美国康奈尔大学云雾物理学家汤姆发明了一种云雾发生机。该机包括水泵、喷嘴及过滤器等。工作原理是:以极高的压力从一根人发粗的微孔往外喷水,出口处有一锐利针尖,使喷出的水滴直径小到人发直径的 Tom Cornell, a cloud physicist at Cornell University in the United States, invented a cloud-generating machine. The machine includes pumps, nozzles and filters. The working principle is: to a very high pressure from the hair of a man outside the microporous spray water, the outlet has a sharp tip, so that the diameter of the spray droplets to the human hair diameter