var fDesc=new Array(); fDesc[0] = "RadiationLab is an interactive simulation of a radioactivity experiment. It is suitable for use at KS4 and above. It can be used for either teacher demonstration or student investigations, for teaching both radiation physics and data analysis.

RadiationLab was originally designed for use as a university level teaching aid and thus the model it contains is very detailed, taking into account a large number of variables. The results it produces have also been verified by experiment to be highly realistic."; 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 = ''; } }