Abu Bakr al-Razi

Persian polymath, physician, chemist and philosopher (854-925)

In the history of chemistry, Abu Bakr al-Razi occupies the ground between patient observation and the larger claims it makes possible.

Abu Bakr al-Razi was born at Ray in 866.

Learning in this period moved through courts, monasteries and madrasas, and a scholar's reach depended on which libraries and translations were within travelling distance.

His research centred on medicine.

His name is attached above all to criticism of religion, especially with regard to the concepts of prophethood and revelation. Chemistry is the science of what matter actually does, and it moves one stubbornly repeated experiment at a time.

The surviving body of work includes Doubts About Galen, Q108041965 and The comprehensive book on medicine.

What that record amounts to is a body of chemistry that later workers could build on without re-checking. That is the practical test of a scientific life, and it is a harder one than fame.

Abu Bakr al-Razi died in 925, aged 59. What survives is not the reputation but the result: the part of chemistry that no longer has to be argued for.

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