User talk:2402:8100:39A6:2CDA:601B:574A:816A:1C01

Welcome
Hello, and welcome to Wikipedia!

Someone using this IP address, 2402:8100:39A6:2CDA:601B:574A:816A:1C01, made test edits on the page Optics which have been reverted or removed. If you did this, please use the sandbox for any other tests you may want to do. If 2402:8100:39A6:2CDA:601B:574A:816A:1C01 is a shared IP address and you did not do this, you may wish to consider [ getting a username] to avoid confusion with other editors and further irrelevant notices.

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 * Tips on starting your first article
 * Help pages • Tips
 * Tutorial

Here are some other hints and tips:
 * I recommend that you get a username. You do not have to log in to read or edit articles on Wikipedia, but  [ creating an account]  is quick, free and non-intrusive, requires no personal information, and there are many benefits of having a username. (If you edit without a username, your IP address is used to identify you instead.)
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I hope you enjoy editing here and being a Wikipedian! If you need help, check out Questions, ask me on my talk page, or type  here on  talk page and someone will show up shortly to answer your questions. Again, welcome! KNHaw  (talk)  18:41, 11 September 2019 (UTC)