I knew of this phenomena prior to , though prior to an e-mail amazon sent me I was unaware of what physicists called it. I have a question regarding the proton demonstration in this clip. Is it possible the electroweak force is acting on the 'tunneling' proton? If, as the commentator is suggesting the proton is imbued (momentarily) with enough energy to circumvent the strong force, where is the additional energy coming from? are there test which pinpoint the energy source and could someone provide a link. also one last question. I remember reading somewhere that it would take vast sums of energy to overcome the strong force, how is a proton or any subatomic particle able to use the extra energy to perform this feat? I understand the rules that govern the quantum world are different to those which govern ours, but conceptually I find it hard to fathom how a proton might process the additional energy.