Magnet Yagerageje Gukoresha Mubushinwa bwa kera

Ibikoresho byo kwinjiza ibyuma bya magnetite byavumbuwe kuva kera. Mu bitabo icyenda bya Lu's spring and Autumn Annals, hari umugani: "niba ugize neza bihagije gukurura ibyuma, ushobora kubiganiraho." Muri kiriya gihe, abantu bitaga "magnetism" nk "" ineza ". Babonaga rukuruzi ikurura ibyuma nkibikurura nyina kubana be. Yibwira ati: "ibuye ni nyina w'icyuma, ariko hariho ubwoko bubiri bw'amabuye: ibuye ryuje urukundo rishobora gukurura abana be, ariko ibuye ridashima ntirishobora." Mbere y'ingoma ya Han, abantu banditse "Ci Shi", bisobanura gukunda ibuye.

Kubera ko magnetite ishobora gukurura ibyuma, irashobora no gukurura ibindi byuma? Abakurambere bacu bagerageje inshuro nyinshi, basanga magnesi zidashobora gukurura zahabu, ifeza, umuringa nibindi byuma gusa, ariko nanone amatafari n'amatafari. Mu ngoma y’iburengerazuba bwa Han, abantu bari bamaze kubona ko magnetite ishobora gukurura ibyuma gusa, kuruta ibindi. Iyo magnesi ebyiri zishyizwe hafi yazo, rimwe na rimwe zikururana rimwe na rimwe zikanga. Birazwi ko magnesi zifite inkingi ebyiri, imwe yitwa N pole indi ni S pole. Nka nkingi isubiza inyuma, inkingi zinyuranye zikururana. Abantu bariho icyo gihe ntibari bazi uku kuri, ariko barashobora kugimenya.

Mu ngoma y’iburengerazuba ya Han, hari alchemiste witwa Luan da. Yakoze ibice bibiri bya chess nkibintu ahindura polarite yibice byombi. Rimwe na rimwe, ibice byombi byarebaga hamwe, kandi rimwe na rimwe byasubiranamo. Luan Da yise "Dou Qi". Yagejeje igitabo ku Mwami w'abami Wu w'ingoma ya Han maze abigaragaza aho. Umwami w'abami Wu w'ingoma ya Han yaratangaye, Longxin yishimira cyane ko Luan yahawe izina rya "Jenerali wa Wuli". Luan Da yakoresheje imiterere ya rukuruzi akora ibintu bishya kugirango abeshye Umwami Wu w'ingoma ya Han.

Isi nayo ni rukuruzi nini. Inkingi zayo ebyiri ziri hafi ya geografiya yepfo na geografiya ya ruguru. Kubwibyo, mugihe magnesi ziri hejuru yisi zishobora kuzunguruka mubwisanzure, zizasubirana hamwe na magneti amwe, kandi zikurura magnesi hamwe nibikoresho bitandukanye, byerekana amajyaruguru namajyepfo. Abakera ntibasobanukiwe uku kuri, ariko basobanutse neza kubintu nkibi.