Died : 1525–1526
Abd Ali ibn Muhammad ibn Husayn
Birjandi (Persian: عبدعلی محمد بن حسین بیرجندی) (died 1528) was
a prominent 16th-century Persian astronomer, mathematician and
physicist who lived in Birjand.
Astronomy
In discussing the structure of
the cosmos, al-Birjandi continued Ali al-Qushji's debate on the Earth's
rotation. In his analysis of what might occur if the Earth were moving, he
develops a hypothesis similar to Galileo Galilei's notion of "circular
inertia", which he described in the following observational test (as a
response to one of Qutb al-Din al-Shirazi's arguments):
The small or large rock will fall
to the Earth along the path of a line that is perpendicular to the plane (sath)
of the horizon; this is witnessed by experience (tajriba). And this
perpendicular is away from the tangent point of the Earth's sphere and the
plane of the perceived (hissi) horizon. This point moves with the motion of the
Earth and thus there will be no difference in place of fall of the two rocks.
A work
of al-Birjandi's, Sharh al-Tadhkirah, a manuscript
copy,
beginning of the 17th century
Works
Al-Birjandi wrote some more than 13 books and treatises, including:
·
Sharh al-tadhkirah (A commentary
on al-Tusi's memoir). The text, in some copies of the manuscript from 17th
century, is written throughout in black and red ink with diagrams illustrating
many of the astronomical elements discussed. The 11th chapter of the book
was translated to Sanskrit in 1729 at Jaipur by Nayanasukhopadhyaya. Kusuba and
Pingree present an edition of the Sanskrit, and in a separate section, an
English translation facing the Arabic original. That chapter has attracted
attention among European scholars since the late 19th century. Al-Birjandi
on Tadhkira II, Chapter 11, and Its Sanskrit Translation by Kusuba K.
and Pingree D. ISBN 978-90-04-12475-2 was published in 2001
by Brill Academic Publishers.
·
Sharh-i Bist Bab dar Ma'rifat-i A'mal-i al-Asturlab (Commentary on "Twenty Chapters Dealing with the Uses of the
Astrolabe" of Nasir al-Din al-Tusi; Persian.
·
Risalah fi Alat al-Rasad (Epistle on observational instruments); in Arabic.
·
Tadhkirat al-Ahbab fi Bayan al-Tahabub (Memoir of friends: concerning the explanation of friendship [of
numbers]); in Arabic.
He also wrote on theology.
Sumber
Labels:
Mathematician
Thanks for reading Biografi Al-Birjandi. Please share...!
