Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Mgbe ọ nọ na G.E. n'oge Agha Worldwa nke Abụọ, ọ mepụtara magnetron maka radar jamming, nke dugara na mmepe nke oven microwave. Mgbe ọ na-amụ njirimara nke p-i-n diodes eji dị ka ndị na-agbanwe ike, Hall nwere nghọta dị mkpa, nke rụpụtara na ya na William Shockley na W. T. Gụọ, Jr., maka nyocha nke njikọta ụgbọelu na-abụghị radiative na semiconductors. Hall mepụtara laser semiconductor na 1962, mgbe ọ na-arụ ọrụ na General Electric na Schenectady, New York. N'afọ ndị 1970, ọrụ Hall lekwasịrị anya na fotovoltaics na sel anyanwụ. Ọ lara ezumike nká na 1987, ebe e nyere ya ikike ikikere US 43 n'oge ọrụ ya.  Ajụjụ: N'oge ọ lara ezumike nká, patent ole ka o nwere?
43 ihe