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DateDate: 24-09-2019, 05:54
China has developed the world's first portable anti-riot gun.
The tool was created in conjunction with military and law enforcement agencies and is designed to disperse the crowd using focused waves of low-frequency sound, according to a message in the South China Morning Post (SCMP).
According to scientists, the “biological effect” of the device is extreme discomfort with vibrations in the eardrum, eyeballs, stomach, liver and brain.
Some studies have shown that low-frequency sounds can cause dizziness, fatigue, irritation, headaches, and even an increased heart rate.
China was faced with the problem of how to deal effectively with the ongoing protests for democracy in Hong Kong, which sometimes became violent and led to a stop at the city airport.
 
Riots in Hong Kong
Professor Xie Xujuan, a leading researcher at the project, told the Chinese media that the device is powered by a tube-shaped vessel containing inert gas. When heated, the gas particles vibrate and a deep monotonous sound is produced.
 
Professor Xie Sujuan Explains the Work of the Government Scientific Commission
However, the professor did not begin to disclose details of the frequency of the device or its range.
The prototype passed field and third-party tests, and scientists completed an assessment of its effect on the body.