media copyright questions page. Thank you. Stifle (talk) 12:54, 17 October 2008 (UTC) [edit] Broken imagesHi, images broken, please check: Maksim-e (talk) 22:26, 14 November 2008 (UTC) [edit] File:Lenna.pngYou undid my removal of your Lenna image from her biogaphical page. The use of her image does not qualify as fair use on her biographical page, as any image of her could do here. There fore on the Lena Soderberg page it fails WP:NFCC 1. No free equivalent. The use of the image on the other pages is justified as the image is not replacable on the Lenna page, for example. However just because fair use is allowed on other pages doesn't mean fair use is allowed on any page. That is why no biographical pages of living persons have a fair use image. Rambo's Revenge (talk) 14:41, 12 December 2008 (UTC) P.S. My original edit summary for removing it: "remove rationale for biographical person (as a free image can be made), just because they aren't cracking down on the use of this image does not make it public domain" was wrong. I didn't mean public domain, i meant fair use. 14:44, 12 December 2008 (UTC)
[edit] Entropy expression on erlang distribution pageHi PAR. Yours was the first entry for entropy on the erlang distribution page. The expression is in error and I corrected it (see Tom Cover's latest edition of his info theory book, page 661) Cheers, Chris (talk) 08:05, 6 February 2009 (UTC) [edit] Drying out a log...Read the wiki article on wood drying, specifically issues and cracking on the outer parts when moisture evaporates more quickly than in the interior... I noticed that you are a recent contributor to this page. I wonder if the inner section of a log was hollowed out would that reduce risk of cracking? (ie relatively uniform and totally intact outer rim of tree, not bark) Also, if doing this, in the drying process, would the shape warp? Do you know? Can you tell I am looking to make a drum? :> Please let me know if you have any idea. A post here or email: aruenfire@gmail.com . Thanks. Woodwater (talk) 03:29, 17 February 2009 (UTC)WW
Hello! Are you physicist? —Preceding unsigned comment added by 132.199.119.184 (talk) 12:59, 27 March 2009 (UTC) Hello! Yes. PAR (talk) 14:05, 27 March 2009 (UTC) [edit] LennaHi [edit] Chromaticity DiagramsFYI, 98.216.110.149 (talk · contribs) brought up a question about the diagrams you made, specially the position of the white point. See Wikipedia talk:WikiProject Color#Several incorrect chromaticity diagrams and Talk:Chromaticity#Chromaticity diagram colors are wrong. PaleAqua (talk) 06:28, 4 September 2009 (UTC) [edit] White House/Fox NewsFYI. You may want to express your opinion on a recently deleted article: Wikipedia:Deletion_review/Log/2009_October_28 —Preceding unsigned comment added by Jwesley78 (talk • contribs) 21:50, 30 October 2009 (UTC)
[edit] User:JohnHistoryFYI. It appears that our comrade User:JohnHistory completely flipped out! I hope he's OK. Jwesley78 (talk) 02:22, 1 November 2009 (UTC)
[edit] Primitive communismHi there. I noticed you added a reference, "Scott, John; Marshall, Gordon (2007). A Dictionary of Sociology. USA: Oxford University Press. ISBN 978-0198609872." to primitive communism; I was wondering if you could perhaps dig it up and check to see if it supports the edit made by this user here. If it doesn't, their edit is either incorrect and unsupported, or correct and we need a new reference. I don't know anything about the reference to be able to rollback again in good conscience, so if you could please check it out it would be most appreciated. Cheers. SMC (talk) 00:40, 6 November 2009 (UTC)
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