museum of the history of science and technology in islam they have built working models of some of al-jazeera reis water devices talk to debt left when turned explains them to me. as you have a look inside this building you can see the donkey and this stone creamery moving mechanism bringing into running these gears as you can see and then lifting the water up to these channels that's quite a sophisticated machine it is a surface. he was more fascinating engineering. water devices like hell gerry's were hugely important throughout the islamic world as their empire spread across the globe. engineers of the golden age built reservoirs and impressive dams many of which still survived today across the middle east and islamic spain as well as these dams in places like cord of iran and syria irrigation was also provided by nor ears from the arabic now which are giant scooping waterwheels but as populations grew throughout the islamic world it became necessary to have more advanced devices and towards the end of the truss century developed sophisticated water pumps. so have a lot of this even more sophis