There has always been a strong underlying physics research programme in the work of the Laboratories. This is evidenced from the 1920s onwards by the list of papers published (particularly the numbered communications) which complement the reports from the Laboratories to GEC units, GEC Head Office, and outside organisations for whom they were undertaking work. In the pre-war era this work was mostly associated with gas discharges for light-emittng devices and with thermionic valves. The physics programme was particularly strong again in the post-war period. Much of it was associated with valve and semiconductor research, but it is sufficiently important to merit a self-contained account. Inevitably there are some cross-references to Chapter 8 (Semiconductor Materials and Devices) and to Chapter 5 (Valves).
Physics, mostly solid state, in the post-war period, Page 1 of 2
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