My next review is of Science and Islam: A History by Ehsan Masood. It follows on from a lot of reading I’ve done around the history of science in Western Europe and the US. It also fills a gap between books I’ve read on the Iron Age and Roman Period and the Early Modern Period. Much of the action takes place in the so called Dark Ages – a time where in my part of North West England Roman ruins were collecting pigeon droppings and little other archaeology survives!
Science and Islam is comprised of three parts, the first is an overview of the politics of the Islamic Empire from the 7th century until the Mongol invasion 13th century with an aside regarding the Tartar invasion in the 14th century. The second part covers sciences thematically. The final, shorter part, covers philosophy, the impact of Islamic science on Western European science in the 16th century and beyond and the post-colonial landscape.
Islam was founded by the Prophet Muhammad in 610CE, he died in 632CE. A series of four Caliphs built the Islamic Empire by taking over the Persian Empire and chunks of the Byzantine Empire in the following three decades. The Empire would reach Spain in 711CE.
The Umayyads were the first caliphate dynasty, they used Damascus as their capital, but were deposed by the Abbasids in 747CE who went on to found their capital in Baghdad. The Empire managed to retain a single leader, or Caliph until 909CE when the Fatamid Caliphate was established in Cairo. Subsequently a caliphate was established in Córdoba, Spain in 929CE. Each of these capitals became a seat of learning.
Science in the Islamic Empire started with a translation project commenced under the Abbasid regime in Baghdad which sought to translate scholarly works principally from Ancient Greece but also from Persia and India. It was conducted by Muslim, Christian and Jewish scholars with a focus on practical texts rather than literature – it struck me that this was echoed by the Renaissance in Western Europe some time later. The crudest translations were simply word for word transcriptions which often led to near gibberish. More thoughtful translators translated for meaning and often added their own commentary – a start to new science. The translation enterprise was boosted by the arrival of paper in Baghdad in 751CE from China.
The Islamic Empire lingered on as the Ottoman Empire until after the First World War although it had largely lost its interest in science. The golden age of the Islamic Empire ended with the Mongol invasions from the East in the 13th century. The Islamic Empire finally left Spain in 1492 although from the 13th century all that remained was the small Emirate of Granada.
The thematic chapters of Islam and Science cover medicine, astronomy, maths, chemistry and mechanical devices. The impact of Arabic scientists is visible in our language: in astronomy with star names like Aldebaran, Rigel, Betelgeuse; chemistry has alkali, alcohol, alchemy, and chemistry; maths has algebra and algorithm.
Medicine was important in the Islamic Empire, initially they followed the Greek physician Galen’s ideas which were derived from Hippocrates’ four humours model of medicine. By the 9th century some were questioning aspects of Galen’s work – his human anatomy was rather suspect since he relied on animal dissections. Later Ibn-Sina’s (latin: Avicenna) Canon of Medicine summarised all of medical knowledge from Galen but also Persian, Chinese and Indian medicine – it was in print for six centuries. Hospitals were established in the nineth century onwards and many remained open for centuries. Medical trials were seen as an accepted part of medicine.
Islamic practice makes three demands on astronomy – timing for five prayers a day, the direction to Mecca, and the 12 months of the year. Sophisticated measurement is not absolutely required for this but in practice each mosque had its own timekeeper – a muwaqqit – so their was a lot of expertise in astronomy around, and a lot of observations were being made. More so after Ptolemy’s work on celestial motions was translated into Arabic which led Islamic astronomers to compile tables of celestial motion and compare them to Indian and Greek measurements. Ptolemy’s work is fatally flawed because it assumes a geocentric system with motion built from an ever increasing number of epicycles. The Islamic astronomers realised there were problems with this model and made some attempts to fix them but retained geocentricity. There is some evidence that Copernicus knew of this work when he proposed his heliocentric model.
As for maths, in the West we use “Arabic Numerals”, in Arabic these are referred to as “Indian Numerals” this is a result of the work of Al-Khwarizmi, who was born in 786CE. Essentially he popularised “Indian numerals” by translating Indian mathematical works. It is from him that we get “algebra”, interestingly his algebra was expressed in words not symbols, and was invented at the behest of his Caliph in an effort to simplify Islamic law around inheritance. I am bemused that mathematics, often seen as the “purist” of sciences, developed from accountancy and law. In the 11th century Omar Khayyam produced geometric solutions to cubic equations and also calculated the length of the year very precisely. Islamic scholars also developed trigonometry from the work of Greek and Indian scholars.
The chapter on chemistry talks mainly about Jabir ibn-Hayyan (latin: Geber) from the 8th century. A large number of texts are attributed to him covering many experimental methods, equipment, processes (such as distillation and reduction) as well as chemicals like sulphuric and nitric acid. In common with the Early Modern Period in Western Europe, alchemy and chemistry existed side by side.
The brothers Jafar-Muhammad, Ahmad and Al-hasan known as Banu Musa were adopted to the House of Wisdom in Baghdad under the reign of Caliph al-Mamun in the 9th century. They were involved in the translation project but went on to describe one hundred mechanical toys in their Book of Ingenious Devices – many were powered by pressurised water. The pinnacle of Islamic engineering was Badi al-Zaman al-Jazari whose 1206 book, sometimes called Automata, described how to build 50 complex automata.
The Islamic Empire had been in contact with Europe through the medieval period, one gets the impression of science in Western Europe being kickstarted by contact with the Islamic Empire as it went into decline in the 13th century. It is clear that European scholars were familiar with Arabic sources in the Early Modern Period but tended not to cite them – the strong citation culture we see in modern science is a 19th century invention.
A couple of times Masood talks about Islam being easy to follow as an adherent – although one can make sophisticated determinations of time for prayers, and the direction of Mecca it is not strictly required so the religion itself does not make great demands on science. I found this a bit puzzling since it seems to me that this is the case for most religions worshipped now. I wonder whether it is a comparison with Sumerian and Egyptian systems or whether it is to highlight that science is not a necessity to Islam.
I found this a great introduction to the medieval Islamic Empire and Islamic science in the 7th to 16th centuries. It is quite brief and readable. For me the context of the Islamic Empire was very useful since it was something of which I was completely ignorant. As a scientist I would have preferred a bit more depth to the science and scientists but with the inclusion of the background material I needed on the Islamic Empire it would have made a rather longer book.
