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Mathematics & astronomy

Abū Maḥmūd al-Khujandī

Also found as Khojandi · Khujandi

Constructed a large mural sextant and measured Earth’s axial tilt near Rayy.

Research archive · Contribution described
Image used in the research archive for Abū Maḥmūd al-Khujandī
Image used by the research archive for Abū Maḥmūd al-Khujandī. Historical illustrations are later interpretations, not verified likenesses. View image source
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Find Abū Maḥmūd al-Khujandī in our books

Use the printed page in a physical book, or the PDF page in your copy. Open a reference for the surrounding text.

1001 Inventions

Edited by Salim T. S. al-Hassani

3 reading locations

Printed p. 228 PDF p. 231Reading page

“…centur y, a Tajikistan mathematician and astronomer named Al-Khujandi built a huge obser vatory in Rayy, near Tehran, Iran, to obse rve a series of meridian transits of the sun. These let him…”

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Printed p. 277 PDF p. 280Reading page

“…Equator and the plane of the sun's ecliptic, Al-Khujandi in 994 used a device that he claimed was his own invention. It was called the Fakhri sextant because his patron was Fakhr al-Dawla,…”

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Printed p. 315 PDF p. 318Biographical entry

“…(1571-1630); near Stuttgart, Germany; mathematician and astronomer . Al-Khujandi, Abu Mahmud Hamid ibn al-Khidr (940-1000); Khudzhand, Tajikistan; astronomer, built an obser vatory in Ray, Ir an, and constructed a sextant. Al-Khwarizmi, Muhammad ibn…”

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FROM THE RESEARCH ARCHIVE

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This summary comes from the collected Islamic Scientific Heritage posts. It has not been independently verified in full. A book name match alone does not confirm every claim in a post.

14 original research posts

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