This applet design by prof Hwang, Modified layout by Ahmed.
Original applet [url=]illusion_Hering effect[/url]

Do you see two parallel lines?
Click check box: No bg or A/B to find out the differences.

/htdocs/ntnujava/ejsuser/37048/users/egy/ahmed/illusion_hering_pkg/illusion_hering.propertiesFull screen applet or Problem viewing java?Add to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
Download EJS jar file(688.6kB):double click downloaded file to run it. (6 times by 4 users) , Download EJS source View EJS source