User talk:

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Hi. I reversed your edit to Ray (optics). It is conventional to present vectors in (roman) boldface, and scalar variables in italics. The variables you changed to italics were vectors, not scalars.--Srleffler 03:52, 13 November 2007 (UTC)


Hello, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few good links for newcomers:

You are welcome to continue editing articles without logging in, but you may wish to create an account. Doing so is free, requires no personal information, and provides several benefits. For one thing, if you edit without a username, your IP address ( is used to identify you instead.

In any case, I hope you enjoy editing here and being a Wikipedian! Please sign your comments on talk pages using four tildes (~~~~); this will automatically produce your IP address (or username if you're logged in) and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question and then place {{helpme}} before the question on your talk page. Again, welcome! --Srleffler (talk) 06:30, 29 November 2007 (UTC)


I raised some concerns about your recent edit to Ray (optics). The discussion is on Talk:Ray (optics).--Srleffler (talk) 06:30, 29 November 2007 (UTC)