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The first qanats originated in ancient Persia and brought water from the northern mountains to the southern plains for irrigation, cleaning, and sustenance.
My friend here is hard at work digging out a qanat. Qanats are underground canals which link together many wells that are used to supply water to dry, remote areas.
Ancient Persian engineers from the 7th century BC piggybacked on the Babylonian windwheel to design a more effective windmill. Windmills were used for pumping water and grinding grain.
The most probable theory is the use of the battery in early experimentation with electroplating. Others suggest that the battery had some medical purpose.
One of the more interesting innovations to come out of Persia was the Baghdad Battery. It consisted of a clay vessel that contained an oxidized iron rod inside a copper tube. When acid was added, an electrical current was produced.
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