What Keeps Liquid Nitrogen Cold??

[@javadkhusro]

Hi Nate, the insulation you see is called Cryogenic superinsulation, which has layers of metal foil for reflecting thermal photons separated by polyester to reduce conduction between layers. The lab I work at uses it to insulate our dilution refrigerator. For the black pellets, I believe they are activated charcoal, and when cooled, will cryogenically pump by causing any remaining air in the volume to stick to the surface, trapping the gas so there is no convection either.

[@ellespoonies]

Fascinating! Thanks for sharing, always fun to see comments like these from people who know way more than I do. (and often, more than Google’s slowly deteriorating algorithm can explain)

[@AmaroqStarwind]

I wonder if aerogels will be utilized more extensively in these sorts of applications as time goes on.

[@B.r.i.a.n.1]

Love youtube comments on occasion, was hoping someone would know. Thanks!

[@thefool4492]

It warms my heart that if you look up making liquid Nitrogen the number 1 search result is still TKOR's video on his homemade system from 7 years ago. Very glad Nate is still making wonderful science content.

[@puginator2711]

He's keeping the spirit of TKOR alive. Sad to see the current state of TKOR, but it's good to know nates still going strong and making nice, fun, educational content like this.

[@PsyCho-zi5ou]

Then that girl and the kid ruined the channel. The girl even had the audacity to post vlogs

[@christiannorf1680]

A very important safety note is missing: The most dangerous part is that liquid nitrogen produces about 700 times its volume in gas when it evaporates! If not done in a well ventilated area, the danger of suffocation is really high!

[@ezkillionaire3276]

This channel is so cool. You've come so far Nate! It's been fun to watch your channel grow!

[@dnielbloqg]

2:41 I don't want to be "that guy", but the red thing you're highlighting blue is the liver, the stomach's on the left side of the body right behind it

[@Shawn-l3q]

And yet here we are with "that guy"

[@CothranMike]

I'm sure this comment was for a different video?

[@syntaxusdogmata3333]

@@CothranMike 2:36

[@CothranMike]

@@syntaxusdogmata3333 oh, nevermind...

[@Gonxp12]

You're wrong. That's the penis

[@ReelandReload]

Very interesting! Thanks for showing us!

[@jaspergoesrawrr]

This is so neat!

[@milanstevic6196]

Finally nate nice video

[@7-ten]

..................................👑 Long live King 👑 Nate!

[@Bubba-23nineteen]

Nate i love when you upload science adjacent videos!

[@imeqa5409]

great vid!!

[@SuperCloneRanger]

The plastic neck is another layer of the insulation, a metal neck would cause a thermally conductive path between the inner and outer chamber.

[@joebo9378]

I want to get into liquid nitrogen and have a couple questions. 1. How long can you keep liquid nitrogen in the container? Is it for long term storage (months) or more like you have to use it within a couple weeks? 2. How long do these containers last if full? Like do they expire and you need a new one every year?

[@ZeL-iq5sf]

didn't expect to catch an nfti video early today

[@rolar321]

Thank you for using centigrade.

[@Paul-044]

Bottled spring water is the best for Cirkul water bottle. I have a blue stainless steel one I use.

[@MattSimmonsSysAdmin]

Super cool video. I had never thought about what the inside of the dewar looked like, but this is awesome. Thanks for doing this!

[@bmich281]

Get it? Super cool! Liquid nitrogen.

[@leobro6398]

The issue I have with circul is that you cant use the bottle without the flavor thing at the top. And you have to throw away quite a lot of plastic to change them. Its purposefully designed that way so you have to keep buying them. But its not very eco friendly

[@rosedruid]

Plug holds the atmosphere out instead of the lack of air in. Lol.

[@ThunderousMuffin]

I’ve got a 230L Dewar for sale if you need a replacement haha Pretty awesome to see how these work 🤘

[@Zeldur]

Now I want to see a liquid nitrogen container scanned by Linus's fancy scanner

[@RaziAvel]

New NFTI is always an instant click for me

[@benboldt1]

You should find a sidekick; someone you have good chemistry with like that guy that broke your skeeball screen.

[@KillianTwew]

There are three sources of "parasitic heat": Radiation - The shiny foil stuff called Multi-Layer-Insulation helps keep this out by causing black body radiation to partially reflect off the surface of the shiny foil. Each bounce causes that radiation to lose energy. There are usually like 20 layers. Convection: Vacuum, duh. Cant transfer heat if there is no heat to transfer. Conduction: plastic tube conducts heat much less than stainless steel. Probably PTFE, idk I'm into cryogens not dewars

[@foot1221]

I'm a bit worried you didn't explain the leidenfrost effect enough. If your hand is cupped instead of sloped downwards then there's a pretty serious risk of causing freezer burns.

[@justinpyle3415]

I like how you can condense O2 by evaporating nitrogen. Id like to know if you can just poor a bunch of liquid O2 into a cryotank and cap it off to let it pressurize itself

[@christiannorf1680]

The metal foils will probably be there to reflect infrared radiation. In a (perfect) vacuum the only way of heat transfer is by radiation. It basically keeps the IR from outside out.

[@Cinnamon_Shaey]

Please make more videos instead of shorts....i get so exited when i wee qn upload, just to see it being a short

[@SamTheBattleshipp]

This was a cool video! (Pun intended 😁) really neat. Also, the beard is looking nice!

[@davidgannon5388]

Poor little Dewar... It thought it was doing such a good job, but then Nate got curious!

[@sumduma55]

Those things are expensive too.

[@moonliteX]

Aaaand that leidenfrost effect is why it's not as poverful as oil for tempering steel

[@RichardHopkinsLobosSolos]

Hmm, Cirkul I might have a few of their bottles.

[@moonliteX]

Oh noe 6:40 peter shripol style electroswing

[@leon_the_professional]

"It's a liquid, it's clear like water, it has no flavor" _I think I might have an idea for a future video_

[@brantwedel]

The plastic is to keep the heat/cool from conducting up the spout. I can't think of anything other than plastic that could be used for that,.

[@glasslinger]

Fiberglass. The EXPENSIVE 6 month holding time dewer I have uses a fiberglass neck. It is much sturdier than the plastic. If the neck breaks while the dewer contains liquid the whole tank can explode when the nitrogen hits the outer wall. This can happen if the dewar is dropped when it is full.

[@kylo7229]

I love your videos

[@Sadenshard]

Question on the sponsor: has anyone ever gotten this much out of 1 pack?I set mine at 5 and typically get aprox 2 1/2 bottle per package.

[@mrscary3105]

I am loving watching this channel grow.

[@AJ-Palermo]

I work in a shipping warehouse, and see liquid nitrogen containers almost every day. They're used to ship.... something that comes from bulls.....

[@heftylunatic]

Well now hold on Nate, how do you know it doesn't have a flavor? I'd wager that because there is so much nitrogen around us at all moments that we are blind to the flavor.

[@BradleySmith1985]

I think those plastic pellets that you pulled out were Desiccant beeds used to help Drop moisture from any remaining air to make it have even more vacuum pressure.

[@justinbanks2380]

While I want to see the inside, I'm also kinda crying based on these crazy costs (at least for me) of them

[@Imakecapcuts87]

I was drinking out of my circle water bottle while he said that

[@BibawiNathaniel]

From one Nate to another, I gotta say I love this video and this channel.

[@ObsessionVideos]

You highlighted the liver in the diagram, stomach is underneath🤣

[@MaxGiganteum]

-- Damn it Jim... I'm a KZbinr not a doctor!! - Max Giganteum

[@MoxxoM]

1:56: But doesn't that happen to a hot knife too?

[@falcon_fighter8711]

Yes but as it boils it cools the knife down as well and since it is in a pot of it the boiled gets replaced by more cooling the knife

[@bvoyelr]

Oh man, the next wave of Trendy Water Thing is out already? That weird smelly water flavor thing flamed out pretty quick, apparently!

[@ByteBitson]

nah, cirkul existed longer than the smell one, they sold it at walmart for god's sake they're just advertising on youtube channels now

[@hanifarroisimukhlis5989]

@@ByteBitson 100% took advantage of some other brand's downfall.

[@madeintexas3d442]

Cirkul isn't half bad. It is honestly cheaper than buying energy or sports drinks and all of the flavors are great and they have a ton of variety.

[@garthor]

Does it actually have no flavor, or is it just that we can't taste it because of physical limitations of our tastebuds?

[@ecchikitty1395]

Music and LN? Not sure how to go about it safely, but how does the sound of a whistle change when it's super cold air passing thru? Does the tone of a violin change when well below freezing? How differently does a speaker sound propagated across a room of 'warm' air versus 'cold' air?

[@DoctorYT152]

I'm curious if the insulation was replaced with kayawool would that work and would it be less or more effective?

[@ramalingam1304]

The flavoured cartridge of Cirkul is not completely recyclable tho.

[@jaycooke84]

Love watching the little experiments you do like this.

[@brucemartini2288]

NFTI, is NIFTY😆😆👍👍

[@thelastoneee3741]

Way better then TKOR

[@corrpendragon]

Yikes

[@CaptainQ2607]

Current TKOR

[@Maidenless_guy]

Yeah, but he doesn't upload full videos often

[@chadscatharsis3287]

My German Lederhosen buddy lmao. I just broke Daniel's balls on the video he dropped today making fun of his Jorts. Cool Collab!

[@generaltim494]

i bet if someone made a new tank with aeorgel in it for insulation it prob be able to have a bigger volume tank inside

[@christiannorf1680]

Don't think so. Vacuum is fundamentally the best possible insulator. The insulation is mostly there to insulate from infrared radiation. In that regard, an aerogel would be vastly inferior to a metal foil and also very fragile.

[@psychosis7325]

8:22 I have long had a bit of personal gripe with the use of the term Vacuum in science education... I don't know why we seem to start kids with the big scary "Vacuum Of Space!" Almost stopping there instead of just jumping straight to talking about relative pressures and fluids more in depth. I reckon I was nearly 30 years old before I fully understood how a car engine really works in a proper intuitive way, just because the concept of vacuums was so poorly imparted upon me from so young and over and over. Honestly think vacuums and singularities cause a ton of issues. Even watching this video, my very first instinct was that there would most likely be nothing or there would possibly be some insulation, the activated charcoal pellets make a ton of sense now I see them, but I'd just naturally brain blank to the possibility of them or anything else being there as it is so ingrained into me that all you need to do is pull a ""vacuum"" and it is job done there is no more conduction just radiation you have to deal with.

[@eTiMaGo]

cool story bro. literally :D

[@KewneRain]

bit of an expensive video this week, but pretty neat

[@imjody]

New sub here for sure. :) But I can't for the life of me remember where I've seen you before. Can someone please fill in my brain; it's hurting it not being able to recall what other channel you were/are a part of, Nate!! Lol.

[@jwk_6445]

Kings of random!

[@ljre3397]

That was actually very interesting. Thanks.

[@nanaki-seto]

Im betting the plastic pellets are in there just to help separate the layers of material

[@glasslinger]

The pellets are an adsorbent to scavenge air to preserve the vacuum.

[@birdstrum1555]

Hold up. How does humanity know liquid nitrogen doesn't have a taste? 😶

[@christiannorf1680]

By understanding how taste receptors work and trying a tiny bit to be sure :)

[@MaxGiganteum]

-- EVERYBODY knows what nitrogen tastes like... it tastes like nitrogen! 😁 - Max Giganteum

[@miklossethnikolajsen3198]

The water got dull so he needs to sharpen the water.

[@nezpierce_]

oo no step drill bit

[@naejelangelogonzales6623]

Cool

[@ViperMusashi]

Just wanted to point out that youtube keeps showing me your candy cotton candy shorts - do you still have that? can we do more of those?

[@josephbennett3482]

He still has it , he uses it often.

[@LucasJackson_37]

I've seen people cryo-freeze metals, such as baseball bats and pew pew barrels .. with the claim the aluminum bats after done are more durable and have more bounce (trampoline effect) than a normal bat .. I have no idea if that's true, but would love to know the answer Nate

[@olafnew]

Microcrystalline effect. It has a name - "Cryogenic tempering". In a DIY shop - a really good effect is on a HSS drill bits - just put them in a dewar, pour some gas, let them sit there for 10-20 minutes - the drillbits get noticeably better and have more longevity over the same, but untreated ones.

[@TheToastPeople]

7:59 Jeeze had to skip most of the video

[@cfgonyea]

7:29 Nate’s edging the dewar.

[@VulcanTheConqueror]

If you put helium in the balloon instead of air, does it still shrink down flat like that? If so, that'd be a neat trick to have a stack of chilled, flattened helium-filled balloons that when thawed out, fly away.

[@m8sonmiller]

Is that a short-term storage method? Eventually the nitrogen would equalize in temperature and turn into a pressure bomb right?

[@christiannorf1680]

If you would tightly close it, yes. These ones are as you say temporary for when you want to use it. They usually don't even have a way to fully close. Bigger storage tanks have pressure relief valves.

[@NFTI]

Correct, you cannot seal these containers closed, they always are venting nitrogen.

[@mgratk]

I store my liquid nitrogen dewar in liquid nitrogen.

[@fgbobatammmmm]

Bro that's the waterbotle that my friend Josh uses

[@LenB4830]

how long will the container keep the nitrogen cold if the container is not opened and stored at room temperature?

[@olafnew]

I have a 40l cryogenic tank. Room temperature - MONTHS before it evaporates(when there is no tasks for it - it just sits in a cool dark place). BTW - you never, never ever, NEVER let the container, once cooled to cryogenic, get back to room temperature. They do suffer, and keep the cold less efficient, if there were cycling(empty container). One more really good tip - always keeping the external fabric sleeve on the container, in good quality container - the fabric sleeve is internally made up of thin insulation sheets(cryogenic insulation paper) - to keep the IR radiation OUT. The sheets are placed the opposite of the cold side, and yes, they are directional. When sitting in a room for weeks - the container underneath the sleeve gets noticeably cold to the touch, and for sure contributes to the longevity of cryogenic liquid inside. This all applies to LN2, LAr, LO2. LH2, LHe and others - require A COMPLETELY different approach. LHe specifically - as it is also somewhat superfuid no matter of the isotope. LH2 and LHe2 containers - have an inner container for the target gas, a vacuum layer, ANOTHER container on top filled with LN2, and internal insulation and another vacuum cavity on top. So it's a multi stage dewar. And they are extremely efficient. But please, NEVER mess with LH2 and LHe - not only because LHe is much colder than LN2, but it is also way more thermally conductive - even small spills give you immediate skin burns. Another safety concern(a really big one) - eye protection - almost any liquid gas will blind you for good.

[@TrueHelpTV]

You mean what keeps it warm? Because when you think about it, the liquid nitrogen is so cold that the container is really trying to insulate it so its warm enough to safely handle the container at all. Just an interesting twist on how to think about it.

[@WilburJaywright]

Using cryogenics to temper metal sounds like the kind of thing that could almost be too effective, cool to hear that it works! FTWDK, tempering is getting forged metal to cool down really fast, to form tiny crystals rather than big ones, so that it’s very un-bendy.

[@ssifr3331]

Kinda have no choice for the 'mouth' using plastics, they need to use some non-conductive materials. Otherwise, the heat from outside can creep in.

[@VoidBringer-ou6ip]

Hi Nate I recognize you from TKOR, why did you leave them?

[@kryczech]

That balloon thing was cool. I've never seen that before. Thanks.

[@jwing6269]

Yo

[@bengutierrez9074]

daddy nate

[@procrastinationincarnate6416]

I'm sorry, "it has no flavor?"

[@iainburgess8577]

the plastic pellets likely perform several related functions: first, by being low and heavy, they move the center of balance Down: very important in storing something that should Not tip. second, by being loose mass, they will absorb rebound forces during a fall or spill, slowing the container faster and to a stable position, so less liquid nitrogen sprays or is thrown out. finally, the rebound absorption also lowers the occurrence of cracking or damage to the dewar, lowering damage or spills from clumsy handling.

[@SirZechs77]

I'd advice against using gloves while working with the angle grinder

[@alch3myau]

ill tell ya what doesnt keep it cold.. a gaping hole in the container !

[@Produkt_R]

For how long can you keep liquid nitrogen in there?

[@christiannorf1680]

A couple days maximum

[@NFTI]

If this one is full, it will hold SOME amount of liquid for maybe a month. Of course it will be slowly decreasing the entire time.

[@nolanmorton6762]

Im a welder and my company makes these

[@WilburJaywright]

I thought it was 70% nitrogen in the air?

[@Aaron48219]

But how much of a vacuum is it?

[@TheM0JEC]

‘No sugar’ means they are just packed full of chemical sweeteners instead! No good for those of use who can’t tolerate sweeteners (or others who just don’t like the after taste)

[@sumduma55]

I see Stevia extract as an ingredient. There are several types of acids specifically singled out on the ingredients too. Their website is a mess.

[@MorriAelthyn]

Stevia, while more "natural" than other zero calorie sweeteners, is a relative of ragweed. So for some of us, it still sucks. 100% cane sugar club 🙋🏼‍♀️

[@christiannorf1680]

Those chemical sweeteners are orders of magnitude purer than anything you extract from natural sources. Strychnine, atropine and asbestos are all natural products by the way. Ever wondered if your ibuprofen grows on trees?

[@TheM0JEC]

@@christiannorf1680 Yes but sugar doesn't give me a sore throat for 3 days, sweeteners do!

[@christiannorf1680]

@@TheM0JEC Yeah but you are putting it like "Apples give me the shittings. Apples are terrible and nobody should eat them."

[@BuilderBob1]

9:49 "QIUCK SHOUTOUT". Really?

[@quinton1661]

No ear protection while using an angle grinder on metal? tsk tsk

[@ecchikitty1395]

While cutting in and finding out can work, can find out a lot by calling up the company that makes the bottle and just asking. Still cool to actually see, but get statements of certainty rather than speculation. 'I think these beads are...' or 'These beads are here for...'

[@Christopherbanegas-n3l]

Is it expensive?

[@v3xx3r]

How do you know it has no flavor?

[@feliciaostrom2216]

What happened to tkor

[@Alex-tq4jd]

Cool to see inside the tank, but the first half of the video is basically filler + sponsor. I was also kind of hoping you found safe way to cut open a cold full tank to see what would happen live.

[@sethcreech1014]

Jesus saves

[@caseygouge3126]

Nate looking rough like he just had a 3 day coke benge.