HANK MORGAN / SCIENCE PHOTO LIBRARY HANK MORGAN / SCIENCE PHOTO LIBRARY
Control room of a power station. Technicians in the control room of a power station. The control panels monitor the electricity-generating equipment at the power station. Bright lights have been installed to produce maximum alertness in the technicians during night shifts. Bright light affects the human biological (circadian) clock; using this trigger the awake and sleep pattern of workers can be synchronised to their working activities.
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