Braille, Louis, 1809?–1852, French inventor of the Braille system of printing and writing for the blind. Having become blind from an accident at the age of 3, he was admitted at 10 to the Inst...

North College Hill, city (1990 pop. 11,002), Hamilton co., SW Ohio, a suburb of Cincinnati; inc. as a city 1940. It is mostly residential. The Clovernook Center for the Blind there has a brail...

Tatum, Art, 1910–56, American jazz pianist, b. Toledo, Ohio. Born with cataracts in both eyes, Tatum remained virtually blind for life. He read music in Braille, but his sensitive ear for musi...

Rodrigo, Joaquín, 1902–99, Spanish composer, b. Sagunto, Valencia. He lost his sight as a child and wrote his music in Braille. After his musical talent was recognized, Rodrigo studied in Pari...

, 1501–76, Italian physician and mathematician. His works on arithmetic and algebra established his reputation. Barred from official status as a physician because of his illegitimate birth, he...

Touch, tactile sensation received by the skin, enabling the organism to detect objects or substances in contact with the body. End organs (nerve endings) in the skin convey the impression to t...

Vesta, in astronomy, fourth asteroid to be discovered. It was found in 1807 by H. Olbers. It is the third largest asteroid, with a diameter of c.326 mi (525 km). Its average distance from the ...

Asteroid, planetoid, or minor planet, small body orbiting the sun. More than 10,000 asteroids have orbits sufficiently well known to have been cataloged and named; thousands more exist. Most a...