User talk:Hd krid

March 2019
Hello, I'm Horst Hof. I wanted to let you know that one or more of your recent contributions to Tyndall effect 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 Help Desk. Thanks. Horst Hof (talk) 07:06, 27 March 2019 (UTC)