I would like to use the wasysym package to get access to characters such as lightning and clock. However, the following MWE for me gives different symbols.
\documentclass{article}
\usepackage{wasysym}
\begin{document}
$\lightning\clock$
\end{document}
This results in the following when I run pdflatex on it.

That is, lightning is instead rendered to a backtick and clock is instead rendered to a 0.
I have TeXLive 2012 on Ubuntu 12.04 and the same shows up when using Evince or Okular to view. I do not know if this is a problem with my LaTeX code or with my TeX installation or some encoding problem particular to my machine.

amsmath(beforewasysym)and enclose it in a\text{}macro, e.g.$x^{\text{\lightning}}$– Scott H. Nov 02 '12 at 01:48amsmathand use\text; a simple\mboxis enough:$\mbox{\lightning}$. – Gonzalo Medina Nov 02 '12 at 01:55\lightningis wanted at full size (yech!),amsmathand\textare more appropriate than\mbox. – barbara beeton Nov 02 '12 at 13:46\mboxsince the OP didn't mention the use as super/subscript; (the comment that mentions the use as superscript is not from the OP). – Gonzalo Medina Nov 02 '12 at 13:55