Ua ho'āʻo ʻia ʻo Magnet e hoʻohana ma Kina Kahiko

Ua ʻike ʻia ka waiwai absorption hao o ka magnetite no ka manawa lōʻihi. Ma nā puke ʻeiwa o Lu's spring and Autumn Annals, aia kahi ʻōlelo: "inā ʻoluʻolu ʻoe e huki i ka hao, hiki iā ʻoe ke alakaʻi iā ia." I kēlā manawa, kapa ka poʻe i ka "magnetism" ma ke ʻano he "aloha". Ua manaʻo lākou he mea hoʻohihi ka makuahine i kāna mau keiki. Manaʻo ʻo ia: "ʻO ka pōhaku ka makuahine o ka hao, akā ʻelua ʻano pōhaku: hiki i ka pōhaku aloha ke huki i kāna mau keiki, akā ʻaʻole hiki i ka pōhaku mahalo ʻole." Ma mua o ka Han Dynasty, kākau nā kānaka iā "Ci Shi", ʻo ia hoʻi ka pōhaku aloha.

No ka mea hiki i ka magnetite ke huki i ka hao, hiki anei iā ia ke huki i nā metala ʻē aʻe? Ua hoʻāʻo nui ko mākou mau kūpuna, a ʻike ʻia ʻaʻole hiki i nā mea magnet ke huki wale i ke gula, ke kālā, ke keleawe a me nā metala ʻē aʻe, akā i nā pōhaku lepo a me nā tile. I ka Western Han Dynasty, ua ʻike mua ka poʻe i ka magnetite hiki ke huki wale i ka hao, ma mua o nā mea ʻē aʻe. Ke hoʻokomo ʻia nā magnet ʻelua i kahi kokoke i kekahi, i kekahi manawa ua huki lākou i kekahi i kekahi a i kekahi manawa hoʻihoʻi kekahi i kekahi. Ua ʻike ʻia he ʻelua mau pou o ka magnet, kapa ʻia kekahi pole N a ʻo kekahi pole S. E like me ka hoʻokuke ʻana o kekahi i kekahi, ʻo nā pou kūʻē e huki kekahi i kekahi. ʻAʻole ʻike ka poʻe i kēlā manawa i kēia ʻoiaʻiʻo, akā hiki iā lākou ke ʻike.

I ka moʻokūʻauhau Han Komohana, aia kekahi mea alchemist i kapa ʻia ʻo Luan da. Ua hana ʻo ia i ʻelua ʻāpana chess e like me nā mea ma ka hoʻoponopono ʻana i ka polarity o nā ʻāpana ʻelua. I kekahi manawa ua huki nā ʻāpana ʻelua i kekahi i kekahi, a i kekahi manawa hoʻihoʻi kekahi i kekahi. Ua kapa ʻia ʻo Luan Da ʻo "Dou Qi". Ua hōʻike ʻo ia i ka moʻolelo iā Emperor Wu o ka Han Dynasty a hōʻike ʻia ma ia wahi. Ua pihoihoi ka Emepera Wu o ka moʻokūʻauhau Han, a ua hauʻoli loa ʻo Longxin i ka loaʻa ʻana o Luan i ka inoa ʻo "General of Wuli". Ua hoʻohana ʻo Luan Da i ke ʻano o ka magnet e hana i nā mea hou e hoʻopunipuni ai iā Emperor Wu o ka Han Dynasty.

He magnet nui ka honua. Kokoke kona mau kia i ka pole Hema a me ka pole Akau. No laila, i ka wā e hiki ai i nā mākēneki ma luna o ka ili o ka honua ke kaʻa ʻole, e hoʻokuke lākou kekahi i kekahi me nā mea like ʻole, a e huki i nā mea magnet me nā mea like ʻole, e hōʻike ana i ka ʻākau a me ka hema. ʻAʻole maopopo i ka poʻe kahiko i kēia ʻoiaʻiʻo, akā maopopo loa lākou i kēia ʻano mea.