Ja\\\'far_muhammad_ibn_mūsā_ibn_shākir

Ja‘far Muḥammad ibn Mūsā ibn Shākir (800 - 873) (Arabic: جعفر محمد بن موسى بن شاكر‎) was a 9th century Persian astronomer, engineer, mathematician and physicist from Baghdad, the eldest of the Banū Mūsā brothers.

Works

Book of Ingenious Devices

Main article: Book of Ingenious Devices

Book on the motion of the orbs

In physics and astronomy, Muhammad ibn Musa was a pioneer of astrophysics and celestial mechanics. In the Book on the motion of the orbs, he hypothesized that heavenly bodies and celestial spheres were subject to the same laws of physics as Earth, unlike the ancients who believed that the celestial spheres followed their own set of physical laws different from that of Earth.George Saliba (1994). "Early Arabic Critique of Ptolemaic Cosmology: A Ninth-Century Text on the Motion of the Celestial Spheres", Journal for the History of Astronomy 25, p. 115-141 [116].

Astral Motion and The Force of Attraction

In mechanics and astronomy, Muhammad ibn Musa, in his Astral Motion and The Force of Attraction, proposed that there was a force of attraction between heavenly bodies,K. A. Waheed (1978). Islam and The Origins of Modern Science, p. 27. Islamic Publication Ltd., Lahore. foreshadowing Newton\'s law of universal gravitation.Robert Briffault (1938). The Making of Humanity, p. 191.

Premises of the book of conics

In mathematics, he wrote a critical revision on Apollonius\' Conics, called the Premises of the book of conics.

See also

• Banū Mūsā

Notes

References

• O\'Connor, John J; Edmund F. Robertson "Jafar Muhammad Banu Musa". MacTutor History of Mathematics archive.  
• Golden Age of Persia, Richard Nelson Frye, p162-163.
• D El-Dabbah, The geometrical treatise of the ninth-century Baghdad mathematicians Banu Musa (Russian), in History Methodology Natur. Sci., No. V, Math. Izdat. (Moscow, 1966), 131-139.

See also

• Ahmad bin Musa
• Hasan bin Musa

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