INGANCIN TAFIYA an fara lura da shi lokacin da aka gano cewa ana samar da zafi ne a cikin canji da kuma iska, kamar yadda aka ambata a cikin sura ta "Harkokin Jinya na Karfe" a cikin wannan littafin. Dangane da haka, an yi nazarin ka'idar induction dumama saboda a iya gina matukan jirgi da masu kawo canji don cikakken inganci ta hanyar rage asarar dumama. Haɓaka ƙarfin ƙarfin induction na saurin kuzari ya ba da wata hanyar yin amfani da dumama dumama don taƙara jijiya. Amfani da farkon shigowa ya ƙunshi fitina da kuskure tare da samun ingantaccen ilimin ƙayyadaddu
aikace-aikace, amma rashin fahimtar shigowa dumama ka'idodi. A cikin shekarun nan an fadada fahimtar mahimman ka'idoji, yana faɗaɗa a halin yanzu cikin samfurin kwamfuta na aikace-aikacen dumama da tsari. Sanin waɗannan ka'idoji na yau da kullun game da dumama wuta yana taimakawa fahimtar aikace-aikacen dumama kamar yadda ake amfani dashi don magance zafi mai shiga ciki. Heatingarfin zafin jiki yana faruwa ne saboda filayen ƙarfin electromagnetic yana samar da wutar lantarki a cikin wani ɓangare. Sassan suna zafin saboda juriya zuwa kwararar wannan wutar lantarki… ..
