Hiki i ke kiʻi hoʻomehana pāhana mana ke hana maʻamau i ka hana maʻamau i ke kaiapuni haʻahaʻa haʻahaʻa.ʻO ke kiʻi hoʻomehana uila mana ka hoʻohana ʻana i ka hopena electrothermal, ʻo ia hoʻi, ka mea metala conductive i hoʻopili ʻia i ka mea insulating, a laila uhi ʻia me kahi ʻāpana o ka insulating mea ma luna o ka ʻili o ka papa metala, ua paʻa paʻa ka papa metala i loko, e hana ana. he pepa lahilahi o ke kii conductive.