علاء البصري
02-18-2014, 12:32 PM
السلام عليكم ................
http://glencoe.com/sec/science/physics/ppp_09/animation/Chapter%2026/Thomsons%20Experiment%20with%20Elec trons.swf
http://glencoe.com/sec/science/physics/ppp_09/animation/Chapter%2026/Thomsons%20Experiment%20with%20Elec trons.swf