Ask the Chatbot Games & Quizzes ProCon History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture Money Videos
Abū Sahl al-Kūhī
Directory
References
Discover
NBA Lakers Celtics Finals Kevin Garnett shooting.
10 Great Sports Rivalries
Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.
9 of the World’s Deadliest Mammals
Common, or southern, cassowary (Casuarius casuarius).
8 Birds That Can’t Fly
New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
Why Is It Called Black Friday?
Secret Service Agent Listens To Earpiece
Secret Service Code Names of 11 U.S. Presidents
Bog body. Head of Tollund Man. Died at about age 30-40, Dated to about 280 BCE early Iron Age. Found Bjaeldskovdal bog Denmark in 1950 near Elling Woman. Most well preserved bog body to date. Human remains mummified in natural peat bogs. mummy, embalm
9 Noteworthy Bog Bodies (And What They Tell Us)
Mount Everest (Mt. Everest, mountains, Himalayas).
Is Mount Everest Really the Tallest Mountain in the World?

Abū Sahl al-Kūhī

Islamic mathematician

Learn about this topic in these articles:

Islamic mathematics

  • Babylonian mathematical tablet
    In mathematics: Mathematics in the 10th century

    …grandson Ibrāhīm ibn Sinān (909–946), Abū Sahl al-Kūhī (died c. 995), and Ibn al-Haytham solved problems involving the pure geometry of conic sections, including the areas and volumes of plane and solid figures formed from them, and also investigated the optical properties of mirrors made from conic sections. Ibrāhīm ibn…

    Read More