How to pronounce “buoyancy” in English

In case of an emergency evacuation of a submarine, you need a suit that can balloon up with air to counteract the pressure of the deep ocean,and that can provide buoyancy helping you shoot up to the surface.But you also need to be able to put it on super quickly.

And they have four legs and a little lure between their eyes.1,500 pounds of buoyancy.

We've all tried to kicked down and you're like, whoa, I'm not getting anywhere.Till about neutral buoyancy.

"The thing about wearing a space suit on Earth is that it's designed for lower gravity.Even being in the Neutral Buoyancy Lab's pool didn't change the fact that gravity pulled at me.Sure, it didn't pull at the suit, but inside, I slid around every time I change orientation.

In terms of displacement, that tells exactly, with a submarine, how big it is because ithas to be able to achieve neutral buoyancy.So basically an aquarium of that same volume, 2,300 pounds-- there's some one person vehicles that weigh that.

And before you can even go out of the International Space Station to do a space walk, you will spend hours-- hundredsof hours underwater at the Neutral Buoyancy Lab at the Johnson Space Center operating and kind of fixing or doing whatever it is you have to do on that EVAbut in this underwater environment.

And I found some of these.And they need to understand buoyancy.

If they started flapping while the robot was still trapped under water, they would break right off.So, the buoyancy from the gas helps bring the fragile parts of the robot out of the water, but the robot is still stuckin that top layer of surface tension.

I think we're-- Absolutely-- and it's always been interesting to me, the diversity of different interests that can get you involved in space.We have people who work in the Neutral Buoyancy Laboratory, a big swimming pool.They're divers basically, but they're help-- they're technical experts in helping you learn how to do a space walk.

So this is from "The Faded Sky." And part of the reason that I'm reading this section is because it takes place in the Neutral Buoyancy Lab,and I actually got to go to the Neutral Buoyancy Lab and watch a full dev run-- development run-- with an astronaut.And the astronaut, Kjell Lindgren, said when he was inviting me-- he was like, do you want to-- do you want to come and watch me do this?

If you have to, in emergency mode, you can be in there for 72 hours.I'll show you this video which shows you the Neutral Buoyancy Lab that I spoke about earlier on in order to prep ourselves to get to the field the summer.

If you have to, in emergency mode, you can be in there for 72 hours.And then we took ourselves to the Neutral Buoyancy Lab, which is a pool which is over 60 feet deep.

And we were using double hose regulators, which people don't tend to see very often anymore.We were still using some old buoy finzy buoyancy compensators, and some standard masks and things.And of course we're tethered.

more compressible than seawater.So on the deep dive we lost quite a bit of buoyancy just on that compression.Also we needed a new cabin.

of it in it a lot in what you might call terrestrial activities and so I would go over to Russia and fly MiG's or 0gflights or do the simulations of a spacewalk in the neutral buoyancy lab take centrifuge rides that sort of thingbut then finally we now do have the ability to privately go to space and you know in my mind if I had to think of you

the capability of actually enhancing putting focus on a natural environment.And they would do it in this-- what's called a neutral buoyancy chamber in Huntsville, Alabama.

Anyway, so there's lots of stories told about sea silk, also known as byssus.use their chamber, their shells as a buoyancy aid, but like chambered nautilus they have air inside their shells, which they use to keep them floating

And not only were they swimmers, but they could get enormous.Because once the shell is no longer heavy, now the shell carries its own buoyancy with it, it can get arbitrarily large.And so cephalopods literally rose above the competition.

They were really tremendous throughout the hundreds of millions of years that they lived in the ocean.And for most of this time, they all had these big shells that carried their own buoyancy around with them.And so they were sort of freed up to move wherever they wanted, to be as large as they could possibly evolve to be.

And then they'll kick.And you have to kick hard to get down, because you're dealing with positive buoyancy.We've all done that.

Just past this depth, he will enter into a negative buoyancy zone.

They got initial lessons to understand their physicality in the water, buoyancy, and start to condition them to look for the exit

Pirelli provided the rubber tubing and wiring.Agip, the national petroleum company, provided the buoyancy material, which I didn't get to.But this underwater balloon, of course, can't use helium or hydrogen for buoyancy, that doesn't work underwater.

He exhaled until his lungs were nearly empty to find out what that did to his buoyancy.

Now that's great if you wanna stay on top of the water, but this barrier can also be a problem if you want to go underwater.To escape this trap, the submarine splits water into hydrogen and oxygen and then stores these gases in a buoyancy chamber.It does this because the wings are super fragile.

And Claudia has had a pretty phenomenal life playing with gravity herself as a diver, experimenting with her body's buoyancy in the Indian Ocean;

So, you know-- so everything is ruined now.So this is from "The Faded Sky." And part of the reason that I'm reading this section is because it takes place in the Neutral Buoyancy Lab,and I actually got to go to the Neutral Buoyancy Lab and watch a full dev run-- development run-- with an astronaut.

So for example, this is just a list of some of the quirky experiments that he undertook, seeds in salt water, sea buoyancy,

So in terms of this playground, that's why just looking at all those orange balls can inspire in us a sense of playful buoyancy.

That's it. You put them in water, and the buoyancy, they come back.

We've all tried to kicked down and you're like, whoa, I'm not getting anywhere.They're super relaxed, their heart rates down, they get to the bottom plate, they pull the tag, and they have to kick back against that negative buoyancy.

Agip, the national petroleum company, provided the buoyancy material, which I didn't get to.But this underwater balloon, of course, can't use helium or hydrogen for buoyancy, that doesn't work underwater.So oil floats on water, why not fill it with petroleum?

Cheng: Mine is slightly negative. Historically, manufacturers have not paid attention to buoyancy, and they should. Video housing manufacturers do pay quite a lot of attention to buoyancy.

And the other benefit of using a rebreather for photography and videography is that as you breathe, your buoyancy does not change, because thereís a counterlung. You exhale

and waddled into the water. When Cousteau was chest deep, he stopped and lay face down to gauge his buoyancy with the tanks of air on his back.