User talk:2601:646:C402:9540:AD84:5456:E5A8:9C5B

April 2020
Hello, I'm GalaxyDog. I wanted to let you know that one or more of your recent contributions to Camera obscura have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. -- Galaxy Dog  (talk) 16:14, 21 April 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

Please refrain from making unconstructive edits to Wikipedia, as you did at Science in the medieval Islamic world. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Eostrix (talk) 16:26, 21 April 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.