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   Jamshīd al-Kāshī

   Al-Kashi invented the Plate of Conjunctions, an analog... ... Al-Kashi also invented a mechanical planetary computer which he called...
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   Astronomy in medieval Islam

   Abu Rayhan Biruni also invented the first mechanical lunisolar calendar computer which employed a gear train and eight gear-wheels. ... In the 15th century, al-Kashi invented the Plate of Conjunctions, a computing instrument used to determine the time of day at which planetary conjunctions will occur, and for performing linear interpolation.
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   Timeline of science and engineering in the Islamic world

   He also invents a geared mechanical lunisolar calendar analog computer with a gear train and eight gear-wheels. ... ↑ E. S. Kennedy (1947), "Al-Kashi's Plate of Conjunctions", Isis 38 (1-2): 56-59 [56]
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   Inventions of the Islamic Golden Age

   A significant number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Spain and Africa in the west to the Indian subcontinent and Malay Archipelago in the east. ... Planetary computer: The Plate of Zones, a mechanical planetary computer which could graphically solve a number of planetary problems, was invented by al-Kashi in the 15th century.
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   Inventions in medieval Islam

   A number of inventions were developed in the medieval Islamic world, a geopolitical region that has at various times extended from Spain and Africa in the west to the Indian subcontinent and Malay Archipelago in the east. ... Planetary computer: The Plate of Zones, a mechanical planetary computer which could graphically solve a number of planetary problems, was invented by al-Kashi in the 15th century.
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   Timeline of computing 2400 BC–1949

   | c. 200 | Indian Jaina mathematicians invented logarithms. | ... ↑ Kennedy, Edward S. (1950), [Expression error: Missing operand for > "A Fifteenth-Century Planetary Computer: al-Kashi's "Tabaq al-Manateq" I. Motion of the Sun and Moon in Longitude"], Isis 41 (2): 180–183
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   History of mathematics

   In the 15th century, Ghiyath al-Kashi computed the value of π to the 16th decimal place. ... In 1976, Wolfgang Haken and Kenneth Appel used a computer to prove the four color theorem.
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   Mathematics in medieval Islam

   In the history of mathematics, mathematics in medieval Islam, often termed Islamic mathematics, is the mathematics developed in the Islamic world between 622 and 1600, during what is known as the Islamic Golden Age, in that part of the world where Islam was the dominant religion. ... http://www-history.mcs.st-andrews.ac.uk/Biographies/Al-Kashi.html
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   Taqi al-Din Muhammad ibn Ma'ruf

   Taqi al-Din invented a framed sextant similar to what Tycho Brahe later used as shown in the picture. ... He discusses the values given by his predecessors, explaining how Ptolemy (ca. 150) used an interpolative method to obtain his value of sin 1° and how Abū al-Wafā' al-Būzjānī (959-998), Ibn Yunus (ca. 1000), Al-Kashi (1393-1449), Qāḍī Zāda al-Rūmī (1337-1412), Ulugh Beg (1394-1449) and Mirim Chelebi improved on the value.
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    Microsatellite

    Microsatellites, Simple Sequence Repeats (SSRs), or tandem repeats, are repeating sequences of 1-6 base pairs of DNA. ... Kashi, Y., et al. 1997.

Explore the following pages on Powerset:

• Jamshīd al-Kāshī,
• Astronomy in medieval Islam,
• Timeline of science and engineering in the Islamic world,
• Inventions of the Islamic Golden Age,
• Inventions in medieval Islam,
• Timeline of computing 2400 BC–1949,
• History of mathematics,
• Mathematics in medieval Islam,
• Taqi al-Din Muhammad ibn Ma'ruf,
• Microsatellite

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