var fDesc=new Array(); fDesc[0] = "MyPhysicsLab provides several interactive physics simulations such as springs and masses, pendulums, molecules. Objects, mass, gravity, spring stiffness can be modified.

These physics simulations can be used to:

-play around with for fun... try dragging with your mouse, or changing parameter settings
-learn about physics and how to set up a model of a physical system
-learn about numerical methods for solving equations
-learn about differential equations and techniques for solving them
-learn computer programming (free source code is available)
-enhance your next video game project"; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }