User talk:50.117.147.120

April 2023
Hello, I'm Materialscientist. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Crookes tube—because it 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 or the Help desk. Thanks. Materialscientist (talk) 02:20, 11 April 2023 (UTC)

Notification: Blocked
 You have been blocked from editing for a period of 31 hours for Vandalism. Once the block has expired, you are welcome to make useful contributions. If you think there are good reasons why you should be unblocked, you may request an unblock by first reading the guide to appealing blocks, then adding  below. Materialscientist (talk) 02:20, 11 April 2023 (UTC)