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A beautiful and motivating story about the friendship of two remarkable women: Hertha Ayrton, a British engineer and inventor who (among other things) designed the Ayrton fan used in World War I to dispel poisonous gases from the trenches; and Marie Curie, winner of two Nobel Prizes, inventor of portable X-ray equipment and driver of these mobile radiography units called petites Curies near the front lines in World War I.
(not in database ☹️)