The Fear Frequency | Sonic Weapons, Havana Syndrome

have you ever wondered what ghosts sound. like in the early 1980s vic tandy was. working at warwick labs in the uk where. he designed medical equipment there were. rumors among the staff that the building. was haunted but tandy figured this was. related to the constant sound of life. support systems that were operating on. site but one night tandy was working. late when he started to feel strange the. hairs on the back of his neck stood up. he broke into a cold sweat and felt the. sense of dread wash over him his heart. started to race and he had the very. specific feeling that he was being.

watched then out of the corner of his. eye he caught the glimpse of a gray. figure drifting across the room he. turned around the figure was gone. absolutely terrified vic tandy bolted. from the lab and raced home now after he. calmed down he vowed to find a logical. scientific explanation for what happened. well did he. well. [Music]. vic tandy got to his office the next day. and started looking around for the ghost.

but he didn't find one but he had. noticed something strange he was an avid. fencer and in his lab he had a foil. locked in a vice wait he sold stolen. merchandise no that's a fence fencing is. a style of sword fighting using a foil a. sword made out of foil no a foil is the. type of sword i'm so confused. it doesn't matter anyway a foil. was locked in a vice and tandy noticed. it was vibrating really quickly even. though nothing was touching it now it. turns out a fan was recently installed.

in the lab and was causing a sound wave. to bounce between the walls and the. wave's intensity was focused in the. center of the room which was the. location of the foil. and where he was standing when he saw. the ghost a candy calculated the. frequency of the sound at about 19 hertz. this frequency is important the range of. human hearing starts at 20 hertz so. tandy's fan wasn't audible it's what's. known as infrasound but just because we. can't hear it doesn't mean it can affect. us all material objects have a natural. resonant frequency if the object is.

exposed to a sound wave of this. frequency it'll vibrate in response this. is called sympathetic resonance and you. can test this if you strike a key on a. piano in one room a piano in another. room will resonate that same note this. is also why running your finger around. the rim of a glass at just the right. speed will produce sound. now back to tandy's lab it turns out. that the human eye resonates at about 19. hertz so what appeared to be a ghost was.

actually tandy's eye vibrating at the. frequency of the fan since this. frequency has an actual physical effect. on the body the sound was causing a. sense of fear and anxiety to employees. in the area and tandy said that when. they switched off the fan it was like a. huge weight was lifted and these. frequencies don't just affect humans. researchers have discovered that just. before a tiger attacks its roar contains. frequencies at 18 hertz which could. disorient their prey long enough for the. tiger to move in for the kill now just. under 20 hertz has been called the fear.

frequency for how it affects mammals and. lots of horror movies have used sounds. at or just above the fear frequency to. make their films even scarier. what happens if we go lower lower than. 18 hertz yeah. things get much worse how much worse. uh ever hear the brown note the brown. note. does that mean what i think it means. grab a diaper. [Music]. the brown note is said to occur at. frequencies between five and nine hertz.

this is the hypothetical range of sound. that supposedly causes humans to lose. control of their bowels i say. hypothetical because nobody's been able. to actually prove it yet the brown note. was famously busted by adam savage on. mythbusters when he surrounded himself. with giant speakers and had the note. pumped into his body now he didn't feel. so great afterwards but his diaper. stayed clean he actually wore a diaper. yup. i love mythbusters me too but here's the. thing about that experiment air really. isn't a great conductor of sound.

especially at low frequencies but when. you're physically connected to the. vibration its effects are much more. intense the united states space program. conducted tests that transferred brown. note and other frequencies directly to. subjects bodies by vibrating cockpit. chairs now test frequencies range from. 0.5 hertz to 40 hertz and power levels. of 160 decibels is that loud well for a. comparison a lawnmower is 90 decibels a. chainsaw is about 130 and a gunshot is.

140 so testing people at 160 db even if. you can't technically hear the sound. it's going to get results test subjects. experience nausea hallucinations. difficulty breathing and involuntary. motor functions. nobody officially crapped their pants. but this experiment is probably where. the urban myth came from but you don't. have to be an astronaut to get sick from. sound there's something called wind. turbine syndrome now not everyone but a. little over 20 of people who live near. large wind turbine farms report all.

kinds of negative effects and they range. from difficulty concentrating all the. way up to extreme stress and. uncontrollable migraines in one instance. an air traffic controller almost caused. a fatal plane crash because he was. experiencing insomnia caused by living. near a wind farm now there have been. about 20 studies done on wind farms but. they found no link between the turbines. and people getting sick who conducted. these studies. the wind turbine companies. i thought so still it has been proven. that people who live and work near a lot.

of noise experience higher levels of. stress and have more cortisol in their. blood than people who live in quiet. environments so if we know sound can be. dangerous. could it be used as a weapon i'm gonna. go with the yes. yep. the most dangerous frequencies to humans. are at about seven hertz this is the. median alpha rhythm of the brain and the. resonant frequency of many of the body's. organs what does all that word salad. mean this means that at high enough. volume these sounds can directly affect.

the central nervous system causing panic. convulsions vomiting and with long. enough exposure organ rupture and death. and one of the most well-known inventors. of infrasonic weapons was a russian-born. french scientist named vladimir govrow. now gavrow became interested in sound. research in 1957 when he was asked to. cure an unknown illness that was. affecting people at a research plant in. marseille now gavro tracked the problem. to air conditioning units that were. generating low frequency sound when the. units were turned off the problem. suddenly disappeared so gavro began.

experimenting with acoustics to create a. weapon for the french military a big. shock whenever we discover something. dangerous turn it into a weapon. that does seem to be what happens gain a. function. so gavrow developed a few prototypes. which he tested on himself and his team. and according to reports one of the. researchers died instantly and guerrero. wrote his internal organs mashed into an. amorphous jelly by the vibrations. even people at nearby labs were sick for.

hours they said every organ in their. body was vibrating hearts lungs stomachs. everything now these weapons used. infrasound which are frequencies below. human hearing but what about frequencies. above human hearing that's called. ultrasound and it's also dangerous there. are two ways that ultrasound damages the. body the first is that sound waves can. actually heat up human cells which. causes all kinds of problems. the other is something called cavitation.

when sound waves pass through an object. they rapidly push and pull on that. object this is called compression and. refraction when ultrasound causes human. cells to cavitate it creates bubbles in. the tissue and this is exactly what. happens to divers suffering from. decompression sickness depends. right the bents ultrasound is such an. effective weapon that has been used by. the us navy to repel pirates. so the us has used sonic weapons against. its enemies but have the enemies of the. us. use sonic weapons to attack americans.

turns out. they have. a strange illness has been afflicting. american intelligence officers and. diplomats in cuba and it's now known as. havana syndrome this summer the cia. reported that officers were experiencing. symptoms while traveling to india two. u.s officials visiting hanoi suffered. unexplained health incidents and. recently german officials confirmed that. they are investigating an alleged sonic. attack against the u.s embassy in berlin. so what does havana syndrome feel like.

well it's described as someone suddenly. experiencing a broad range of symptoms. like migraines anxiety dizziness lapses. of memory and cognitive disruption now. some people describe that they feel like. they were hit by a blast wave or a beam. of energy and in some cases the symptoms. were brief but other people experienced. such devastating effects that they. required hospitalization and long-term. care the first cases of havana syndrome. were reported in 2016 when canadian and. american officials arrived in cuba.

cia officers stationed at the embassy. there reported feeling fatigue nausea. and pressure headaches and brain scans. showed tissue damage that's normally. seen in people with concussions after. being in a car accident the issue was so. serious that the obama administration. evacuated the embassy what if the cubans. had to say about it oh they had no idea. what could be happening yeah but since. then havana syndrome has been reported. by u.s officials all over the world cuba. china russia colombia uzbekistan even. the united states and last year two. white house staff experienced symptoms.

while working at the white house. according to investigators the illness. could be the result of a sonic weapon or. exposure to high-energy microwaves. another study done by the national. academies of science engineering and. medicine said that directed pulsed radio. frequency energy could be responsible. many intelligence officers are quietly. pointing the finger at russia but no. evidence has been made public yet what. did the russians have to say about it oh. they deny any involvement. as of now there's still no official.

explanation but the cia and state. department have prioritized getting to. the root cause of havana syndrome oh. they're always trying to get to the root. cause they are do they ever find it. yeah. [Music]. thanks for hanging out with us today my. name is aj that's hecklefish this has. been the y-files if you had fun or. learned anything help us out by liking. commenting or sharing this video only. with your help can we defeat the. algorithm until next time be safe be. kind and know that you are appreciated.

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