国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

USEUROPEAFRICAASIA 中文雙語Fran?ais
Opinion
Home / Opinion / Op-Ed Contributors

Can 15 m people blow away smog? That's a joke

By Zhang Zhouxiang | chinadaily.com.cn | Updated: 2017-11-29 12:35

Can 15 m people blow away smog? That's a joke

Passengers head home at a railway station in Xi'an on a smoggy day, Jan 17, 2017. [Photo/IC]

Imagine 15 million people waving fans in the same direction at the same time?

That idea appeared on the official website of the State Intellectual Property Office, as a "solution" to free Beijing of smog, because the person applying for a patent argues that so many people waving fans at the same time will produce a wind strong enough to blow smoggy weather away. According to the website, the applicant has passed the first step of patent application process.

It seems the person applying for a patent lacks the most basic training in both social and natural sciences. First, having little knowledge about the science of social organization, he or she does not know how difficult it is to get 15 million people together and get them fan in the same direction at the same time.

Second, clearly a basic calculation has not been done to determine whether the fanning of 15 million people could produce a strong enough wind. Taking air purifiers for comparison, a rough calculation finds that a 700-squaremeter hall, with the height of 3 meters, needs more than 500,000 cubic meters of air flow per hour to keep its air clean. Beijing covers 16,000 square kilometers, which means it is about 22 million times the size of the hall, which far exceeds the ability of human fanning.

Besides, when people fan together, the majority of them make nothing but air turbulence, rather than a strong air flow.

Therefore, such a patent is foolish and all it does is to make people laugh. But do not mistake it being published on the official website of State Intellectual Property Office as it being "approved".

Data from the official website shows the joke application is still waiting for review, and its publication on the site only means the materials have been received. The public could have trust on the experts who will read the materials, and all they need is some time.

Most Viewed in 24 Hours
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
泉州市| 夏邑县| 福安市| 抚远县| 乡宁县| 英吉沙县| 长宁县| 文登市| 延边| 章丘市| 安西县| 闽侯县| 香格里拉县| 庆阳市| 乌兰浩特市| 织金县| 开原市| 潜江市| 西乌珠穆沁旗| 贡嘎县| 商都县| 济阳县| 自贡市| 松原市| 萍乡市| 巴中市| 沙湾县| 新民市| 安庆市| 恩平市| 扶绥县| 正安县| 潼关县| 轮台县| 东乡| 辽阳市| 宝清县| 兴化市| 牡丹江市| 驻马店市| 毕节市|