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  • Boffins use atmospheric water to send messages by laser beam

    Boffins use atmospheric water to send messages by laser beam0

    I’m wicked and I’m laser-y BOFFINS AT MIT have found a way to send audio signals straight to someone’s ears using laser beams, completely unheard by anyone but the target. The ‘photoacoustic’ technique works by firing a laser at a frequency that allows the moisture in the air to be absorbed and converted to sound

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