It's my first time here, so I'm not sure if this is the right place to post it. If I post it in the wrong section, then I'm sorry. Anyways, I just have a curious question. Based on this video I watched --> "" at around 1:40:42 , I really want to know how she actually calculated the amount of energy lost during the nuclear fission of the uranium atom by using E=mc^2. I'm just curious that's all because the video doesn't show the actual calculation. So, if one of you guys can show the process of the mathematics, that would be great! Thx!