[quote author=ahmedelshfie link=topic=2340.msg8770#msg8770 date=1322212834]
milad did you check the optics ejs applet you can find at [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?board=12.0]Optics[/url] have examples for many prism, may you check.
[/quote]

nothing was there!