Waya mai zafi, wacce kuma aka sani da wayar dumama, a takaice, layin wuta ne da ke amfani da tasirin Seebeck na kwararar wutar lantarki don samar da zafi lokacin da aka samu kuzari. Yawancin nau'ikan , a cikin babban ilimin kimiyyar lissafi da ake kira waya juriya, waya mai dumama. A cewar ma'aunin madugun lantarki na...
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