Biographies / Al-Khwarizmi
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Autor: anton 05 November 2010
Words: 517 | Pages: 3
Mohammed Ibn-Musa al-Khwarizmi was born was born about 790 AD near Baghdad. and died about 850 AD. He was known as a mathematician and astronomer who was a faculty member at the "House of Wisdom" established in Baghdad by Al-Mamun the Seventh Khaliph of Abbasid Empire. As a scholar at the House of Wisdom, al-Khwarizmi, directed and engaged in intellectual interests ranging from algebra and geometry to astronomy and the translation of Greek scientific manuscripts .
Introducing the Numeric Numbers:
Al-Khwarizmi wrote several books that played important roles in arithmetic and algebra. In his work, that based most probably on an Arabic translation of Brahmagupta (Indian Book) where he gave a full account of the Hindu numerals which was the first to explain the system with its digits 0,1,2,3,....,9 and decimal place value which was a fairly recent arrival from India. The new entry came to be known as that of al-Khwarizmi, ultimately the scheme of numeration making use of the Hindu numerals came to be called simply algorism or algorithm, a word that, originally derived from the name al-Khwarizmi, now means, more generally, any abnormal rule of procedure or operation.
His Great Book:
It was at the House of Wisdom that al-Khwarizmi wrote his dissertation al-Kitab al-mukhtasar fi hisab al-jabr wa'l-muqabala or "The Compendious Book on Calculation by Completion and Balancing" that was written in 830 AD. It dealt with "what is easiest and most useful". Considered as an elementary textbook of practical mathematics, the Al-jabr wa'l-muqabala began with a discussion of the algebra of first and second degree equations and moved on in its final two parts to the business of practical applications to questions on mensuration and legacies. This was the most important book al-Khwarizmi was known for.
Other Works of al-Khwarizmi:
Al-Khwarizmi is also responsible for developing trigonometric tables containing sine functions. They were later used to help form tangent functions. He also developed the calculus of two errors, which led him to the concept of differentiation. He was also an astronomer, and he wrote a dissertation on astronomy, and also a book on astronomical tables. It was not until his books on astronomy were translated into Latin that the West was introduced to these new scientific concepts. His work with geography also contributed a great deal to society. Al-Khwarizmi revised Ptolemy's views on geography. He had seventy geographers working under his leadership, and they produced the first map of the known world in 830 AD. Al-Khwarizmi also was the first to attempt to get a measurement of the volume and circumference of the earth. His book on geography was entitled "Kitab surat-al-Ard," which included maps. Al-Khwarizmi also did much work relative to time. He wrote works on clocks, astrolabes, and sundials (Solar Clock).
As can be seen al-Khwarizmi was a note-able mathematician along with an wealth of other attributes. He discovered new ways of solving quadratic equations with algebra while keeping the problems simple and easy to manipulate. Al-Khwarizmi's ways of working with quadratic equations were so popular that his book Al-Jabr was used as the principle mathematics book at European universities until the 16th century.
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