Thank you for your translations. Those files are uploaded to our server as [url=http://www.phy.ntnu.edu.tw/oldjava/turkey/]Turkey version[/url].
If you can add more, I will put them all on the web.
The above translations can be [url=http://www.phy.ntnu.edu.tw/oldjava/turkey/optik.zip]download from our server[/url],too.

All the simulations created with EJS use the same library (under directory: _library/).
<applet code="thinlensintensity.thinlensintensityApplet.class" archive="_library/ejsBasic.jar,thinlensintensity.jar" name="thinlensintensity"  id="thinlensintensity" width="616" height="361"></applet>
If you move all the files in "[b]_library/[/b]" one level up (then you do not need to have so many copy of _library/ files).
But you need to change [b]archive[/b] property in the web page: For example: the above applet tag should be changed to
<applet code="thinlensintensity.thinlensintensityApplet.class" archive="[b]../[/b]_library/ejsBasic.jar,thinlensintensity.jar" name="thinlensintensity"  id="thinlensintensity" width="616" height="361"></applet>

What you need to do is add [b]../[/b] in front of all the [b]_library/[/b] .
And the applet will still work! You can check out the above ZIP file(I already did that for thinlineintensity.htm and kirilma_dalga_metodu.html !)