Talk:Lénárt sphere

Earliest example

The article says "The Lénárt sphere was invented by István Lénárt in Hungary in the early 1990s". But I saw an early prototype at ICME in Budapest in 1988.

Jb1944 (talk) 07:35, 8 August 2013 (UTC)

Hi Jb1944, do you have any reliable sources to support your statement so that the article can be corrected. Thanks. Ajax F¡ore_talk 20:18, 8 September 2013 (UTC)

Only my memory! (or you could email Istvan Lenart to get the information direct from him. I have his address if you want it) Jb1944 (talk) 12:42, 29 September 2013 (UTC)

Seeking assistance

Not sure why first reference/ citation isn't showing, it's a pretty new title, please help. Maybe page number is an issue. Also trying to find a non copyrighted picture of this tool, but did include an external link to google pictures search with many examples. I thought of making it a subsection but it is used in so many fields that it would have to be a sub for a whole bunch of them, from spherical trig to geom, visualization, etc. Pdecalculus (talk) 01:29, 27 December 2012 (UTC)

ALSO: Not sure why valid links are showing in red. I can take a picture of this tool and donate the picture to Wiki to be sure there are no gnu issues if no one has a better idea of where to show a copyright free one, a picture would be cool. I finally got warning off of first reference, but the code is showing in the ref section rather than the ref info. Added an under construction gadget, hope to get a little help from experienced editors. Am also trying to firm up references to dates of sphere's first creation, etc. but some of the web references are in Hungarian. Many teachers in the LA school system use this, as well as a lot in Europe, but K-12 tools are less referenced than their software equivalents, which come and go pretty often. Pdecalculus (talk) 02:00, 27 December 2012 (UTC)

Hi there, you can get your copyright questions answered here WP:MCQ. If you speak Hungarian, you can use your own translation following this guide WP:MCQ, if you don't, you can get help from translators Wikipedia:Translators_available#Hungarian-to-English. The reference and red links have been fixed, you can view the article history to see what you did wrong. Ajaxfiore (talk) 02:36, 27 December 2012 (UTC)

The redlink problem was because Wikipedia's Manual of Style heavily prefers lowercase, although the uppercase version should still redirect there. -- YPNYPN ✡ 02:48, 27 December 2012 (UTC)

WOW THANKS to Ajaxfiore, Salix Alba and YPNYPN for not only help but also the cool picture! I'm raw new here but you folks are great, thanks again. I also did a bunch more links to other related articles that mention this system so this won't be an orphan. There are still many more in math education, engineering, etc. These also seem to come, according to the texts I've read and Salix's picture and links, with both stellar and GIS overlays, so they also have relevance to astronomy and obviously geography. They are much more prevalent in Europe right now than the US or East, but Brummelen's new book is sparking a lot more interest worldwide, at least amongst us math teachers! The device also has vast use in fields like game programming and even medical imaging and RNA folding, but I need to find more references before adding the expanded uses. Software developers for programs like Maya, Zbrush, etc. also use it, but I'll need to find more scholarly articles that aren't copyrighted to have good references to those and keep it out of the original research or info category. Pdecalculus (talk) 15:42, 29 December 2012 (UTC)

Suggestion

Hi there! I just have one suggestion:

According to [this], "Lenart Sphere" should be spelled "Lénárt Sphere" since the inventor is István Lénárt. I also don't think "Sphere" should be capitalized. See WP:MOVE for instructions on how to move (rename) a page. Ajaxfiore (talk) 23:41, 3 February 2013 (UTC)

It's been over a week since I suggested this, so I went ahead and moved it. I hope I did the right thing. Ajaxfiore (talk) 02:55, 13 February 2013 (UTC)

What the hell?

Most of this page appears to be a rather unfocused, uh, mélange of random bits and pieces about three dimensional graphics programming, special functions, the Laplace and Fourier transforms etc. etc. as they relate to spherical geometry and whatever else the author of the "Applications" section had on his mind. Whatever the point of all this stuff was supposed to be, I would suggest removing most of it and tying what remains very tightly to the topic of the article (a piece of apparatus for visualizing constructions in spherical geometry, if you've forgotten by the time you get to the end of the "Applications" section). 174.102.100.152 (talk) 00:58, 25 March 2014 (UTC)

I agree I started to rewrite the article a bit. This page should be about the educational tool not about anything else. (what can be moved to other pages). WillemienH (talk) 07:04, 1 September 2015 (UTC)

clean up

hi I just cleaned up the page, i think lot of the old information could go to other pages (especially the spherical geometry article or even to seperate articles. This article should only be about the educational sphere itself , not about computer programs and that ilk.WillemienH (talk) 06:34, 3 September 2015 (UTC)

Photo gallery

user:Pondnotwho and I made this photo gallery demonstrating some of the components of the Lénárt sphere. If there are no objections, one of us would like to include it in the article.--Guy vandegrift (talk) 18:17, 28 October 2015 (UTC)

• 
    compass
• 
  straightedge (great circle)
• 
    cover slip

Great!!, But I would like to have them not as a gallery but as seperate pictures and also a lot bigger (the pictures are there to illustrate something, and that something should be clearly visuable ), problem is off course the sphere is itself transparant. Maybe use one of them as main picture as well. ( I would prefer the compass one ) WillemienH (talk) 19:54, 28 October 2015 (UTC)