invisible in motion photography

eadweard muybridge - sequenced image of a rotating sulky wheel with muybridge climbing steps - ca. 1887

steven pippin - laundromat - locomotion - walking without trousers - man no. l1999.322 - 1999

image one - found in helios: eadweard muybridge in a time of change - steidl - 2010
coming to the sfmoma
image two - thinking back to pippin's show at the sfmoma some years ago
(muybridge invented the washing machine?)