(And this, in turn, connected to…)pic.twitter.com/Ix5KT3J4zu
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I found a bit more in that book: https://twitter.com/mwichary/status/1077330017984475137 … I’ve seen lights on fingers in other places, but not sure if they were named that.
Here’s a book called “Motion study for the handicapped” from 1920:pic.twitter.com/8ISTc1P1mx
(I don’t think I fully understand the difference between cyclegraph, chronocyclegraph, and kine-cyclegraph, if there is any: http://we-make-money-not-art.com/the_chronocyclegraph/ …)
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