User talk:Chetvorno

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Image:Turkey.Konya007.jpg[edit]

I appreciate your effort to improve the original image. But I'm afraid that your version doesn't resemble the clock as it stands in the museum. The image is just too bright. You have to keep in mind that the interior of the Mevlana museum is rather dark. My photo was made with flashlight and renders the exact colors. I admit the sign on the wall could have been filtered out by me. But you're always free to give it another try. JoJan 15:52, 3 December 2007 (UTC)

I'm afraid I sacrificed faithfully rendering the lighting in your beautiful original photo for a purpose. I was trying to bring out the clock's details so I could use the picture in the article Wikipedia:Longcase clock. In the original, you can barely see the clock's face. I agree, it does look garish. I uploaded another version. It still looks like it's floodlighted, but the colors are a little more realistic. --Chetvorno 11:54, 4 December 2007 (UTC)


Image:Gold_leaf_electroscope_amateur.jpg[edit]

Image deletion warning Image:Gold_leaf_electroscope_amateur.jpg has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.

If you created this image, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue. If the file is up for deletion because it has been superseded by a superior derivative of your work, consider the notion that although the file may be deleted, your hard work (which we all greatly appreciate) lives on in the new file.
In all cases, please do not take the deletion request personally. It is never intended as such. Thank you!

Category:Animated SVG[edit]

You can upload your animated SVG on commons, even if Wikipedia can't display them, that can allow (wiki)graphists to learn more about Animated SVG (which display fine when look directly on the true url , ex. http://upload.wikimedia.org/wikipedia/commons/1/1b/Animate_sbs.svg_tutorial.svg ), and encourage to allow SVG animation directly on wikipedia. 19:01, 23 December 2007 (UTC)

Mignon 4 typewriter[edit]

Thank you for correcting info in Image:Maszyna.do.pisania.XIXw.jpg.

There is small one question regarding this typewriter: you can see three buttons here, but on Image:Maszyna.do.pisania.XIXw.jpg there are only two...

Best regards,

Julo 19:31, 14 January 2008 (UTC)

I see, you're right. Your machine must be a Mignon 3, not Mignon 4. From The Virtual Typewriter Museum, 'The only difference between the Mignon 3 and 4 was the addition of a backspace key to the right of the mechanism.' I changed the image description. --Chetvorno 19:45, 14 January 2008 (UTC)

Home recording v/s dictation machine[edit]

The machine shown at Image:PhonoCylinderHomeRecord.jpg is a home phonograph with recording head attachment, not uncommon at the era, and not the same as the dictation machines of the era, which had additional machinery, for example enabling stenographers to pause or replay sections of a recording. Cheers, -- Infrogmation 01:54, 4 February 2008 (UTC)


Image:TelescopeLick36in_CharlesAYoung(1916)ATextbookOfGeneralAstronomy_Frontispiece_i_48color.png[edit]

Image deletion warning Image:TelescopeLick36in_CharlesAYoung(1916)ATextbookOfGeneralAstronomy_Frontispiece_i_48color.png has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.

If you created this image, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue.
In all cases, please do not take the deletion request personally. It is never intended as such. Thank you!


Afrikaans  Bahasa Indonesia  dansk  italiano  eesti  sicilianu  Deutsch  català  magyar  čeština  português do Brasil  norsk bokmål  română  Esperanto  español  português  English  hrvatski  Plattdüütsch  français  Nederlands  norsk  occitan  Deutsch (Sie-Form)‎  shqip  norsk nynorsk  polski  galego  íslenska  slovenčina  slovenščina  suomi  svenska  Tiếng Việt  Türkçe  Zazaki  Ελληνικά  беларуская (тарашкевіца)‎  български  македонски  русский  српски / srpski  українська  հայերեն  বাংলা  മലയാളം  ไทย  မြန်မာဘာသာ  조선말  한국어  日本語  中文  中文(简体)‎  中文(繁體)‎  עברית  العربية  پښتو  فارسی  +/−

Chetvorno (talk) 23:15, 28 June 2008 (UTC)

Deleted this image as a duplicate, no worries. Please just use {{Duplicate}} for such cases in future. -mattbuck (Talk) 23:55, 28 June 2008 (UTC)


You're now a filemover[edit]

Hi Chetvorno, you're now a filemover. When moving files please respect the following advice:

  • Use the CommonsDelinker link in the {{Rename}} template to order a bot to replace all ocurrences of the old title with the new one.
  • Please do not tag redirects as {{Speedy}}. Other projects, like InstantCommons, might be using the file even though they don't show up in the global usage. Deleting the redirects would break their file references.
  • For guideline when to rename a file, please see Commons:File renaming and Commons:File naming.

Geagea (talk) 23:05, 28 December 2010 (UTC)

TUSC token 61e8a8d17b805e6ed390836c2e53bcfc[edit]

I am now proud owner of a TUSC account!

Your pictures about negative differential resistance[edit]

I have placed your two pictures about negative differential resistance at the top of Circuit idea story about negative differential resistance as they look very well; I like them. I have only made some corrections in CCNR image. If you have something against, let me know and I will remove them. Circuit-fantasist (talk) 22:22, 16 August 2012 (UTC)

I think its a little misleading to say the current controlled graph looks like a neon lamp characteristic. The neon lamp has a much flatter curve below the breakdown voltage V2 and a much sharper falloff of voltage above it. I added the statement that the voltage controlled graph looks like a tunnel diode curve because it happened to come out very close to an actual tunnel diode curve, not just to give an example. --Chetvorno (talk) 06:10, 17 August 2012 (UTC)

File:Electrical Experimenter Aug 1916 pg228.png page move[edit]

Your page move of File:Electrical Experimenter Aug 1916 pg228.png was not the best way to create a cropped image for the De Forest advertisement. You should have just created a new page named Audion vacuum tube advertisement.png. The Clapp-Eastman advertisement is lost. I have asked on Commons:Village_pump#Unusual_Page_Move for assistance on correcting this. -- Swtpc6800 (talk) 06:57, 12 January 2013 (UTC)

Yes, this was a very bad move. The cropped version should have been uploaded as a seperate file, and the original page left alone, with the original correct name. Please study the guidelines for renaming files {and associated talk page} and understand the value of not moving/renaming files unless really necessary. Also large modifications to existing files should almost aways be uploaded as seperate files. In this case the original file is a record of the complete printed page and is part of a set of images of the publication and should not have been over written with something different. --Tony Wills (talk) 07:52, 12 January 2013 (UTC)
I'm really sorry; I should have known better. I salvaged a copy of the original file and uploaded it to File:Electrical Experimenter Aug 1916 pg 228.png. Hope this will help undo some of the damage. --Chetvorno (talk) 10:30, 12 January 2013 (UTC)

Picture of the Year 2013 R1 Announcement[edit]

Round 1 of Picture of the Year 2013 is open![edit]

2012 Picture of the Year: A pair of European Bee-eaters in Ariège, France.

Dear Wikimedians,

Wikimedia Commons is happy to announce that the 2013 Picture of the Year competition is now open. This year will be the eighth edition of the annual Wikimedia Commons photo competition, which recognizes exceptional contributions by users on Wikimedia Commons. Wikimedia users are invited to vote for their favorite images featured on Commons during the last year (2013) to produce a single Picture of the Year.

Hundreds of images that have been rated Featured Pictures by the international Wikimedia Commons community in the past year are all entered in this competition. These images include professional animal and plant shots, breathtaking panoramas and skylines, restorations of historical images, photographs portraying the world's best architecture, impressive human portraits, and so much more.

For your convenience, we have sorted the images into topical categories. Two rounds of voting will be held: In the first round, you may vote for as many images as you like. The top 30 overall and the most popular image in each category will continue to the final. In the final round, you may vote for just one image to become the Picture of the Year.

Round 1 will end on 7 February 2014. Click here to learn more and vote »

Thanks,
the Wikimedia Commons Picture of the Year committee

You are receiving this message because you voted in the 2012 Picture of the Year contest.

File:Broadcasting_a_radio_play_at_NBC_studio.jpg[edit]

Hello! The date listed on the image (1907) seems a bit off, because the first commercial broadcast station (KDKA) went live in 1930. Unless there is time-travel involved, I'm not sure how they did it. :) — Safety Cap (talk) 01:49, 19 April 2014 (UTC)

Thanks so much for catching that; I should have noticed that little anachronism. You really uncovered a mystery, though. The source I got the picture from, an encyclopedia on Google Books, lists a publication date of 1907, and it's title page is stamped "Harvard Library 1908". Yet the text has references to dates up to 1931!!!! It was obviously written after that date. You must have been right about the time travel.
BTW, didn't KDKA begin broadcasting in 1919, not 1930?--Chetvorno (talk) 05:06, 19 April 2014 (UTC)

Upcoming Wiki Science Competition[edit]

Hi, I am contacting all active commons users I can find more interested in the management of pictures related to scientific topics. If you have time, could you take a look in Commons:Village_pump#Upcoming_Wiki_Science_Competition. Thank you.--Alexmar983 (talk) 07:43, 17 September 2017 (UTC)

Important message for file movers[edit]

Commons File mover.svg

A community discussion has been closed where the consensus was to grant all file movers the suppressredirect user right. This will allow file movers to not leave behind a redirect when moving files and instead automatically have the original file name deleted. Policy never requires you to suppress the redirect, suppression of redirects is entirely optional.

Possible acceptable uses of this ability:

  • To move recently uploaded files with an obvious error in the file name where that error would not be a reasonable redirect. For example: moving "Sheep in a tree.jpg" to "Squirrel in a tree.jpg" when the image does in fact depict a squirrel.
  • To perform file name swaps.
  • When the original file name contains vandalism. (File renaming criterion #5)

Please note, this ability should be used only in certain circumstances and only if you are absolutely sure that it is not going to break the display of the file on any project. Redirects should never be suppressed if the file is in use on any project. When in doubt, leave a redirect. If you forget to suppress the redirect in case of file name vandalism or you are not fully certain if the original file name is actually vandalism, leave a redirect and tag the redirect for speedy deletion per G2.

The malicious or reckless breaking of file links via the suppressredirect user right is considered an abuse of the file mover right and is grounds for immediate revocation of that right. This message serves as both a notice that you have this right and as an official warning. Questions regarding this right should be directed to administrators. --Majora (talk) 21:35, 7 November 2019 (UTC)

File:FET Armstrong oscillator.svg error[edit]

Hello Chetvorno. I think the picture FET Armstrong oscillator.svg has a little error. The dot next to L2 should be next to the bottom of L2, not next to the top. This dot shows how the windings are wired. With a source circuit, output signal is phase-reversed to input signal. The wiring top of L1 is next to bottom of L2 phase-reverses the signal, too. Two phase-reversals are the same as no phase-reversal and the oscillator oscillates. Please fix the picture AndreAdrian (talk) 09:05, 4 December 2019 (UTC)

Superhet image[edit]

Looking at image:

https://en.wikipedia.org/wiki/Superheterodyne_receiver#/media/File:How_superheterodyne_receiver_works.svg

I believe the image called Mixer input (and thus output as well) is incorrect.

According to the filter function in RF filter, S1 should be left at the original strength, while the larger signal to its left should be reduced by some 60 to 70% of its original stength. Likewise, the other signals in the RF range around S1 should also be much smaller by the time they get to the mixer.

Maury Markowitz (talk) 11:25, 22 May 2020 (UTC)

Darn, I was hoping no one would notice that. After I drew the RF filter characteristic and the rest of the drawing, I realized that as you say the outlier signals at the ends would have to be shrunk 60%. This is just due to the unrealistically wide frequency separation of the signals I showed on the graph; in a real superhet I think the RF filter is far too broad to play any significant role in bandpass filtering, it is just there to filter out the image frequency. I didn't want to give readers this erroneous impression, so I attenuated those end signals some, maybe 30%, but not as much as they should have been. Ok, I'll fix it. Thanks Chetvorno (talk) 15:18, 21 July 2021 (UTC)

A barnstar for you![edit]

Graphic Designer Barnstar Hires.png The Graphic Designer's Barnstar
Thanks for providing a diagram for electronic band structure! Ciderpoem (talk) 08:20, 4 May 2021 (UTC)

File:Transmitter tank inductor.jpg[edit]

Commons-emblem-issue.svg
File:Transmitter tank inductor.jpg has been listed at Commons:Deletion requests so that the community can discuss whether it should be kept or not. We would appreciate it if you could go to voice your opinion about this at its entry.

If you created this file, please note that the fact that it has been proposed for deletion does not necessarily mean that we do not value your kind contribution. It simply means that one person believes that there is some specific problem with it, such as a copyright issue. Please see Commons:But it's my own work! for a guide on how to address these issues.

Please remember to respond to and – if appropriate – contradict the arguments supporting deletion. Arguments which focus on the nominator will not affect the result of the nomination. Thank you!

 — billinghurst sDrewth 08:30, 21 July 2021 (UTC)