你能通过漏斗吹灭蜡烛吗?试一试把蜡烛的火焰放到漏斗大口一侧的中心,然后,你对着漏斗小口一端用力吹,来吹灭蜡烛。揭开奥秘即便你吹得上气不接下气,火焰也不会熄灭,它反而会向漏斗小口一端靠拢。包括空气在内,很多流体有沿着物体表面流动的特性。因此,你吹进漏斗的空气会立刻沿漏斗内侧表面散开,几乎都没有到达漏斗大口的中心附 Can you blow out the candle through the funnel? Try to place the flame of the candle in the center of the large mouth of the funnel, and then blow hard against the small end of the funnel to blow out the candle. Unveil the Mystery Even if you blow the air out of breath, the flame will not go out, it will be closer to the funnel mouth. Many fluids, including air, flow along the surface of the object. Therefore, the air you blow into the funnel will immediately spread along the inside surface of the funnel, almost without reaching the center of the funnel