Galileo found that fine lines on a balance scale dazzled his eyes and were unreadable. So he used a grid of fine wires instead and ran his dagger across it, counting the number of auditory clicks. This is the first known experiment on sensory substitution.
Bach-y-RitaP. (2004) Tactile sensory substitution studies. Annals of New York Academic Sciences1013: 83–91.
3.
GalileoG. (1586) La Bilancetta. English translation from: Laura Fermi and Gilberto Bernardini (1961) Galileo and the Scientific Revolution, New York, NY: Basic Books, Inc. (Republished by Dover Publications, 2003, ISBN: 0486432262.).
