Czech scientist Jan Evangelista Purkinje’s drawings of the shapes made from pushing on his closed eye
Czech scientist Jan Evangelista Purknye‘s (1787-1869) made drawings of the shapes “seen” from pushing on his closed eye. He was a proponent of self-experimentation who tested over fifty dangerous drugs on himself, and took to his eye pushing research with abandon: “When I close my eyes, they begin to shine, just like the dots and […]