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Through technology, the phonograph both circumvented and bolstered the cultural hierarchy present in stay musical efficiency. But farm size doesn’t appear to clarify differences in yields and net Technology returns when the technology is adopted. Fuel-cell technologies are being used to generate energy for telecom and industrial prospects. Roll-out of the new technology has been dogged by technical issues and secrecy.

The ancient Sumerians used the potter’s wheel and will have invented it. A stone pottery wheel found in the city-state of Ur dates to round 3429 BCE, and even older fragments of wheel-thrown pottery have been found in the identical space. Fast potters’ wheels enabled early mass manufacturing of pottery, but it was using the wheel as a transformer of power that revolutionized the appliance of nonhuman power sources. The first two-wheeled carts have been derived from travois and have been first used in Mesopotamia and Iran in round …