title: Galileo's Dagger.
abstract: 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.
authors.affiliation: Department of Psychology, University of California-San Diego, La Jolla, USA sanstis@ucsd.edu.
authors.forename: Stuart
authors.initials: S
authors.lastname: Anstis
mesh_terms: D005197:Famous Persons; D049669:History, 16th Century; D049670:History, 17th Century; D055641:Mathematical Concepts; D010465:Perception; D011601:Psychophysics / Q000266:history*
keywords: Galileo; acuity; sensory substitution