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.
Sensitivity. Sensitivity can occur when the underlying layer of your teeth becomes exposed as a result of receding gum tissue. The roots of your teeth, which are not covered by protective hard enamel, contain thousands of tiny tubules leading to the tooth's nerve center (the pulp).When exposed, these tubules allow stimuli â such as hot or cold food â to stimulate the nerve in your tooth, causing the pain you feel.he roots of your teeth, which are not covered by protective hard enamel, contain thousands of tiny tubules leading to the tooth's nerve center (the pulp). When exposed, these tubules allow stimuli â such as hot or cold food â to stimulate the nerve in your tooth, causing the pain you feel.