It was 1913 Frank Gilbreth & Lillian Gilbreth invented the Chronocyclegraph. It used small lights attached to hands & arms of manufacturing & clerical workers with an open shutter camera to track the motion. The work simplification photographs were astonishing & insightful.pic.twitter.com/7sDFq4I3vU
7:25 PM - 30 Nov 2019
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