Reaction at CATHODE: 1  H+H+ and Cu2+Cu2+ ions are attracted to the cathode. 2  Cu2+Cu2+ ions are preferentially discharged as Cu2+Cu2+ is lower in the electrochemical series than H+H+. 3  Each Cu2+Cu2+ ion gains two electrons from the cathode to form one copper atom.
One of the most well known spine cranks is the boston crab, which is usually depicted in pro-wrestling context. Similarly to neck cranks, spine cranks are illegal techniques in most combat sports, excluding some submission wrestling and mixed martial arts competitions, where they are used as submission holds.
Boston crab. Chris Jericho with his Walls of Jericho (Elevated Boston crab) on Shawn Michaels. The Boston crab is a professional wrestling hold that typically starts with one wrestler lying in a supine position on the mat, with the other wrestler standing and facing him. It is a type of spinal lock where the wrestler hooks each of the opponentâs legs in one of his arms, and then turns the opponent face-down, stepping over him in the process.