A low DC voltage is produced by the thermocouple when the two junctions are at different temperatures. This voltage is referred to as the thermoelectric voltage. This thermoelectric voltage is produced by the temperature gradient along the thermocouple wires.
Re: What's causes the electric shock type pain in a tooth Hi DM69. I'm not a dentist but I'm pretty sure its the erosion of your tooth exposing the pulp, I had the exact same feeling in my tooth before I had it extracted a month ago, so I feel your pain.
Carpal tunnel syndrome Carpal tunnel syndrome symptoms include burning or tingling in the hand and fingers, numbness, pain and more. Benign essential tremor Benign essential tremor can cause shaking of the hands and forearms and a quivering voice. Low blood sugar (hypoglycemia) Low blood sugar, or low glucose levels, causes shakiness, anxiety, clammy skin, irritability, hunger, and more.