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The video examines the design of a wind turbine enclosed in a pipe with a confuser and diffuser, and discusses whether such a design can increase the efficiency of a wind generator. The paradox of a tapering pipe https://youtube/MVExyWHZYKs Ball in a stream • Ball in a stream Our channel with additional materials https://t.me/getaclass_channel Novosibirsk State University Physics Department of NSU https://www.nsu.ru/