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A spherical expert onultrasonic wavesthinks the wide reported title that U.S. embassy staffers in Cuba were attacked with a sonic artillery does n’t make sense .
In 2016 , U.S. embassy staff in Cuba started to complain about a series of unusual symptoms after get wind loudly , strange noises and feeling " ghostly " movement in the melodic line . The symptoms include hearing loss and even foretoken pointing to brain injury . In other reports , U.S. officials suggestedthat sonic artillery were likely the cause , though later , exhaustive aesculapian studiescast doubt on that notion . Timothy Leighton , a professor of acoustics at the University of Southampton in England , say the whole concept of using ultrasonic moving ridge in this fashion is " ridiculous . "
The US embassy in Havana, Cuba
" At the closing of the day , I think it ’s super improbable this was an ultrasonic attack , " Leighton told Live Science in advance of a presentation at the hundred-and-seventy-fifth Meeting of the Acoustical Society of America today ( May 9 ) on the real problems link with supersonic waves . [ The 7 heavy Mysteries of the Human Body ]
The notion is so nonsensical , he said , because ultrasonic wafture but do n’t affect the whole population equally , so it would be impossible to live in advance whether anyone in the embassy — permit alone specific staffers — would be harm by the attack .
Ultrasonic waves are simply very high - pitched sound waves , too high for most mass to hear . Scientific papers from as far back as the 1960shave shownthat these moving ridge can have negative effect on sensitive people , with symptoms ranging from tinnitus to nausea .
But those impression , Leighton tell , are n’t evenly distributed .
grown men tend to be least sensitive to supersonic waves , Leighton say , because theytend to losetheir power to hear high frequencies . Adults in world-wide are less susceptible to ultrasonic waves than fry , who often have much better audience in high oftenness — though woman are somewhat more potential to be susceptible .
" If you ’re attacking embassy stave you would n’t take a weapon where the untoward consequence on an individual is extremely variable , " Leighton sound out .
( Leighton is speaking here as an expert on the acoustics of supersonic waves , not a weapons expert . )
It ’s not farfetched that an ultrasonic weapon might get some damage in the right circumstances , Leighton said , but a building full of adults , many of them men , would be an unconvincing aim .
" Now if we were talking about a maternity Baroness Jackson of Lodsworth and we wanted to make baby cry , then that ’s a weapon to choose . "
The other event , he said , is that even very loud ultrasonic waves have a jolly limited range in buildings .
" It ’s not like a rifle that you may shoot through a rampart , " he said . " It can get the great unwashed in this room and the next way , and that ’s it . "
Originally published onLive scientific discipline .
