April 2016[change source]

Welcome to Wikipedia. Everyone is welcome to make useful changes to Wikipedia. However, at least one of your changes, such as the one you made to "Electrical conductivity", did not seem to be helpful and has been automatically reverted by ChenzwBot. If you want to try out changing Wikipedia to learn more about how it works, please use the sandbox. Thank you.

If you believe there has been a mistake, please report it here and then remove this warning. --ChenzwBot (talk · contribs) 21:36, 4 April 2016 (UTC)[reply]

September 2022[change source]

Please do not make unhelpful changes to Wikipedia, like you did to Infrared. The changes you made seem to be vandalism and have been reverted or removed. If you want to try changing Wikipedia to learn more about how it works, please use the sandbox. Thank you. — *Fehufangą✉ Talk page 21:41, 8 September 2022 (UTC)[reply]

If this is a shared IP address, and you didn't make the change, consider creating an account so you won't get notices that are not for you.

March 2023[change source]

Welcome to Wikipedia. A page you made may not meet our rules for new pages, so it will shortly be removed. Please use the sandbox for any tests. You may also want to read our introduction page to learn more about changing. Thank you. --IWI (talk) 22:14, 1 March 2023 (UTC)[reply]

If this is a shared IP address, and you didn't make the change, consider creating an account so you won't get notices that are not for you.