DC police used sonic cannon to direct crowd flow during Women's March

Re:DC police used sonic cannon to direct crowd flow during W... by etrautmann on Tuesday December 26, 2017 @09:51PM (#16012503)

This requires direct mechanical coupling to the head. The air to skin interface is an impedance mismatch which causes very little of the energy to be transmitted to the brain. This is likely not a real concern.

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Re:DC police used sonic cannon to direct crowd flow during W... by Sephr on Tuesday December 26, 2017 @09:53PM (#16012508)

The air pockets in your head will resonate quite effectively. The impedance mismatch in the air pockets can result in powerful vibrations. Your head isn't filled with 100% liquids and solids.

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Re:DC police used sonic cannon to direct crowd flow during W... by epmaybe on Wednesday December 27, 2017 @10:06AM (#16015092)

I am interested in investigating this further. Could you link me to any scientific articles that have explained how all this works?

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