User talk:

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Hello,, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay.

But I'm afraid that several people have challenged your change to the expansion chamber article. See Talk:Expansion chamber#Speed of sound, and if you feel that your contribution was correct, please reply to them there.

Here are a few links to pages you might find helpful:

Please remember to sign your messages on talk pages by typing four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{help me}} before the question. Again, welcome! Andrewa (talk) 16:28, 4 October 2013 (UTC)

September 2017[edit]

Information icon Hello, I'm Redgro. I noticed that you recently removed content from Grimsy, Ontario without adequately explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an accurate edit summary. If this was a mistake, don't worry; the removed content has been restored. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Redgro (talk) 12:12, 22 September 2017 (UTC)

Please do not add or significantly change content without citing verifiable and reliable sources, as you did with this edit to Hamilton, Ontario. 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. Home Lander (talk) 19:53, 22 September 2017 (UTC)

If this is a shared IP address, and you did not make the edits, consider creating an account for yourself or logging in with an existing account so you can avoid further irrelevant notices.

Please do not add unsourced or original content, as you did with this edit to Stouffville, Ontario. Doing so violates Wikipedia's verifiability policy. If you continue to do so, you will be blocked from editing Wikipedia. Home Lander (talk) 20:03, 22 September 2017 (UTC)