bug fixed! redraw using AnalyticCurve
X= "xsource+(x-xsource)*cs-0.1*A1*Math.cos(omega*t-k*(x-xsource))*sc"
Y ="ysource+(x-xsource)*sc+0.1*A1*Math.cos(omega*t-k*(x-xsource))*cs"
the using new feature with new wave form to allow counting of number of wavelength with RVHS tat leong in ripple tank sim plus some bug fixes. made dt smaller 0.01 for smooth graph
http://weelookang.blogspot.sg/2013/03/ripple-tank-model-wee-duffy.html
Ripple Tank Model (Wee, Duffy, Aguirregabiria, Hwang & Lee, 2012) with simplified physics equations modeled, realistic 2D and 3D (shown) visualizations, hints and scientific measurement tools for inquiry activities and data gathering for inquiry learning
https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejs_Ripple_Tank_Interferencewee10.jar
older version  working https://dl.dropbox.com/u/44365627/lookangEJSworkspace/export/ejs_Ripple_Tank_Interferencewee07try.jar
worksheets by (lead) IJC: https://www.dropbox.com/s/ssfismpu1683l3k/RippleTankIJC.zip
IJC: https://www.dropbox.com/s/dyvzrhuhzecxx7c/RippleTankIJC2013.docx
RVHS: https://www.dropbox.com/s/pnbi0k6ww1zcmv8/RippleTankRVHS.zip
YJC: https://www.dropbox.com/s/khlnwerjoienknh/RippleTankYJC.zip