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Time delay switch type GW1 MK2

1970-1980

Sun duration sensor, actinometer, by R & D Electronics, 1997

1997
Trophy awarded to the winners of the 2023 Queen Elizabeth Prize for Engineering, Andrew Blakers, Martin Green, Jianhua Zhao and Aihua Wang, for their work on PERC photovoltaic technology.

2023 Queen Elizabeth Prize for Engineering trophy

2023