trying the make a 2 magnet model.
1. working from an earlier model i remixed into http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1582.0
2. removed some stuff
3 added the ability to Lon and Ron thanks to Prof Hwang's code http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1602.msg6216#msg6216
4 added a scale on the right side of the applet for aid visualization
5 change the number of xField and yField to 41 instead to allow a zoom of 2
6 got the BField to work correctly by adding Prof Hwang's code http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1602.msg6216#msg6216
7 adding the |B| , Bx , By, angle to the display
8 debugging to get it to work beautifully
getting getB to work for inside the magnets which i conceptualize to saturate to 225 arbitrarily following the Phet numbers
still the applet will hang when the compass moves on drag.
the compass reading, inside magnet, decide whether overlap magnets how?