Mysterious 'dead water' effect caught on film

[NickMinaj69]

This wasn't "caught" on camera lmao. It was done in a lab.

[yermom014]

Wadder.

[MaicahRu]

I'm English so to me she just sounds American

[grendelee]

Hmmm. So some sort of wave dampener would improve your speed in dead water. But, i assume boats are already as hydrodynamic as wed like to make them...unless we are talking about ridges that break waves....hmmmm ....HMMMMM this is my thinking sound...HMMMM

[massacreman3000]

the effect is called dead wad derp and can happen when a glacier melts into the ocean and creates a less dense layer of fresh wad derp on top of the sea wad derp.

[Dhragonfly]

interesting. i hadn't even considered fresh water's effect on salt water.

[gearsmaster117lol]

newscientistvideo = gorden freeman

[deimos2k6]

che voce di merda

[RockTheOcean4me]

Cool video, had never heard of the phenomenon.

[futboleroR10]

@Biebersucksdick1 Well I think that somehow the water was poured in little by little so that there would be no movement in the water or maybe they added some chemical so that it wont mix. Thats just my idea.

[bongcouver]

@Biebersucksdick1 remember, the fresh water was glacial water at a glacial temperature, therefore it would be much colder but not as dense as the salt water even at a warmer temperature. That would help in keeping the two layers seperate. You would think that the warmer salt water from the ocean would rise higher than the colder water, but because of the salinity of the ocean, it remains below the lighter fresh water. Simple gravity at work. If both waters were the same temp, it might mix.

[bongcouver]

@Biebersucksdick1 salt water is heavier than fresh. exactly like water and oil.

[ganaschico]

wader

[savsci87]

love how intelligent the comments are

[LiveForHerLove]

this ladys accent makes me want to kill babys

[MegaHL123]

0:37 There's a bird in there!

[lesbiansaregoodandch]

i have to pee out some science quick now. DAMN YOU DR. OCTAGONAPUS!

[vreaulamatah]

lol i had that toy when i was like nine or smth

[zaphodb81]

She starts by saying it happens for no reason.... right before she goes on to explain how it happens.... confused much?!?

[JoshTigerTiger]

Wuddurr

[246superdragon]

blah blah blah watar blah blah watar

[trespire]

watuur

[mattinapie]

Damn Nature you scary!

[thecallofdiluted]

i need 2 piss now

[ThePyroenator]

Gorton takes shamu out for a spin!!!! (a slow one (dead water (get it?)))

[sloperdude]

Trolls always leave ignorance in their wake.

[mycurse333]

um wouldnt the mix of sresh and see water be called brackish.

[BenPup]

playmobil, the poorman's nasa

[solaris0909]

I think her native language is Russian

[EymTheStrongest]

Wader

[MikeM8891]

i like the playmobil ship with the Gorton fisherman and Shamu.

[MikeM8891]

i like the playmobil ship with the Gorton fisherman and his killer whale.

[ArubaSailing]

The girl is so nonotone

[Player01198756]

@ArubaSailing You mean monotone?

[EmperorOfMars]

LOL little lego man!

[whoeveriam0iam14222]

what did she have in her mouth when talking?

[theunforgiven6669]

@whoeveriam0iam14222 you dont wanna know

[ScreamDeadly]

@whoeveriam0iam14222 Probably marbles. You put a few of them in your mouth, then learn to talk clearly with them, and then it's much easier to speak properly when you take them out.

[trespire]

@whoeveriam0iam14222 Those would be Ice cubes of frozen wathuur

[Pr0m3theu5]

Ah, that phenomenon is also often seen within areodynamica. It's a real problem for airplanes entering Mach bigger than one.

[xrayrep]

I always thought that saltwater was denser than fresh water. That's why you can't sink in the Dead Sea (so I've heard!). The narator said that the fresh water is denser than the saltwater, and that didn't make sense to me. Can anyone with knowledge of the ocean elaborate on this?

[xrayrep]

@xrayrep - OOPS, never mind! I just listened to the video again and she said that fresh water is LESS DENSE than the saltwater. DUH! My mistake! Sorry...

[SqueakerAlpha]

maybe its an accent or a slight speech impediment. She seems to say bedder instead of better , and wader instead of water, but she speaks clearly and is well understood. Good science vid.

[FatherspaceX]

using lego as simple explaining...

[Davidbirtles1]

that upwards inflection the narrator has is annoying... makes everything sound like a question? sink to the bottom of the ocean?

[mszs]

Well, not to me. Each sentence ends with a down in voice after the up.

[tobesters]

Agreed - and it's "water" not "warder" - such a strange choice of narrator - otherwise I really like these shorts.

[BeeGrau]

ssoooo.... not actually 'caught on film' then, more 'recreated on film with toys'

[UsedWankSock]

<3 the cheesy music.

So nerdy :D!

[seriusjoEE]

talk dumb.

[teapotking]

lol "Saltyness?" she's a scientist and she doesn't know that should have been Salinity xD

[CoverdaleBlue]

What if instead of taking the mickey and wasting time with bitchy comments, you bought yourself a good dictionary?

"Saltiness" is also correct.

[PsycoMouse]

A point excellently delivered.

I think it was informative; rather enjoyed watching that as opposed to the other mindless time waisters I enjoy watching. XD

[xSubliminaLx]

saltiness*

[nightvisiongoggles1]

@teapotking

She's a narrator, not a scientist.

I blame the scriptwriter.

[billbreaks]

very interesting but why does the narrator have a rediculously annoying voice?

[skatehead37]

ya playmobile!

[clargdorp]

Water they talking about?

[nafun123]

hahahaha "WATER they talking about?" dude thats so corny its hilarious

[iscay666]

@clargdorp I see what you did thar!!!

[CarsOfGaia]

@clargdorp-What are you wave-ing about man?!?

[revolutionpm]

@CarsOfGaia lol

[weirdfishArp]

@clargdorp hahaha!

[KaptajnKaffe]

@clargdorp

I <3 puns

[clanOT]

please get someone who can pronounce water without being the most annoying voice in the world, thanks

[sobeita]

Is it at all possible that the narrator, as well as the scientists, live in a country other than America? If English isn't her native tongue, then her English is very good. Besides, the research itself matters more than the way she pronounces water.

[albinoshira]

I agree. She didn't strike me as a native English speaker because of her pronunciation of some words.

[ObliviuxProductions]

There are many different English accents in both the US and UK

[Alarindris]

@sobeita Judging by the last names I'd guess this is French.

[rathat48]

@sobeita No, that is a native american accent, her pronunciation is clearly caused by something wrong with her tongue.

[morza05]

@sobeita Man, research is widely done in all the world, not only in The United States. And yes, she pronounces "water" a little bit funny, lol.

[EpicLuca]

@sobeita Wah-derr

[CelticPoison]

@EpicLuca In California everyone you hear calls it "Agua", so shes doin' a lot better than us.

[RoboticusMusic]

@sobeita That's the aspergers for ya.

[powello69]

ACTUALLY THATS A MYTH YOU JUST STATED there, americans did use pencils but they flaked and the were highly flammable, they paid a high amount for a very impressive nitrogen cartridge pen after it was dreamed up not for its research.

[WhamBamThxMaam]

Yeah man it cost them millions of pounds for some salt, some water, and a peice of plastic and a computer program. Fucking expensive salt..

[ianrob1201]

Just for the record, the didn't actually use pencils. That would have been a really bad idea cos when the led broke on the pencil you'd have bits of pencil floating around everywhere getting into important machinery. Not such a good idea on space ship really.

[genganz]

ha lol yea they do, everyone still uses them now, think about it what is better a pencil or a pressurized ink cartridge? its a valid point your putting forward but i mean astronauts aren't so rough as to go breaking their lead whilst writing... i would hope...

[ianrob1201]

ok then, did a bit of research online and according to wikipedia (not the most reliable of sources I know) we were both wrong - it claims that both the americans and the russians used pencils, until some random inventer person sold his pens to both space programs. But neither the americans nor the russians but any money into researching the pens, just buying them.

[tinyjru]

Really, when compared to some of the things that America wastes its money on... a pen is rather useful.

[ltcurry]

wow, thats why boat designers went to 35 degree spit hulls and catamarans, also water will cavitate from a foward pressure or a hull in the water that resists water more than is caviatant. Dynamic fluid displacement is also eliminated with a foward bulb shape to displace any dead or reverse cavitation like on the USS Ronald Reagan. It has nothing to do with just fresh water.

[away5]

q q ele ta falando???

ta chinganu minha mae??

maderfucker!!!!

vaum toma no cu

[ltcurry]

WOW has anyone ever boated and heard of Cavitation? Where the rear end and prop hit less dense water or actual air for awhile as the wake catches up with the boat? Dee Dee Dee

It has nothing to do with fresh water.

[Brained05]

Actually cavitation is the formation of vapour bubbles by the prop. The dead water effect has nothing to do with cavitation; its about the wake. Creating a wake requires energy and on dead water the ship creates two wakes, one on the surface and one at the boundary of the fresh and salt water.

[Reggis420]

Cool.

[TranceAddikt07]

the narrator sounds like she's givin a blowjob..

[Edward1589]

Have some respect there, cunt. Do you click on videos to examine, find 'flaws' and comment on them in a childish way? If so, then you're a waste of oxygen.

Stay to halo3 & cod4 videos.

[TranceAddikt07]

seems youre one of the narrators gang of blowers.. i see no other reason why you'd be bouncin off like this.... Loser..

[Edward1589]

There is no link between your words, nor sentences; there's no logic in the way you express your thoughts. Be proud of yourself.

[jeannec1]

You just described 98% of youtube; I mean, you just described 98% of internet users.

[pravicpu]

huh internal/interfacial waves..

[patmathis]

That water can also cause submarines to plumit of shoot up. It has been the root cause of several misshapes and collisions.

[polishoak275]

I say just tell the wife to git yer arse down thar and man the oars better when the damn thing occurs or it'll be Davey Jones' Locker for the lot of ya. Arggh.

[Koroush51]

Wouldn't it be for the reason of the water molecules are moving slower because of the lower temperature?

[weylin6]

so you are moving along and this higher density wave under the water will slow you down?

[pyr666]

interesting.

[terrytubex2]

It's an accent.

[deucethemoose]

Maybe you should study the science behind the fact that you can't get a narrator who doesn't have a speech impediment.

[levlobotomy]

yeah, and the accent aint french either it sounds slavic

[TranceAddikt07]

i agree dude...

[flyffplaya]

COOL

[cronus616]

thats pretty sweet

[Anayo]

Fascinating indeed.

[nicora60]

omg awsome!!! (totaly BORRIIINNNGGG!!!!!)

[wavefool]

This is new to a lot of people. This is old to US Navy submarineers. It seems that the "tank sailors" have forgotten about bottom form and compression tables. Maybe since the focus lately is on temp and salinity they have jumped on the band wagon. Case in point: why does this situation occur in very deep water away from any glacial source??

Convergent zones? out gassing? maybe these "scientists" should actually go out to sea.

[imjtblanton]

Watch "Zero One Productions - Adam Lee"

It is my favorite video!!!

[hword07]

fascinating

[Mexican146271]

sdsa

[solidfart3000]

That's so cool! I never knew about it.

[AmaterasuBijou]

ahja...

[treskall1]

Cool enough video, although this woman's voice is REALLY FRIGGIN ANNOYING!!!

[peeenisss]

is this why, when i make doo doo in the potty, it bounces back up and hits me in the face?

[shanjega]

omg.did i actually learn sumtin in yt?i sure did!:)

[enegtoeneg]

lol nice accent

[ChaosCut]

Great vid, great science. But the grammar nazi in me must point out that it's 'salinity', not 'saltiness'.

[SecretSweety]

I am getting sick of this channel saying something is caught on tape and giving me a 3d animated diagram, because clearly that little blip of 'film' wasnt that descriptive.

[kenope]

WHY is so many newscientist vids unseeable to me? It says "This video is no longer available"

[techdawg667]

very interesting...does that same effect happen to scuba divers? I've encountered lots of heliosheaths when diving off the West Coast.

[KilalaMeow]

i > didnt > understand > anything

[GrilladApelsin]

fatta ingenting,antar att jag inte ska fatta

[daddyrizla]

conas a ta tu

[199108154031]

orka kolla på sånt

[BubbleButt88]

haan aur agar tum bhi ek ghair zabaan mein bolo ge tou mai bhi bol sakti hoon kisi aur zabaan mein!!

HA!

lekin iss baat ka koi bhi faiyda nahi tha -_-

[pa1pa1]

haan magar tum bhi wahi kar rahe ho :P

[caddyboy12]

thats pretty cool, but that woman has an annoying voice =/

[dm47]

agreed. her voice made me want to turn it off lol.

[cshcrazy]

this make no sense to me

[Locustx925]

hate the womans voice.

[Frizbiskit19]

ugh neat i guess not very entertaining though. I dont think that many people use youtube for education.

[BubbleButt88]

i do i do!

yesterday i searched for integral calculus =)

[kingpopaul]

the why you're watching ¬¬

[patcorndoggy]

cool

[Project25o1]

PMSL@ playmobile dude taped into a boat. Here's me thinking that scientists used very delicate scientific equipment.

I can just here the scientists say " Balls, we'll just tape a dude to boat"..I really did lol.

[frnnk]

if i learn something... i'm gonna be pissed..

LOOK! RIGHT THERE! i just learned something! now i'm angry!!!!!

[henrynzidane24an]

I just wanted to see a pretty picture...

[Paulientje1]

omg very interesting!!

now give me good movie please -.-

[YouSpamTard]

So whats new? I new about this already when I discovered the principle physics using my tug boat, playing in the bath tub. My mom turned on the cold water to fill the tub. I told her don't do that, it slows down my tug boat. She does not believe me. Also, does anybody know where I can get a rain suit for my tug boat captain like the one he has in this video? That tug boat captain rocks!

[HydroDC]

LMFAO ..

[tuesdaywednseday]

go india!

[hitmontonia]

no...

[Malllard]

Intresting but i couldn't listen to her talking all day i find her voice annoying (no offence to anyone)

[greencoke76]

very interesting :)

[Fran7iC]

uuhhmm

[medaa25]

Maybe you're related...:)

[SKiTzShow]

Was the narrator Daisy Fuentes?

[SharkDude1]

One for Mythbusters?

[pjbukem]

Yeah, i'm sure they could milk that one out into a 30 minute experiment and bore the hell out of us all yet again.

[InsanityRoaming]

0:43 lol. The Fisher-Price Happy Sailor has butchered Shamu the whale and is ferrying his fresh carcass back to Tokyo. I always knew he was a sick bastard.

[jesseinmontana]

Yeah Shamu had to die for selling Japanese spy secrets to the Yanks.

[roller348]

How do they color the water so that it maintains its composition and doesn't "bleed" into the other layers?

[Tipomef]

I'm pretty sure that they premixed it creating a solution, then poured it into the tub. It's a solution and I don't think that 2 solutions with different densities will mix very well.

[medaa25]

Liquids that don't mix with different density and color. Like oil and water.

[thegeniei]

lol colour doesnt make a difference. . .

[medaa25]

no-one said that...

[thegeniei]

Liquids that don't mix with different density and color. Like oil and water.

[medaa25]

and...?

[chrislawless]

layers of different temperature and salinity wont mix easily

[HardstylePsycho]

hows the cure for aids going guys?

[odysseas53]

Water hides many surprises.

[Tomcat537]

This should be hosted by Bill Nye

[vicchicago]

The boat in the experiment lost speed because it is too small to be carrying a killer whale not because of the wadder sawlteeness.

[Wenis64]

Oh god

[Blanco223]

Awesome! *****

[lynool]

WOAHDDER

[TheEnd1190]

Haha I think people like how she says "wadder"

[808Hawaiin]

Well we all know that this person didn't do very well in English...

[Blanco223]

Yet she still got through enough to teach you something... if you could pay attention that long. How long did it take you to right this comment exactly...?

[lvecsey]

even the oceans resist products and oil transport to the US