User talk:Cattlecall1

Hello, Cattlecall1! Welcome to Wikipedia! Thank you for your contributions. You may benefit from following some of the links below, which will help you get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are already excited about Wikipedia, you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field when making edits to pages. Happy editing! DVdm (talk) 21:12, 25 February 2011 (UTC) Getting Started The five pillars of Wikipedia • Tutorial • Your first article How to: edit a page • upload an image Getting Help Frequently Asked Questions New contributors' help page Where to: ask questions • make requests Request administrator attention Policies and Guidelines Neutral point of view • Reliable sources Verifiability • Citing sources • No original research What Wikipedia is not • Biographies of living persons Manual of Style • Three-revert rule • Sock puppetry Copyrights • Policy for non-free content • Image use policy External links • Spam • Vandalism Deletion policy • Conflict of interest • Notability The Community Community Portal • Adopt-a-user program Assume good faith • Civility • Etiquette No personal attacks • Resolving disputes Build consensus • Village pump Signpost • IRC channels • Mailing lists Things to do Be bold in editing • Help develop an article Maintenance • Peer review • Requested articles Join a WikiProject • Translating articles Cleaning up: General • Spam • Vandalism Miscellaneous Categories • Disambiguity • Stubs User pages • Talk pages Useful templates • Tools • User scripts

Sources and original research

Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content, as you did to the article Relativistic Doppler effect, please cite a reliable source for the content of your edit. This helps maintain our policy of verifiability. See Wikipedia:Citing sources for how to cite sources, and the welcome page to learn more about contributing to this encyclopedia. Thank you. - DVdm (talk) 21:12, 25 February 2011 (UTC)

Please do not add or change content without verifying it by citing reliable sources, as you did to Relativistic Doppler effect. Before making any potentially controversial edits, it is recommended that you discuss them first on the article's talk page. Please review the guidelines at Wikipedia:Citing sources and take this opportunity to add references to the article. Thank you. - DVdm (talk) 22:42, 25 February 2011 (UTC)

I am mystified by your behavior. The edit I've made, removing an unsourced statement, is not controversial as far as I know. Anyone can go to the so-called source for that statement and verify for themselves that no such statement is made. If you really believe that refraction is outside the domain of special relativity, you should have no trouble finding a reputable source for that statement. If you can find a source, I have no problem including that statement in the article. I just happen to think it unlikely that you can find such a source, because it would contradict the foundation of modern science.Cattlecall1 (talk) 23:28, 25 February 2011 (UTC)

Read wp:BURDEN. Also watch out for wp:3RR. You are gettting close. DVdm (talk) 23:50, 25 February 2011 (UTC)