[Jobaka]

Originally Posted by mrvette

Never heard of heat being absorbed through anything electrical, let alone any 'connection'....WTF?? power/current/voltage is dropped through any connection, and heat given off, but absorbed???

some sort of contacts/plates touching the lo neck/higher back location that stimulate the nerves into feeling cold....is best I can imagine.....

anyone??

Peltier effect, the cooling of one junction and the heating of the other when electric current is maintained in a circuit of material consisting of two dissimilar conductors; the effect is even stronger in circuits containing dissimilar semiconductors. In a circuit consisting of a battery joined by two pieces of copper wire to a length of bismuth wire, a temperature rise occurs at the junction where the current passes from copper to bismuth, and a temperature drop occurs at the junction where the current passes from bismuth to copper. This effect was discovered in 1834 by the French physicist Jean-Charles-Athanase Peltier.

https://www.britannica.com/science/Peltier-effect