Is There A Noise Loud Enough To Kill You?
HTML-код
- Опубликовано: 16 сен 2024
- Loud noises suck. But are they deadly?
Share on Facebook: goo.gl/QhNzk5
Share on Twitter: goo.gl/BKyh8z
Subscribe: goo.gl/ZYI7Gt
Visit our site: www.brainstuffs...
CREDITS:
"Large European Acoustic Facility" photo by Guus Schoonewille
The loudest noise I've ever been exposed to was a 10 year old in an Xbox live party
i legit laughed at this
With a Kinect mic with the TV on full volume
Caleb Courter lmao
loudest noise i heard is a 7 year old screaming
Loudest noise I've ever heard was being at a bassnectar concert without wearing earplugs
Loudest sound i've ever heard was the sega startup sound when i tried to play while my parents where asleep
SEEEEGGGGAAAA
theLOULesgacataqgcat lel the loudest sound ive ever heard is when i go to eat something in the middle of the night and the microwave beeps
When I'm in class and I take out my laptop to take notes and it automatically starts playing the porn I was watching on it. Fuck.
About a 1000 000 times worser. Every Jacksepticeye intro played at the same time
*_SEEEEEGAAAAAAHHHHHHHHHHHHH_*
The loudest noise? Me on the toilet after mexican food.
That was you? I thought it was a hydrogenbomb.
Alvulnax Now you know
Homogenisierer nice
IM DIEING ITS SO FUNNY
Never knew children frequented scientific videos.
The loudest noise I ever heard was my Spanish mom.
YOOOOO soooooo true XD IM DEAD
xD
Knew someone was going to mention their relatives.
that bitch!
you are awesome
The loudest noise people probably get exposed to daily is when you connect your headphones and play something but you forgot it was on the highest. Poor Eardrums.
BTW your intro is very very painful to heat when you play it accidently in full
+Mayur Patel Ha! Oh no! We hope you'll make a full recovery. :)
Thanks I'll let you know when they have full recovered
1 year later, still has not recovered.
lol
The loudest noise ever is your toilet flushing while your family's sleeping.
CrilleMega XD
I have no idea why toilet flushes increase 10x louder when you want it quiet:/
Weaw but forme it's just farting noises when I need it to be quiet
Crilluz lol still me especially when you’re not supposed to be up
Facks
dropping the shampoo in the shower is bloody loud
I can relate to that. Once when I was showering, out of nowhere, a bottle of shampoo falls off the shelf and hits the ground. I almost fucking fell off my two feet.
fucking 5 pound bottle of shampoo flew off my shelf at night and i saw my neighbor's window light up
Lol
Diamond Miner Animaniac Lmaoo
Dropping the soap in prison too
Forgot to wear ear protection one time I was sighting in my AR-15. Fired two rounds and my ear drums were hurting me for literally two days. Not just ringing, but like a headache in my ears.
you mean an earache
AR-15? That's a gun right.
I've never even seen a gun.. unless you count a paintball/laser gun
Holy shit you must have had a jump scare from the shots, thinking that it was going to be quiet.
+Abigail Wildlife You've never seen a gun in real life?
Guitarfollower22 you must not hunt, 2-3 rounds out of a 30-06 in a blind will make you want to chop your ears off
The loudest sound I've experienced is a FA-18 Super Hornet in flight from around 50-100m away at Brisbane River Fire. When it was flying towards me I was like "oh yeah this isn't to loud", but when it goes over and behind you it is the most extreme, chilling, and breathtaking sound ever.
You can't get a sound louder than 194db. Above that it becomes a shockwave
You can, but you wont hear it because its so loud.
shock wave is sound dont be stupid!
+George Akatukwengo 170*
+WarMachine Shockwave isn't sound.
it is sound! if you dont know sound is also waves but when it gets strong they call it shock wave but in reality they are all waves.
I'm pretty sure listening to Justin Beiber is enough to kill you
If that's so, then there's about 500 million dead little girls around the world
Brains....
Nicksagee No one said the truth doesn't hurt
ikr
You can clearly see that they are Zombies. They follow Justin Beiber blindly.
I was really stupid one time when I was 14 and I lit a firecracker, one picked off from those Chinese poppers. I thought I could light it and throw it before it exploded but it popped in my hand immediately and made me deft in my left ear for about 40min haha. Glad it wasn't that bad.
+GLASSB182 Oh my goodness. Glad it didn't stick!
a few days ago i was filling up a water bottle with compressed air with an air compressor and it exploded in my hand. i am okay and it didnt hurt. manly as fuck
i use to live on airforce bases and some of the fighter jets do an afterburner take off and go straight up breaking the sound barrier.
the sonic booms and military aircraft I heard on a regular basis were loud as all hell.
as for recently I have used a deno saw repeatedly without hearing protection. I may or may not have intermittent tinnitus now.
+Aaron Mackay holy shit don't they give you any ear protection for our tax money? Govs suck.
Bartosz Olszewski
no ear protection. unless your on the airfeild
They don't lie when they say RIP headphone users...
Leeroy Jenkins lol
no pun inintended
read more
Loudest noise was when I was in military training. Our tanks were in position, doing test fires. I thought they were done after a long break of silence, so I go to set up my biwak up against our armored vehicle. I'm sitting there, concentrating on that, when all of a sudden, the nearest tank fires a round. Now, the ear facing the tank was fine, but the ear just two feet from the armor-plated vehicle next to me, experience severe pain, as the blast resonated off the solid surface and got amplified. Didn't feel so good. :(
Daniel Renard damn. hope you're all good now
AG3NT
Yeah, the pain was really temporary and gone before nightfall. Another guy from the team was less fortunate on a different occasion, where I think he actually bled from one ear just a little, yet didn't suffer permanent damage to my understanding.
Daniel Renard Jeez. Well I hope that doesn't happen again XD also, thanks for serving.
Daniel Renard What's a biwak? 😮
Idk if its allowed, but on a fire exercise, id keep earplugs on untill departing the area.
Damn it... now I can never live out my dream of having a meaningful conversation with a Blue Whale. At almost 190 Decibels his vast girth of wisdom would fall on dead ears...
+Justin Abramson Sound in water is different from sound in air. 190 db is powerful, but it has to move water, meaning it loses power in water much more quickly.
+David Burke actually Water is denser than air, so it takes more energy to generate a wave, but once a wave has started, it willtravel faster than it would do in air
When I was in the US Navy, I was stationed on an aircraft carrier. I'll tell you that when they are ready to take off, and turn on the after burner, the noise is painful. You have to cover your ears, and your chest vibrates. Not fun at all.
JohnC. vetreran, US Navy
Thank you for your service. /O
That sounds ridiculous, and thank you for your service
How about the carrier horn
We did a new episode on whether noise is loud enough to kill you. Turns out IT CAN. Find out how!
Dear writers, how about instead of "Something called the stereocilia" you use "Stereocilia, which are tiny like hairs that detect fluid motion and play a large part in hearing and balance".
Could you make a video on why you can get dizzy and your vision blurry if you stand up too fast?
DobbyTheElf Want to know too
DobbyTheElf Sure! We'll add it to our list of topics to cover in the future!
I thought the maximum possible sound in air is 194dB? Please explain BrainStuff :)
"Noise, can kill you."
Slowly turns down the video from max volume...
Surreality lol same
Surreality well there's a limit to how loud your headphones/speakers can be.
Pony With An AK ummm didn't know that,mine don't have a,limit
What sound will kill you, I know
in their tongue, he's dovakin dragon born
FUS RO DAH!!!!
>Finishes playing Skyrim
>goes to youtube
>finds this comment
seriously are you a wizard or somthing
Shouted him apart!
I put my ear next to a hollow metal tube, and an asshole hit the tube as hard as he could with his knuckles.
Дьявол that hurt both of you though xD
Дьявол I acualy immagone a real asshole hiting the pipe with a fist XD
I was splitting water molecules once into hydrogen and oxygen using a device i made also known as an HHO generator and i let light to the resulting gases by accident and the bang was so loud that my left ear was ringing for 2 weeks, i thought I did permanent damage but all is ok now!
Glad you're ok! That sounds fascinating.
lol i did that to. sparks and hot salty water went everywhere
Why? haha
BrainStuff - HowStuffWorks Nice pun just saying.
listening to my mother talk
XD
hi P.I
I hear a dull ringing when it is silent
same. i've always had it. it's no big deal.
yeah me too
I hear voices in my head which give me suicidal thoughts, no big deal right?
same
conswela smith It's tinnitus, from hearing damage
The loudest noise i've ever experienced? women.
edgy
true dat
their voice is so fucking sharp
*ahem*
Black woman and Latinas
Drumming without hearing protection... BAD IDEA!
My dad went shooting ONCE without hearing protection and permanently damaged his hearing. It's got slowly worse since then and now he's pretty much half deaf. My loudest sound was probably also a gunshot.
1:38 this is why we need a fucking wall.
Enrique Ibarra lol
Lol it was obviously a joke.
Enrique Ibarra no shit, it was a bad one
Thats so racist man
Lol i am hispanic.
The loudest noise I was ever exposed to is the THX intro while my family's sleeping.
The loudest sound i've ever head was my house alarm going off. It was so loud I fell to me knees and nearly passed out.
XD
Thats what happened to me, except i was sweating a lot
The loudest sound I have heard is the sound of how awesome I am. What was that? Sorry, I can't hear you.
I had tinitus, but in my case I wouldn't hear ringing, but rather a white noise, like tv or radio static. It's very very irritating, I couldn't sleep, and the noise seems to be inside your head! Sometimes if I get very nervous it temporarily comes back. It can drive you insane!
Did it just go away? Do you know usual that is? I'm just a bit worried because I'm only 16 and having tinnitus in my other ear even though I've tried to be careful with music... I just have waaaay too many musical hobbies ._.
Music was, and still is my main hobby. Nowadays I only produce music with my pc, I am what they call a "Bedroom Studio Producer". I play a little guitar also, and I always have to have some kind of music playing, even when I'm sleeping. But to get rid of that annoying thing I had to be without listening to anything at all for a long time. Loud things became a no-no. I have already lost 50% of the hearing frequency range, so I avoid at all costs extremely loud places like clubs or concerts (or psytrance rave parties in my case). But the thing that really ended the problem for good was some medication I started taking, that made me relax a lot, because apparently it was also stress that was causing a high frequency vibration to occur physically inside my ear, resulting in the brain processing it as noise. Avoid very loud music, specially with high power headphones, they do the worst damage because the sound vibrations are directly beamed to your ear.
Thanks for sharing your experiences! It is relieving to know that I'm not tied to this for the rest of my life. Mine isn't very loud, luckily, so most of time I don't pay much attention to it, but if I'll be living for 60 years more I believe it would get quite irritating with time. I play multiple instrument and compose with pc, like you, and love to listen to music too, so it's hard to limit the the time with music, but I'll try to keep my ears alive. Good luck with your music production and hearing! ^^
Thanks, good luck to you too! =)
I have tinnitus too and we're doing an upcoming episode on how it works. Thanks. - Christian
Loudest noise to everyone everyday is scarces intro
Rare Bulbasaur yep
I got a much louder noise. Every Jacksepticeye intro played at the same time
The loudest noise I've ever been exposed to is Donald Trumps ego.
Sean Place
...what?
What does Marcellus Wallace, look like!?
The loudest noise...thunder from a lightning strike about 5 feet from my head. I essentially heard nothing but a "tick" and then silence, total silence for several minutes. I didn't even hear a ringing in my ears for those several minutes. My hearing did gradually come back over a few days. I felt the ground come up and hit me in the face, I had been knocked forward to the ground by the shock wave. I had minor burns to the back of my neck either from the heat or UV flash. I was told that the "tick" sound was the EMP energy directly stimulating my auditory nerve.
What's that sound called when it's really silent , that high pitch sound you hear?
I made some errors in the programming of the world but humans eventually make sense of them.
+God That's tinnitus!
Thanks for owning up, dude. We try!
+BrainStuff - HowStuffWorks is there a cure for that cause it's pretty annoying when I'm trying to sleep I have to sleep with a fan or something
+BrainStuff - HowStuffWorks
no no no, like _Everybody_ hears it. Even if you have never experienced a loud noise causing ringing in your ears, you can still hear it.
Some people have actually become mentally insane from it. It is from being in a very silent room and if you do not listen to anything, you will hear a low pitched (it isn't high) ringing. It seems to be coming from nowhere.
Armed Duckling no no not that
It's sound of blood flowing in vessels inside your head.
Loudest noise?
My father
especially when he sneez
+Harith Iqbal true that my dad sneezes the crap off due too the pollen .
To be fair, anything over 185 db (I believe) isn't a sound anymore; it's a shockwave. A little nit-picky, but interesting, I think.
The loudest thing I heard in my life is a squeaker on Xbox one
The loudest noise I ever heard was a Formula 1 car racing past me when me and my dad spent the day out at the Goodwood festival of speed.
flames1000000 The loudest noise I ever heard was a 14.5x114mm ammo fired out of PTRS-41 anti-tank rifle.
Prank Them All ...Ouch.
1- NKOTBSB concert-just all of the screaming and loud music with the combination of bright lights and strobe lighting 2-my friend's brother threw a bottle rocket fireworks at my general direction. I didn't hear right for hours.
Wow. Now I want to see NKOTBSB live.
It was a great concert. New Kids on the Block and Backstreet Boys--great combination...boy bands at their finest.
Kanye's noise, at any volume, will make you want to die.
I can't believe you just typed the word K***e. That's daringly close to death in and of itself, you fool. Be more mindful next time.
+Josh Ringler or donald trump..
+Nicholas Bautista I'm too hip 😂😂
a .44 magnum fired 2 feet away when I forgot my hearing protection. heard the ring for a day really loud and not anymore since luckily
Sorry for being so late but just open your mouth. 🙃
The loudest noise I've ever been exposed to is my mom after report cards
Hmmmm loud parents
44 magnum in a uninsulated indoor gun range . had good hearing protection .but still walked out with ringing in my ears . been ringing for 9weeks now . Protect your ears folks .
Once while I was in 3rd grade, I went to a concert. But the floor plan was so awful, people had to cross the SPEAKERS leaving very little space between me and the seats to go to the bathroom. No other way. That sound almost gave a pulse of unconsciousness. After that, nothing.
Being "close" to a controlled explosion, while in the military. Was the most extreme I've experienced. While its no longer sound per se, the shock wave / pressure wave was so unpleasant even with ear protection on it left me with a sort of white noise sound for about an hour.
lightning struck in a park a couple hundred metres away from my house and that was the loudest thing I've ever heard
i was standing near a light post and it hit the light post fucking loud as shit
***** The terrifying part was over before i knew it had begun that being the actual strike of lightning. After that I could only think about how cool it was to see lightning so close.
Loudest sound was a cannon being fired directly above me as I lay relaxing below a small fort in St Petersburg, Russia. That's the closest I've ever come to losing control of my bowels.
Loudest sound I've heard is top fuel dragsters, they are loud enough that you can feel a reasonable amount of vibration in the air when they race
Nah, sit center row on a drag strip while a jet car speeds by at 150 and top fuel dragsters seem like theyre nothing
Aaron Berkofsky Lol nah that's nothing. Try standing next to a space shuttle while it's launching
Mohammed Aliyu Fair, Ill give you that one.
Me to man, it was so bad!!!
BusVids Perth that's nothing compared to jet trucks
isn't a sound cannon being developed too? if only they'd play bass cannon with it to kill, then you'd kick it by not only a bass cannon, but a bass gun
There is the LRAD (Long Range Acoustic Device), but it can only play high frequency tones because it's a piezo speaker.
You guys title your videos really smart. It makes me curious almost every time and I gotta click!
Thanks Mistah Jay!
BrainStuff - HowStuffWorks lol OK Harley Quinn
Joke: the loudest noise I ever heard is...
My four year old cousin interrupting me
Loudest sound I've heard is my computer when I forgot to plug in my headphones at night
Loudest sound is me sneaking to the kitchen when everyone is asleep
Even though the threshold is 185dB-200 the loudest sound you can get on land is 195dB due to air pressure at sea level
Huh. That's interesting. Never heard that!
ecocommuhippy Makes sense that there would be some type of limit based on the amount of molecules in the medium. Same as in space noone can hear you scream :p max db = 0
ecocommuhippy The loudest sound that supposedly ever occurred on earth is the Krakatoa volcanic eruption in 1883. kottke.org/14/10/the-worlds-loudest-sound
Shochwaves can be much louder.
I was six feet away from an Atlas Aegina steering rocket when it fired at a right angle to me. It shook my body.
Who listened to this at max volume?
Arnaldonintendo u
Arnaldonintendo Good Job!
Top 3 noises that can kill you :
1 : A Vomecial Plane
2 : Submarines Sonar
3 : *yOUr mOm ShOuTinG At yOU in SpaNiSH*
The loudest thing I have ever heard is my Aunt speaking.
Loudest noise I've ever been exposed to is, without a doubt, my brothers car!!! He had a, let's say, rather dramatic sound system set up. It was a late 90s BMW 540i, with only the front seats, the whole back end of the car was speakers and box. He used to enter (and win) sound offs in the UK with approx 157db, produced by 4/6 15" subs plus a whole bunch more speakers in the front and rear (and doors) My first exposure to this (and this was no where near full volume) when he gave me a lift to work one day, was massively ringing ears and I even staggered when walking. Not very pleasant is an huge understatement haha, and he used to actually drive around like this!!! As you can imagine, his hearing is far from perfect nowadays!!! Great vid!!!
OMG.. FW THINKING.. IS THAT YOU?
Yep!
BrainStuff - HowStuffWorks OMG
A whistle ! When standing right next to the train guy who tells the driver he can go has to use a wheel so the driver at the end of 4 carriages can hear. When standing right next to that... :E
ima stop listening to earrapes
The loudest noise ever would be a female, after you tell her you are going to hang out with your friends!
the loadest sound i heard was a trainhorn 😂
omg yes
Dhsj Sjsj Yes me to
Loudest noice i've ever been exposed to: My neighbors
Does that mean listening to dank memes is bad?
dank sounds are good for you
Dank Memes 4 Life❤❤😩💪
Itz_NotMick haha XDXD 😂😂😂😂😂Pepe harambe!!! Now watch me dab 👌🏿👌🏿👌🏿👌🏿👌🏿😂😂😂😂😂😂😂
k
+FuzzyTacoGaming you're making me cringe..
The loudest noise I've heard was when I went to a reggae concert, and the bassist had his electric bass turned way up. Not only did it drown out the other instruments as well as the singer, it also made me feel like I would puke every time he played a very low note.
The loudest fart was recorded at 87 decibels
Pfft.
Thats nothing next to mine when i eat beans.
The loudest sound I've heard was at a concert. I don't know how people can handle that, it's absolutely horrifying.
I could feel the music beating inside me as if it were my own heart.
Pusc
The loudest noise I ever heard was my class they never stop talking, shouting
Music From Games oh man me to wanna lolipop? BEFORE WE GO DEEF
Wanna hear the loudest noise ever? Go to school and open up a bag of hot Cheetos... "HEYY BEST FRENNN"
this video earn you a sub ;)
+hello universe Aww, thanks!
+BrainStuff - HowStuffWorks and another one
BrainStuff - HowStuffWorks and another one!
BrainStuff - HowStuffWorks and another one
me too
i was tuning the bottom head of a marching snare, and my friend did a rimshot on it right next to my eardrum
The loudest thing I recall was shooting a .410 Snake Charmer without any hearing protection when I was about 14 or so a couple of years at a lake with my grandpas brother. However since that was my first time firing an actual long gun naturally I did not expect the recoil and I was never told how to actually shoulder it properly so the plastic stock hit me on my braces and my ears were ringing a good while afterward and long story short I wear double hearing protection when I go to the range and improved on my marksmanship skills thanks to my little lesson there and I still have fairly good hearing.
150 decibels. Airplanes flying over our campsite. 😂
loudest noise could be angrygrandpa farting.lol, seriously this was a good and informative video, i learned from this and gave this a thumbs up LIKE,
The loudest noise I’ve ever heard is when someone opens clash of clans on a bus
One time I was in a car that had a 10,000 Watt sterio system and the bass was sick, it made it hard for me to breathe. My chest felt weird.
The loudest sound I've ever heard, well theres two, and both compete for my number 1 spot.
13 Years old (Early 2000s) A severe thunderstorm rolled into Oshawa lasting for a while, my mother and I along with a friend decided to watch the lightning on the front porch (under a roof) and then a huge bright flash of lightning happened (lit up the entire street like it was daytime). The following crack of thunder was so loud it scared the crap out of me and even made the windows and wood parts of the house shake.
The other one would have to be about 8 years ago (Age 16), filling up my bike tires at a gas station on a hot day, a truck filling up the stations gas tanks had one of its tires explode (heat and defect failure?). I thought something exploded like a gas tank or something. Considering how close I was (the Air pump wasn't far from the filler holes in the ground), I'm surprised I wasn't hurt or killed from the exploding tire shrapnel, or made permanently deaf by that.
The loudest sound i've ever heard was the monsterous thunder clap that followed the single lightning strike that hiy my front yard
I just wanted to know how loud Uvogin had to shout to kill one of of the shadow beasts
You know how I found this video? I saw a popup ad on Facebook from Walmart (actually a Walmart affiliate called Cozylife) offering a 200db car horn called "KKmoon Loud" for $32. I wanted to see if there was a video of this horn in action as I thought maybe I'd buy one. Thanks to your well done video, I now know this horn is bullshyt and I won't ever be reeled in by any horn claiming to have that high a decibel.
I don't know what the loudest sound I have ever heard is, but I am deaf, so I know that 115 Dbs is equivalent to the sound of a whisper to me.
the jet powered semi truck "shockwave" from about 300 feet away is the loudest thing I have ever heard. look that thing up its f***ing amazing
the only thing that made my ears ring was only one time when I popped a bubble in bubble wrap right up to my ear. (I have been to rock concerts, drag races, and air shows with jets)
The loudest noise? _My classroom._
*So noisy I couldn't even hear the thunder or the hard rain outside.*
The loudest sound I've ever heard was probably a massive in-cloud lightning discharge that occurred right above my head when I was standing outside enjoying a storm. The discharge was very dim so I didn't think much of it. Not that I could have thought about it, because less than half a second after I saw it I heard what sounded more like a HUGE explosion than a clap of thunder. The bass was incredible. I could feel the air pressure blast hit me and heard it rattle all the windows in the house. My ears were ringing for about a minute afterward, but I'd do it again in a second. It was intense!
The cruelest non lethal weapon would just be some one putting nails to a chalkboard through a microphone leading to huge speakers.
Funny story about firing a 12 gauge shotgun next to an ear.
I was out shooting with my Dad, just as he was telling me to snap and raise the shotgun when I see a target fly over, I snapped the shotgun shut and hit a pigeon flying overhead. My Dad, who was less than a meter to the side of me at the time, didn't have his ear defs on and couldn't hear for a while, his voice went all funny too...
Been exposed to the LRAD ( long range acoustic device) and artillery as a former 13B in the Army. I'm 25 and have a little tinnitus in my left ear constantly.
loudest noise I've ever heard was when I clicked singing out of my friends browser history
I once went to an air show where the fighter jets were doing a mock dog fight. at one point one of the fighters flew by very very close to the ground at very close to super sonic and was probably the loudest thing I've ever heard so far
Have a friend who's a US Marine Corps Infantryman and he told us that on deployments they don't use Hearing Protection, so one day while he was back we took my Rifles and Pistols out to the ranch and we shot about 1,500 Rounds of ammo using no ear protection, I have a Fostech Bumpski Stock on one of my ARs that allows me to bump fire (Rapid Fire) and to be honest it wasn't as bad as I thought it would be, sure my ears were ringing for the first few shots but as time went on my ears adapted to the sound and it was like no big deal.
but how did some popular criminals fire bullets from shotguns,pistols and rifles and they have only slight deafness?when my dad was in 2nd year of high school he and the rest of the 2nd year went to shoot some ww1 guns at a shooting range (probably was some sort of drill in the case of a war breaking out or if you get attacked so you can defend yourself.also he was in a pretty small school so there were only about 90 students in total in second year) without ear protection and he said he had tinnitus for 2-3 days straight and wasnt able to hear basically anything,but after that he was fine,and even today his hearing is excellent .
Loudest noise I've ever heard was DuoLingo Owl killing my family.
I feel like this is the channel to go to if you are questioning humanity.
The loudest.. was a demo van i helped build for sound competition.
168.1 db @ 31 kilowatts of power connected to an array of subs and full range speakers.
'Noise hates you. and noise can kill you.'
I lost it
the loudest noise i have experienced has been in a night club. So when i went to a concert i put cotton wool in my ears which dulled the sounds at first but then i got used to them and could hear the concert normally. When we left the concert and i took them out my ears went back to normal. As opposed to leaving the night club when i had ringing in my ears.
My father was a carpenter builder and had to use nail guns in an underground car park they were building; he has permanent hearing damage that is quite significant.