Recently, pictures of "steam" and "smoke" coming out of the top of the Shanghai World Financial Center were spread on social platforms. What the hell is going on? The Shanghai Rumor Refuting Platform revealed the secret. turn out to be,These white smoke are small droplets formed by condensation of water vapor when it is cooled. Its essence is consistent with clouds and fog in nature.
Among the three-piece suites in Lujiazui (Shanghai Tower, Shanghai World Financial Center, and Jin Mao Tower), only the top of the Shanghai World Financial Center has this phenomenon, which is related to its unique "bottle opener" shape.
The Shanghai World Financial Center is 492 meters high. There is a hole in the middle of the top. This is the key problem.
When the wind blows, according to Bernoulli's principle, the increase in flow speed causes the pressure to decrease and the air temperature to decrease. If the air humidity is high at this time, water vapor will precipitate due to supersaturation and condense into small mist-like droplets, which is the "smoke" phenomenon photographed by netizens.
