Showing posts tagged history of science
“Then Professor Darlington tossed frogs off the roof, one by one.”
George Mayerle’s eye chart featuring characters in English, Chinese, Japanese and Russian, as well as symbols for children or illiterate adults, 1907 (via The Verge)
"Across the bottom, boxes test for color vision, a feature intended especially (according to one advertisement) for those working on railroads and steamboats." Read all about it.