User talk:73.48.81.145

Welcome!
Hello, 73.48.81.145, and welcome to Wikipedia! I hope you like the place and decide to stay. Here are some pages you might find helpful:
 * Introduction
 * The five pillars of Wikipedia
 * How to edit a page
 * How to write a great article
 * Simplified Manual of Style
 * Your first article
 * Discover what's going on in the Wikimedia community
 * Feel free to make test edits in the sandbox
 * and check out the Task Center, for ideas about what to work on.

I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes ( ~ ); this will automatically produce your name and the date. If you need help, please see our help pages, and if you can't find what you are looking for there, please feel free to ask me on my talk page or place  on this page and someone will drop by to help. Again, welcome! Mpc60ii (talk) 16:33, 15 March 2021 (UTC)

April 2021
Please refrain from making test edits in Wikipedia pages, such as those you made to Christiaan Huygens, even if you intend to fix them later. Your edits have been reverted. If you would like to experiment again, please use the sandbox. Thank you. Dr Aaij (talk) 16:35, 12 April 2021 (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.

June 2021
Hello, I'm Roller26. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Treatise on Light—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 Help desk. Thanks. Roller26 (talk) 23:44, 31 May 2021 (UTC)

June 2022
Welcome to Wikipedia. We appreciate your contributions, but in one of your recent edits to Christiaan Huygens, it appears that you have added original research, which is against Wikipedia's policies. Original research refers to material—such as facts, allegations, ideas, and personal experiences—for which no reliable, published sources exist; it also encompasses combining published sources in a way to imply something that none of them explicitly say. Please be prepared to cite a reliable source for all of your contributions. You can have a look at the tutorial on citing sources. Thank you. Adakiko (talk) 06:05, 11 June 2022 (UTC)