User talk:209.205.104.199

Welcome!
Hello! I noticed your contributions to Relativistic Doppler effect&#32;and wanted to welcome you to the Wikipedia community. I hope you like it here and decide to stay. You are welcome to edit anonymously; however, creating an account is free and has several benefits (for example, the ability to create pages, upload media and edit without one's IP address being visible to the public).

As you get started, you may find this short tutorial helpful:

Alternatively, the contributing to Wikipedia page covers the same topics.

If you have any questions, we have a friendly space where experienced editors can help you here:

If you are not sure where to help out, you can find a task here:

Please remember to sign your messages on talk pages by typing four tildes ( ~ ); this will automatically insert your username and the date.

Happy editing! Wesoree (talk) 16:08, 2 May 2022 (UTC)