Sources
Ibn al-Haytham (c. 965 - c. 1040) latinized as Alhazen - medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq: While aspects of the scientific method have been used and formalized for generations, it was Ibn al-Haytham that was the first put all the pieces of modern science together, most famously in his seven-volume treatise on optics Kitab al-Manazir (Book of Optics), written from 1011 CE to 1021 CE. It was one of the earliest examples of understanding that a hypothesis must be supported by experiments based on confirmable procedures or mathematical reasoning.
He was born in Basra, southern Iraq c 965 CE (c 354 AH - on the Hijri calendar) and worked for most of his career in Cairo, during what was later called the Islamic Golden Age.
For more information see this Wikipedia page.


If you found this interesting, here are a list of other facts you may find interesting:
The study of science has been going on for a long time
A topic as old as time itself - check out lots of other history topics here.
We have lots of facts, see what else interests you at the full list of categories, here.
This wonderful world is full of fascinating, and important facts. If you're like me you probably don't find it easy to remember everything, so we're working here to help you! We also know sometimes it isn't easy to branch out into other, interesting topic areas, so we'll try and mix things up for you, too!
At a high level we currently have interesting facts under the following categories:
So jump in and start learning answers to questions like: