This applet design by prof Hwang, Modified layout by Ahmed.
Original applet [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2028.0]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 http://www.phy.ntnu.edu.tw/ 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