Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Duk da yake a GE a lokacin Yaƙin Duniya na II, ya haɓaka magnetron don katsewar radar, wanda ya haifar da ci gaban murhun microwave.Yayin da yake nazarin halayen p-i-n diodes da aka yi amfani da su azaman masu daidaita wutar lantarki, Hall yana da mahimmancin fahimta, wanda ya haifar da haɗin gwiwa tare da William Shockley da W. T. Karanta, Jr., don nazarin sake haɗuwa da jigilar jigilar jigilar kayayyaki a cikin semiconductors. Hall ya kirkiro laser na semiconductor a shekarar 1962, yayin da yake aiki a General Electric a Schenectady, New York. A cikin 1970s, aikin Hall ya mai da hankali kan photovoltaics da ƙwayoyin hasken rana. Ya yi ritaya a 1987, bayan da aka ba shi takardun shaida 43 na Amurka a lokacin aikinsa.  Tambaya: Da yawa takardun shaida ya yi a lokacin da ya yi ritaya?
43 da kuma