Opening a Bottle of Liquid Nitrogen Under Water!

shoulda had a thermometer near the thing to see if the water in the pool was dropping

I love how you low-key show off your awesome pool with this video lol.

Nice recipe for homemade cold spa!

Gotta try that with liquid oxygen that is heavier than water!

What a interesting thing

Looks like the NO² is boiling before it can actually trigger a nuclearion point for ice to form. I suspect chlorine and salt both affect the freezing temperature of the water, too.

I'd be interested to see what happens if you turned the bottle upside down. As it is, there's just N2 gas bubbling out. Flip it to see N2 liquid come out. I guess that the bottle would quicly freeze closed under a cap of ice, or perhaps some kind of inverted snow storm as chunks of ice get blasted off. ice cold pool would be ideal. Now run an electric arc through the pool and make a giant vat of Nitric Acid.

The underwater drones are fascinating and so cool.

You guys are idiots! It's nothing more than a "dry ice fog machine"!🙄

Why didn't you monitor the pools temperature

You should have taken the temperature of the pool before and after.

This guy commits to intrusive thoughts but in a science educational version

Well, nobody can accuse this guy of being bright for swimming right above the foam where the nitrogen is coming out.

We have had one death in our chemical plant in close to 100 years with all the nasty chemicals we deal with and heavy equipment. You'll never guess what caused that death.

Very cool! Literally!
And the newest bar in "Dad Fashion" wearing a belt in the pool :)

Scary you actually thought it would sink. Maybe you shouldn't do this kind of stuff.

Not what I expected...

Was there any change in the pool water temp?

Did the release of the liquid nitrogen have any significant effect on the overall water temperature?

... and I see that I'm not the only one to ask this question.

Interesting, fun video. FYI, a count down ends at zero and liquid nitrogen is not diatomic. Cheers.

yes of course there were bubbles ... the liquid nitrogen was BOILING off in the chlorinated water .... it took so long because the volume of Liquid Nitrogen in the flask was substantially more than the throat of it could let out at one time so you essentially created a liquid nitrogen bottle rocket that was pushing itself down into the pool .. as it was pulsing while dispensing those bubbles it demonstrated a pulse jet design ... each large group of bubbles was nitrogen vapour escaping the flask .. each low set of bubbles was more water entering the flask to carry on the process ... now if you were smart and kept the flask on the pool side and ran a tube down to the bottom and had a small suction pump like a tire pump to start sucking the liquid down the tube .... the siphon effect would then keep pulling the liquid nitrogen out of the tube and boiling at the bottom of the pool you could also use a smaller flask as the nitrogen source and have a mix chamber to mix pool water and liquid nitrogen to create a steam engine to move a self contained craft around in the water ... above and below it ...

pity you didnt actually put any thought into the experiment ... and just wasted a lot of nitrogen so you could get an underwater drone ...

Liquid N2 just boils off as compressed gas do due to it boiling point.

No surprise there. Water is an excellent heat conductor.

Wondering if / how that experiment affected the pool chemistry

How much did the temperature of the pool water change?

That was a gas!

How much did the liquid nitrogen change the temperature of the water in the pool?

Butt-head grown up. He hehe hehe he . . .

This goes right under the categories - Do Not Try This At Home and Adult Supervision Required.
Seriously? Handling LN2 without safety equipment?

Fun - first, safety - last. Darvin award candidate.

Why not try it when the pool temperature is right at freezing maybe a different result

Did you hold your nose when you jumped in the water? Such a nerd

How much did the overall temperature of the pool change?

I'm a science teacher. I'm surprised you swam in the bubbles so close to the neck of the jar. I wouldn't have. On reflection, the thermal "coupling" of gas to skin is very different to the destruction caused by the liquid phase. And then there is the question of the adiabatic effect of what happens to the nitrogen temperature in the "boiling" action into gas. There's much I don't know about this:)

Probably hard on the inside dewar lining, suddenly going from 77K to 290K might cause expansion stress

I'm really curious about how much that lowered the temperature of the water in your poool.

The floor is lava!

Cool stuff, I like to get some Liquid Nitrogen in small portions for arts removal, may be you have the name of the supplier and phone number. Thanks

Bro has a massive house though.

You should fill it up with liquid nitrogen and jump in

You just carbonated your pool, so I suppose you will have to adjust its pH.

I saw a 10 liter dewar, much like the one in this video, form an ice plug from a water drip and launch itself about 3oo yards due to massive gas expansion.

I hope one day you can afford some swim trunks!

.............DISAPPOINTING,ONLY A SINGLE PIECE OF ICE

............THATS HOW ACTUALLY GREAT WATER'S THERMAL CAPACITY IS..........

While an underwater drone could be a cool way to see things that we're too busy holding our breath to enjoy when we dive in person, I think for most of us yours is a bit too pricey. Maybe advertise the $500 version?

It would have been interesting to have a hydrometer on hand.

Nitrogen mixes/dissolves/misces with water more when water is cooler. A hydrometer would tell us which one is occurring as the relative density will be less if they are simply mixing but ifthe molecules are interacting they will take up less volume and increase density.

Heavier water also allows a person to float higher or sink lower. It would have been fun to see whoever he is sink and have to walk his way out, or alternatively float like a cork, but all we got was a recording of a bunch of bubbles.

Relative density is important for humans in water. Most people know that dissolved salts in water make people float. Fewer know that people sink in carbonated water. Cave divers, including a friend of a friend have died from being unaware of the hazard, orthe oresence of diving in carbonated water.

But this was not an “experiment” it was just a lark.

A hypothesis or two would have been more fun, and made science of it.

I thought it will cause an explosion of some sort because of temperature delta

I wonder how much liquid nitrogen it would take to freeze a large body of water solid