How to Ask
Is your question about physics?
We prefer questions that can be answered, not just discussed.
Provide details. Share your research.
If your question is about this website, ask it on meta instead.
How to Format
► put returns between paragraphs
► for linebreak add 2 spaces at end
► _italic_ or **bold**
► quote by placing > at start of line
► to make links
<http://foo.com>
[foo](http://foo.com)
<a href="http://foo.com">foo</a>
► basic HTML also allowed
► MathJaX equations $\sin^2 \theta$
How to Tag
A tag is a keyword or label that categorizes your question with other, similar questions.
► favor existing popular tags; avoid creating new tags
► use common abbreviations
► don't include synonyms
► combine multiple words into single-words with dashes
► maximum of 5 tags, 25 chars per tag
► tag characters: [a-z 0-9 + # - .]
► delimit tags by space, semicolon, or comma
