- published: 19 Nov 2008
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Muḥammad ibn Isḥāq ibn Yasār ibn Khiyār (according to some sources, ibn Khabbār, or Kūmān, or Kūtān,Arabic: محمد بن إسحاق بن يسار بن خيار, or simply ibn Isḥaq ابن إسحاق, meaning "the son of Isaac") (died 767, or 761) was an Arab Muslim historian and hagiographer. Under the aegis of the 'Abbasid caliph Al-Mansur, Ibn Ishaq collected oral traditions that formed the basis of the most important biography of the Islamic prophet Muhammad.
Born in Medina, ibn Isḥaq was the grandson of a Christian man, Yasār, who had been captured in one of Khalid ibn al-Walid's campaigns and taken to Medina as a slave. His grandfather became the slave of Qays ibn Makhrama ibn al-Muṭṭalib ibn ʿAbd Manāf ibn Quṣayy and, having accepted Islam, was manumitted and became his mawlā, thus acquiring the nisbat al-Muṭṭalibī. Yasār's three sons, Mūsā, ʿAbd al-Raḥmān, and Isḥāq, were all known as transmitters of akhbār, who collected and recounted tales of the past. Isḥāq married the daughter of another mawlā and from this marriage ibn Isḥāq was born.
Hunayn ibn Ishaq (also Hunain or Hunein) (Syriac: ܚܢܝܢ ܒܪ ܐܝܣܚܩ, Arabic: أبو زيد حنين بن إسحاق العبادي; ’Abū Zayd Ḥunayn ibn ’Isḥāq al-‘Ibādī, known in Latin as Johannitius) (809–873) was a famous and influential AssyrianNestorian Christian scholar, physician, and scientist, known for his work in translating Greek scientific and medical works into Arabic and Syriac during the heyday of the Islamic Abbasid Caliphate. Ḥunayn ibn Isḥaq was the most productive translator of Greek medical and scientific treatises in his day. He studied Greek and became known among the Arabs as the "Sheikh of the translators." He mastered four languages: Arabic, Syriac, Greek and Persian. His translations did not require corrections. Hunayn’s method was widely followed by later translators. He was originally from southern Iraq but he spent his working life in Baghdad, the center of the great ninth-century Greek-into-Arabic/Syriac translation movement.
In the Abbasid era, a new interest in extending the study of Greek science had arisen. At that time, there was a vast amount of untranslated ancient Greek literature pertaining to philosophy, mathematics, natural science, and medicine. This valuable information was only accessible to a very small minority of Middle Eastern scholars who knew the Greek language; the need for an organized translation movement was urgent. In time, Hunayn ibn Ishaq became arguably the chief translator of the era, and laid the foundations of Islamic medicine. In his lifetime, ibn Ishaq translated 116 works, including Plato’s Timaeus, Aristotle’s Metaphysics, and the Old Testament, into Syriac and Arabic. Ibn Ishaq also produced 36 of his own books, 21 of which covered the field of medicine. His son Ishaq, and his nephew Hubaysh, worked together with him at times to help translate. Hunayn ibn Ishaq is known for his translations, his method of translation, and his contributions to medicine.
Stephen William Hawking, CH, CBE, FRS, FRSA (born 8 January 1942) is a British theoretical physicist, cosmologist, and author. His key scientific works to date have included providing, with Roger Penrose, theorems regarding gravitational singularities in the framework of general relativity, and the theoretical prediction that black holes should emit radiation, which is today known as Hawking radiation (or sometimes as Bekenstein–Hawking radiation).
He is an Honorary Fellow of the Royal Society of Arts, a lifetime member of the Pontifical Academy of Sciences, and in 2009 was awarded the Presidential Medal of Freedom, the highest civilian award in the United States. Hawking was the Lucasian Professor of Mathematics at the University of Cambridge between 1979 and 2009. Subsequently, he became research director at the university's Centre for Theoretical Cosmology.
Hawking has a motor neurone disease related to amyotrophic lateral sclerosis, a condition that has progressed over the years. He is now almost completely paralysed and communicates through a speech generating device. He has been married twice and has three children. Hawking has achieved success with works of popular science in which he discusses his own theories and cosmology in general; these include A Brief History of Time, which stayed on the British Sunday Times best-sellers list for a record-breaking 237 weeks.