Sound as a Weapon
In 1957, by accident, Dr. Vladimir Gavreau and his research team discovered that sound could also become a very deadly weapon. Gavreau's team was working on robotics research, when they all became very ill. After an investigation, it was discovered that there was an improperly installed ventilator motor in their building, that when coupled with a long airshaft, that acted like an organ pipe, had created an inaudible 7 Hz tone.
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