%0 Book %A Robert Clayton %A Joan Algar %T The GEC Research Laboratories 1919-1984 %D 1989 %I Institution of Engineering and Technology %S History of Technology %K heating %K phospor %K cathode-ray tube %K photometry %K lighting %K semiconductor material %K optoelectronic %K lamp %K material characterisation %K metallurgy %K refractory %K laser %K passive component %K semiconductor device %U https://digital-library.theiet.org/;jsessionid=3m3vph5ixh81.x-iet-live-01content/books/ht/pbht010e