object in front of concave/convex lens

[Fu-Kwun Hwang]

Registed user can get files related to this applet for offline access.
Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
If java program did not show up, please download and install latest Java RUN TIME

The circle represent the object.
You can drag any point in the circle to change it's shape.

You can change the focus length f with slider or drag focus point direcly.
This applet assume very thin lens.

Registed user can get files related to this applet for offline access.
Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
If java program did not show up, please download and install latest Java RUN TIME

[lookang]

strange it didn't load on my mac.

your forum is so beautiful now with the thumbnail of the applets!

could you have miss out something while converting your php codes? i am guessing 

[lookang]

it works now.