For a simulation, the scale/unit of physics properties is not fixed.
e.g. the screen width can represent 1cm or 1km. It is depends on how you choose the unit.

I did add several sliders for user to adjust related parameters.

Could you provide a simple drawing about the ruler? and what is the role for the ruler?

Click the eye (image) to display the simulation

/htdocs/ntnujava/ejsuser/2/users/ntnu/fkh/changeGaussianField2_pkg/changeGaussianField2.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(1048.4kB):double click downloaded file to run it. , Download EJS source View EJS source