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(brāl), in astronomy, a small asteroidasteroid,
or minor planet,
small body orbiting the sun. More than 300,000 asteroids have been identified and cataloged; more than a million are believed to exist in the main belt between Mars and Jupiter, with many more in the Kuiper belt
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 notable because it has the same atypical geologic composition as the larger asteroid VestaVesta
, in astronomy, the fourth asteroid to be discovered. It was found in 1807 by H. Olbers. It is the third largest asteroid in size, with a diameter of c.326 mi (525 km). Its average distance from the sun is 2.36 astronomical units, and the period of its orbit is 1,325 days.
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. In 1999 the space probe Deep Space 1 passed within 16 mi (26 km) of Braille's surface, the closest flyby ever of an asteroid. Braille measures only 1.3 mi (2.1 km) by 0.6 mi (1 km). Its orbit is highly elliptical; its periapsis, or closest point to the sun, being midway between earth and Mars, and its apoapsis, or furthest point from the sun, is more than three times further from the sun than the earth is. In addition, much of Braille's orbit is a considerable distance above or below the ecliptic, the plane in which the planets circle the sun. Because of its orbit and geologic composition, it has been suggested that Braille was torn from Vesta, which has a huge crater, as the result of Vesta's collision with another celestial body.
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A system of written communication for the blind in which letters are represented by raised dots over which the trained blind person moves the fingertips.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


Louis . 1809--52, French inventor, musician, and teacher of the blind, who himself was blind from the age of three and who devised the Braille system of raised writing
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


(human language)
/breyl/ (Often capitalised) A class of writing systems, intended for use by blind and low-vision users, which express glyphs as raised dots. Currently employed braille standards use eight dots per cell, where a cell is a glyph-space two dots across by four dots high; most glyphs use only the top six dots.

Braille was developed by Louis Braille (pronounced /looy bray/) in France in the 1820s. Braille systems for most languages can be fairly trivially converted to and from the usual script.

Braille has several totally coincidental parallels with digital computing: it is binary, it is based on groups of eight bits/dots and its development began in the 1820s, at the same time Charles Babbage proposed the Difference Engine.

Computers output Braille on braille displays and braille printers for hard copy.

British Royal National Institute for the Blind.
This article is provided by FOLDOC - Free Online Dictionary of Computing (
References in periodicals archive ?
The Braille system concept based on visually impaired people, in this people already used for voice based announcement system.
In this article was showed the developed of a device as a technological tool that is part of the range of Tiflotecnologias aimed at teaching literacy Braille system, in which a number of physical and functional characteristics were taken into account, that emerged from the study of projects done previously related to learning Braille.
He prefers the cassettes to the traditional Braille system of learning because cassettes last longer.
Students in the kindergarten programme are taught basic writing and reading using various technologies, such as the Braille system.
The Braille Authority of North America (BANA) recently concluded a two-year evaluation of the Nemeth Uniform Braille System (NUBS) and has published the complete results of the study on its web site; available: <www.
Supervisor of the band Abdullah Saad said the group started when Innocence Charity Association for the Blind held a course for teaching the blind how to play on various musical instruments, in addition to reading musical notes and Braille system.
The Braille system is a universal method that is widely used by visually impaired people to read and write, and is read from left to right.
The delegation also requested the SBP Governor to issue directives to issue different size currency notes with embossing value of notes in Braille system for the benefit of blind persons.
For their education and training we use the Braille system, patented by Luis Braille, as the Braille code, and it is still being used today as it was in 1834 (Hampshire, 1981).
The Braille System: Braille, a tactile reading and writing system for those with visual impairments, is named for Louis Braille who devised the system in 1821.
Using special tooling, Cortegra embosses the Braille in an uncontracted Braille system, which means the words are spelled out, instead of in a contracted or chain system, in which one character can represent an entire word.