Tan iyo 1958, wadarta mugga iibka ee Thunder, astaanta hillaaca dahaarka dhalada ayaa dhaaftay 100 milyan oo xabbo, oo ka dhigan kala badh dalka iyo mid lixaad ee adduunka ah.
Insulator-ku wuxuu ka kooban yahay dabool bir ah, qaybo dhalo ah oo adag iyo biin birta ah, kuwaas oo lagu daray koollada sibidhka.Ka hor inta aan la isku keenin, dusha sare ee birta birta ah ayaa la bixiyaa gaas jilicsan, godka gudaha ee daboolka birta iyo pinku wuxuu ku dhamaanayaa barta xiriirka leh ee xabagta sibidhka ayaa lagu daboolay daamur.Gaaska iyo daamurka ayaa loo isticmaalaa in lagu dhufto haddii ay dhacdo dhaawac marka insulator-ku uu soo wajahan yahay balaadhinta kulaylka iyo foosha.Qaybaha dhalooyinka adag ayaa loo isticmaalaa in lagu daboolo.
Insulators muraayaddu waxay leeyihiin sifooyin cabbir yar, miisaan fudud, eber-qiimaha is-jebinta, iyo ogaanshaha fudud;xoogga farsamada sare;iska caabin wanaagsan;waxqabadka is-nadiifinta wanaagsan mana fududa da'da.Intaa waxaa dheer, qalabka wax lagu buufiyo ayaa leh faa'iidooyinka hydrophobicity xooggan, caabbinta muddada-dheer ee wasakhowga, qulqulka hooseeya ee dusha sare, iyo dayactir la'aan inta lagu jiro hawlgalka;waxaa si weyn looga isticmaalaa wareegyada kala duwan ee gudaha iyo dibadda.
Dahaarka dhalooyinka ka joojinta Disk waxa loo qaybiyaa Nooca caadiga ah, Nooca Ka-hortagga wasakhowga, Nooca DC, Nooca Aerodynamic, Nooca feeraha ka baxsan iyo Nooca Siliga Dhulka.
