Going supercritical.

[@stoutlager6325]

2022 Nilered/blue: "I've been thinking a lot about fission bombs. The materials for that are really expensive but... I bought some."

[@jamesmnguyen]

That's for his other channel NileGreen

[@violahero4life]

Lmaoo

[@rusdanibudiwicaksono1879]

The challenge basically looking for affordable neutron source, though.

[@AVerySexuallyDeviantOrange]

“Thankfully, I had some spare aerogel and U-235 sitting around after one of my other experiments, so I just used that instead.”

[@AVerySexuallyDeviantOrange]

Reno Simpson Mr Ü-boat loves you regardless

[@AppliedScience]

Awesome!! I'm glad the chamber is serving you well. Your videography skills are outstanding, and have such a recognizable style. I'm also glad the chamber didn't explode on you :)

[@captainktainer]

Thanks for your amazing gift - this was a really interesting video and it couldn't have happened without you.

[@Arnogorter]

Ben, you're a treasure

[@ikli7710]

Applied Science Thans for the gift Ben🙏🏻

[@88Timur88Bahmudov88]

About rainbow colored cracks - you can find something similar in ice when it cracks after being removed from the fridge, try it

[@ronniebrown5769]

you’re a legend

[@retnikt1666]

"it didn't blow up and kill me, so huge thanks to Ben"

[@agenttatsu]

i scrolled past this comment right when he said it 🤣

[@sawsaw123abc]

Tanner FixIt same

[@SnowTiger45]

The Beads suffered "Thermal Shock" which resulted in them shattering internally. Those iridescent looking bits are the surfaces of internal fracture plains refracting the light. You can often see this in natural crystals (eg: Quartz).

[@matthewchandler7845]

Legit

[@davejones9469]

I figured it was that simple, but what about the colouration?

[@valeriereneeharper]

@Dave Jones he answered that.

[@davejones9469]

@@valeriereneeharper No, he explained the iridescent parts aka the rainbow of colours being refracted by the micro fissures, essentially. The yellowish discoloration of the pellets has nothing to do with that. Unless silica gel reacts specifically with heat in that way, which he didn't mention.

[@unbearifiedbear1885]

Yes, you can use light to show damage in glass in the same way

[@autonomousanonymous6310]

Ben: "it's somewhat dangerous and might explode if you aren't careful" Nile: *shakes it around in his hand while it's pressurized*

[@LARAUJO_0]

It won't do anything as long as the pressure is spread evenly

[@xlunaxlovex]

He lives on the edge.. All day, every day.

[@Fireheart318]

I love your name!

[@Drewski777]

@@LARAUJO_0 if 5 billion PSI is spread evenly in that chamber you think it wouldn't explode?

[@icecoldnut5152]

@@Drewski777 yes

[@BlackGryph0n]

15:05 Considering that opal is fractured, water-impregnated silica, the effect might actually be very similar to opal! The cracks are thin enough to refract light and scatter its wavelengths, causing iridescence (like in hummingbird feathers or certain beetle wings)!

[@harrietramos8691]

It's so beautiful! At 13:40 you can see a perfect example of Rayleigh scattering. First you can see a flash of blue haze (particles less than 1/10th of a micron = Rayleigh scattering) which quickly turns into 'white clouds' (particles larger than 0.5 microns) which is in the Mie scattering domain. You should try to shine a white light through it from behind whilst going through the Rayleigh scattering phase - the light should turn orange (just like during the sunset). It's like you have a sky in a jar.

[@maxboskeljon6440]

oh wow hey Black Gryph0n

[@BillAnt]

He made synthetic diamonds... and don't even know it. jk ;D

[@waterdrinker4839]

@@harrietramos8691 did you just completely copy and paste someone else’s comment

[@johnsonman6261]

It's so beautiful! At 13:40 you can see a perfect example of Rayleigh scattering. First you can see a flash of blue haze (particles less than 1/10th of a micron = Rayleigh scattering) which quickly turns into 'white clouds' (particles larger than 0.5 microns) which is in the Mie scattering domain. You should try to shine a white light through it from behind whilst going through the Rayleigh scattering phase - the light should turn orange (just like during the sunset).

[@Aquavenn]

Hey I’m a bit of a gem nerd, I know that there are other comments but I felt like giving you my opinion. Using silica and introducing it to high pressure and temperature is exactly how synthetic or man made gems can be made. Specifically I’m going to quote milky/greasy quartz first as it’s a silica that’s introduced to co2. “Milky Quartz is Trigonally structured gems are made of silicon dioxide, their full chemical compound being SiO2. Milky Quartz is a milky white translucent to opaque variety of crystalline quartz of somewhat greasy luster. It is the commonest variety found in pegmatites and hydrothermal veins. The color is generally caused by numerous bubbles of gas and liquid in the crystal. The milky color is caused by small cavities filled with numerous small fluids and CO2 in liquid condition. It is used as a gemstone, and also called greasy quartz.” Next this is how ‘titanium quartz’ / “aura quartz” is made. “...aura is created in a vacuum chamber from quartz crystals and gold vapour by vapour deposition. The quartz is heated to 871 °C (1600 °F) in a vacuum, and then gold vapor is added to the chamber. The gold atoms fuse to the crystal's surface, which gives the crystal an iridescent metallic sheen.” It seems the process is highly similar. Hope this helps.

[@bearmauro2393]

This gentleman knows what he's talking about. Silica is essentially glass, pressurizing and fracturing it like that allows it to refract light in such a way as you observed.

[@surajmath3527]

@@bearmauro2393 i agree to that exactly

[@IudiciumInfernalum]

Noice.

[@josephlieberman5324]

highly recommend any books or papers authored by "Kurt Nassau" [Gems Made By Man], [Experimenting With Color], [[Gemstone Enhancement]

[@johnkiss8804]

Wow right on, I mentioned above it reminded me of lapidary work I did in NC. Silver Topaz by the lb...

[@owenwhitman6616]

I love it when a scientist says "I have no idea what's going on." That's when REAL science happens.

[@zachreyhelmberger894]

Agreed! I have no idea what goes on with masks, viruses and vaccines.

[@ct6502-c7w]

@@zachreyhelmberger894 lol you're one of those anti-vaxxer/flat Earther conspiracy theorist nuts? 😂

[@theEVILone0130]

I'm a anti mandate vaccine. I disagree agree with forcing anyone to take something against their will. And seeing as how the vaccine isn't a true vaccine since it can't prevent you catching it, it doesn't prevent you from transmitting to another, doesn't prevent second and third time infections, and definitely doesn't prevent those in ill heath from dying so I don't see being a anti vaccine in respect to covid family of viruses. They have been trying vaccines since the early days of vaccine's. And nobody's found an effective vaccine yet so anti vaccine are just guaranteed to have avoided any potential side effects further down the road from now. Second i doubt that after 100 years of trying to find a vaccine for cancer. Around 40 year's for a vaccine for AIDS. And your gullible enough to think they came up with a vaccine in less than a year and it's savings lives?

[@abeq3392]

5

[@norbert.kiszka]

​@@ct6502-c7w are You believe in everything which politicians say to You? Yes, viruses are exists and still they can be used for political reasons. One year ago, most people opinion was war in Europe is not possible... Now they cant admit to this "mistake".

[@genildomiranda1690]

"and it didn't blow up and kill me so.." that's what I love about science.

[@yasyasmarangoz3577]

lol

[@alexandergaus493]

Kinda reminds me of chemics class in highschool ... The teacher was a genius but had kind of a short attention span+ a slow reaction time. First week he wanted to show us what rust is and how rusty metal could be cleaned with acid. Only problem: The metal pipe he used was to long for the container and while he was talking he stopped holding onto the pipe. "Here, boys, you see how the rust is completely consumed by the acid" the pipe and container falls flat onto the table " and how it's running along the table, with is save because of the barrier at it's sides - which are too flat for a liquid flowing with that speed - and now you all can see how my new leather bag reacts to the acid if you come over and look behind the table. Boy, my wife will bead. It was a birthday gift from her." Ok, Nile doesn't make mistakes like that, but how he explained things is very much like my teacher did. I hope, what I wrote made sense, especiay the sense I was among at, but my English is mostly self tought. So please go easy one, if something doesn't fully add up. 😂

[@yasyasmarangoz3577]

@@alexandergaus493 😂That was what he said?

[@alexandergaus493]

@@yasyasmarangoz3577 Exactly that or something to that effect. 😅 But very close. Was the very first class at that school after elementary, that's why I didn't forget it. He was my favourite teacher then and no other teacher came close to him. He also did teach biology and when he found out, I was very interested in building and maintaining complicated terrariums, he built one for the schoöl with me and a classmate from the scratch with a water part and a self-made filter system, real plants and so on for anolis sagrei and carolinensis , a turtle and a tortoise, small fish and much more. It was crazy. Well, my grades were not the best and I had to switch homes (lived in foster care and later in a home for 8 to 12 boys, 10 to 18yrs old) and so I had to change schools as well. But him I never forgot and he gave me that craving for knowledge about how things work.

[@yasyasmarangoz3577]

@@alexandergaus493 That's so sad to hear 😭. I hope he lives a good life now :) So just to make sure: He did say those things WHILE they were happening 😂?

[@mariekebuiter5986]

NileBlue’s channel in a nutshell: “he warned me that in theory it was kind of like a bomb and it could explode at any time, but it should be safe”

[@Jyukenmaster95]

NileRed: "I should take all the necessary safety precautions" NileBlue: -shakes the potential bomb- "it didn't kill me, so we're good"

[@solarisNT-v4j]

How did I scroll to this comment at the exact time he said that?

[@fiusionmaster3241]

@@Jyukenmaster95 lol

[@anhuman7022]

Lol

[@BoomstickFTW]

😂😂😂☠️☠️☠️

[@DrakeRiddle]

The rainbows look really similar to the rainbows found in stress-fractured Quartz. The rainbows are probably caused by the cracks made by a very high pressure environment.

[@thewaterfish4102]

DrakeRiddle hmm I wonder why the silica beads would have the cracks, it’s not like it’s under a high pressure and environment

[@IBustFatties]

or its from thermal shock

[@butterflygroundhog]

@@thewaterfish4102 well, technically, the silica gel could trap CO2 in its liquid form, which will rapidly expand during the decompression phase. This can cause a lot of pressure to build and make microfractures. Now, I don't know why the beads wouldn't explode randomly, but this sounds like a reason to me.

[@BeN0lf]

Those rainbows are called iridescence btw. I think the colours seen are similar to opal, even though Nile ruled it out, see opal is also made of silica.

[@mattmcmillan9245]

@@IBustFatties absolutely. When the CO2 is vented, the temperature of the fluid drops rapidly.

[@minorcomet282]

NileRed: strict and is usually safe NileRed Shorts: has a little fun, and edges the line of dangerous NileBlue: "I've been thinking alot about Neutron Bombs, the materials for that are really expensive, but..."

[@noctuabird]

NileGreen: CAFFIENECAFFIENEMUST EXTRACTPURECAFFIENEGOBOOM

[@purememes844]

@@noctuabirdyou probably already know this, but NileGreen is owned by a different guy.

[@fiusionmaster3241]

Lol

[@leeroyjenkins3474]

@@purememes844there is no nilegreen

[@WRAITHMANE]

@@leeroyjenkins3474there is a nile green, it’s a guy who uses ai to replicate nile’s voice, and uses it to create havoc (eg. making a nuke)

[@TheMobBuilder]

NileBlue: “I did a pressure thing and it didn’t explode so I shook it around. It still didn’t explode so I shook it harder. It was still fine so I came in with a hammer-“

[@shy-watcher]

And I didn't even know the pressure!

[@renicecream8238]

@Bluekib Nice profile pic

[@WillowK.]

@@renicecream8238 and @Bluekib you two have the same pfp

[@dragontuck966]

@@obnoxiousthings 😭😭😭😭😭😭

[@bobrich2234]

hey the reason its so light but its size is bigger isbc theres basically no matter in it just like large space voids

[@henrycgs]

NileRed: this is basically a bomb also NileRed: *shakes it

[@crocogile2352]

HenryCGS bruv Nile red didn’t say that Nile Blue did

[@VR_Miata]

@@crocogile2352 YeAh NiLe BlUe DiD nOt NiLe ReD

[@louis-philipsevigny9610]

😂😂😂😂😂😂😂

[@Fish-Popsicle]

@@crocogile2352 NileBlue IS NileRed, just on diffrent channels.

[@lolpop7799]

@@Fish-Popsicle r/woooosh

[@sympleton7439]

"This thing is practically a live bomb" *starts violently shaking it*

[@potatocheese9981]

Lol

[@dd-bk7nd]

✊𓂺

[@ScienceForeverKnowYourSciences]

Lol

[@joshuawilson7629]

syense

[@Brandon-vo1bw]

The cracked silica beads would probably look pretty interesting under a polariscope. Also having one is useful for seeing stress in your glassware so it might prevent the need to smash all your beakers again in the future.

[@joeyjoe303]

Nilered really needs this advice😅

[@cadinkdaves6844]

in that vid he talked about how using a polariscope in the beaker case would have been impractical because even if he missed one tiny stress, it could’ve been deadly

[@TheEmeraldMenOfficial]

@@cadinkdaves6844 We do it for planes all the time with microscopic precision, for both the windows and the metal skin… His point?

[@internetbodhi1009]

@@TheEmeraldMenOfficial time vs cost vs effort, all with risk factored in. To be 100% certain, that'd take a lot of time to check every beaker over 100%. Then you have to trust yourself, so some double checks are needed. This would take such an incredibly large amount of time and effort for little payoff, especially considering he'd need to purchase the polariscope. In the end, 99% certainty and hours later vs 100% certainty, very little time and less money just to buy new ones.

[@erinmac4750]

​@@TheEmeraldMenOfficialI always wondered how they did that. Thanks ✌️😎

[@clemensruis]

It's so beautiful! At 13:40 you can see a perfect example of Rayleigh scattering. First you can see a flash of blue haze (particles less than 1/10th of a micron = Rayleigh scattering) which quickly turns into 'white clouds' (particles larger than 0.5 microns) which is in the Mie scattering domain. You should try to shine a white light through it from behind whilst going through the Rayleigh scattering phase - the light should turn orange (just like during the sunset). It's like you have a sky in a jar.

[@spartanwar1185]

That may very likely explain why in his "making aerogel" video, at some point involving supercritical CO2, the chamber looked like it was lit with some kind of orange light, while on the other side from the camera there was a large white flashlight

[@clemensruis]

@@spartanwar1185 Yes, exactly. I also explained that on the other video.

[@nahfid2003]

Hmmm

[@luiysia]

omg awesome 😍

[@alexanderdickerson5836]

I dont know why I love Raleigh scattering so much. It's the coolest thing we see literally every day that approximately 0% of educated people have ever even heard of

[@jackmills5071]

Get a torque wrench for the bolts, one of the most handy tools to have.

[@FridgidIdgit]

And a bench vise

[@enjoyingthecrisis5931]

@@FridgidIdgit And a sheet of seaboard so you can cut and drill it into some cheap HDPE vice jaws to not mar everything you put in there without fiddling with wrapping it in neoprene sheet stolen from free tradeshow mouse pads or sheets of 1/2 felt. Advice from your friendly neighborhood armorer.

[@Kenionatus]

He'd still need to figure out how much to tighten it. The wrench doesn't tell you how many Nm you need to set it to.

[@jackmills5071]

@@Kenionatus make a mock-up of the same materials, wench it until the threads fail, subtract 20 foot pounds off of that, then you have a reference. At the very least, it would allow all of the bolts to be set at the same torque to prevent warping.

[@SeanBZA]

@@Kenionatus With the size of the bolts you just tighten them to the manufacturers recommended torque setting, from the datasheet for that diameter capscrew. Simplest method without torque measuring is to simply add a Belleville washer to the head side, so that when it is just flat you have a very well determined tension on the bolt. Probably a parallel stack of 3 washers with 10mm hole will work best there per bolt, giving a replicable tightening torque. This is common on things that need a set torque, but which are used in the field where you might not have torque wrenches available. Most common use I see is on electric cable joints, where you need a minimum contact pressure to prevent heating, and the washer also provides a small amount of compliance for material creep as well.

[@buffbeann]

“Let me pay for shipping” “no.” “But i-“ “no.” “Come on Ben.” “nope.”

[@MsHojat]

Ben is an amazing guy.

[@FunnyMemes-dr3se]

👍

[@stephen_l1474]

Thicc Fluffy and Bitter “Ben just let me pay or they are going to create conversation between us and make a comment about it” “Nope”

[@Hyperlooper]

Toss a coin to your Witcher

[@Rouverius]

"Look, I just want to...." "Ok. Byeeeeee."

[@StarSwarm.]

That multicoloured opal-like feature in the silica crystals is called the Schiller Effect. It’s common in a lot of gemstones.

[@DonnaChamberson]

I am sensually attracted to gemstones. 😩

[@fiusionmaster3241]

Cool

[@gen_edits]

@@alexyz9430 Gemophilia💀

[@anhuman7022]

@@alexyz9430 sus

[@SangreFriasBack]

@@DonnaChamberson Hank Schrader?

[@sarahmanier6782]

“It didn’t blow up and kill me, so a huge thanks goes out to Ben.” Agreed.

[@Smittel]

"I wanna make aerogel" \*makes 17 minute video of CO2 clouds\* Or in other words: how much i focus on my task every time i try to get shit done

[@Groxo525]

PYXEL yeah I wanted to see him make aerogel too :(

[@NileBlue]

Dont worry, aerogel will happen!

[@PGMP2007]

Very poor comment. Filled with envy.

[@Smittel]

@@PGMP2007 yea amazing attempt at analysis, Sigmund, but youre just a bit off.

[@vincenttrigg4521]

@hentai is 4 pedophiles Now I want there to also be a Nile Purple where he just does stupid shit lol

[@lochnessamonster1912]

When you’re tightening bolts on something like this, do one and then the bolt directly across from it. Repeat until all are tight. That’s the safest way with high pressure applications.

[@crf80fdarkdays]

Torquing them would also be a good idea

[@FastForwardPlans]

That is generally how you should do any bolt tightening, including your tires for your car.

[@thysonsacclaim]

You should do them in that criss crossing, but not all at once. You tighten one a bit, then the one across a bit. Problem he has is doing it fast enough.

[@tylerwright6006]

I feel like this man knows how to change his car tires :p lol.

[@Zawmbbeh]

same with drum heads!!

[@jonathandawson3091]

Watching Niles videos is like watching a suspense movie where you know the hero survived (because otherwise he wouldn't have been able to make and post the video).

[@callumleask2907]

Hello excuse me good person. I have not seen a new video for the last 6 months 😕. You have the most recent comment in my feed or howsoever. My intention is satisfying a curiosity, where has this individual gone. He's doing some cool shit.

[@austinmoreno8486]

@@callumleask2907 exactly

[@rexperverziff]

@@callumleask2907 watch nilered shorts

[@ae_bae]

But there still always some very small level of maybe not (in superhero stuff it like maybe this is the end of the storie) or like he did get hurt and like this actually from a long time later and he healed

[@PeterOekvist]

Died from the sideeffects...

[@ExTess]

This man put silicates into a pressure chamber and is suprised that he accidentally made artificial gemstones. Edit: The comments are a trainwreck and really aren't worth reading anymore, since the main antagonist who started it all has since left. Read at your own risk. Edit 2: 3 years later we find out he was banned lol. Have fun reading these

[@lucaslucas191202]

@Donald Kasper I mean, you'd have to argue for your opinion since there's a physicist saying it's a photonic crystal and another guy calling it a gem, both with arguments for their case. You just stated it with no proof

[@lucaslucas191202]

@Donald Kasper There's no reason for you to comment something and want people to believe you without proof. And now you think we want to pay you to hear *your* proof? Man, you just don't get it

[@lucaslucas191202]

@Donald Kasper Ay you get it now. Thanks!

[@monarchatto6095]

Donald Kasper we just wanted you to show links as proof? bruh

[@monarchatto6095]

Donald Kasper ok?

[@blubery.]

Nilered: *strict* Nilered shorts: let’s do fun stuff but also be safe! Nileblue: M E m E s

[@AsterSkotos]

NileGreen: CHAOS!

[@LetsGo_SVT]

@@AsterSkotos omg you watch it too 😂🤣

[@matthewdick3591]

@@AsterSkotos lmao i was about to comment something on that as well

[@ADIIIIIIIIIIIIIIIIIIIIIIIIIIII]

its the opposite

[@blubery.]

@@AsterSkotos and then theres nilegreen nilegreen: what the fuck im i doing

[@kevinradtke3767]

When I saw the title I thought: "Oh, hes making a nuclear bomb"

[@hachikiina]

same honestly

[@PunishedNegativeZer0]

If he was, would you honestly be surprised? At this rate he is going to create a human using only chemicals found within bananas.

[@sawyersimpson7233]

i thought he was going to do something with plutonium

[@FROSTBURG2]

Well, there is something called FOGBANK, used in some thermonuclear weapons, that apparently is an aerogel.

[@WowCoolHorse]

Cody barely made a joke about acquiring a nuclear bomb and the fucking dept of energy raised his lab so Nile would probably do well to stay away from that stuff lol

[@flyingthings5194]

i used to work in the compressed gas and cryogenic liquid industry. my manager told me of a story once where an entire semi-trailer load of liquid CO2 was lost because the driver left the pressure relief valve open, and it all turned into a block of dry ice. that sounded like fun times!

[@fredk.2001]

Vent valve more likely left open. Also, it can takes weeks to thaw out a trailer like that.

[@emeka62]

" It should be safe... buthesnotresponsible." LMAO.

[@matrixarsmusicworkshop561]

It's* ..

[@kashaf7880]

It's* ..

[@giigzin]

@@kashaf7880 no?? Wtf 😂

[@kashaf7880]

@@giigzin Yes*

[@emeka62]

1AngryCheese no?? Wtf 😂

[@MrLucky5001]

17:41 lol I didn't even notice this wasn't your main channel until you mentioned it

[@ricardasist]

Same as I just clicked the notification

[@HaloWolf102]

I got a notification with a channel I'm not subscribed to, but not the ones I actually have the bell enabled.....k.

[@di5963]

Same

[@uwezimmermann5427]

I also completely don't care whether it's red or blue...

[@raffaeledivora9517]

As a physicist I can tell you you made a "photonic crystal" out of those beads (that's the theoretical name of this particular object). What's happening is that the micro-cracks induced in the spheres by the stresses have a very fine and ordered (quasi-periodical) structure; as a result some wavelenghts cannot propagate through that structure and get reflected (the real underlying mechanism has to do with the regular structure creating a bandgap in the phonon dispersion structure of the material if I'm not mistaken, but I'm not an expert). It is through that mechanism that all iridescent butterflies get their colour, and indeed an opal is another sample of natural photonic crystal. Btw, photonic crystals are widely used in modern technology due to their very peculiar properties.

[@josephlieberman5324]

highly recommend any books or papers authored by "Kurt Nassau" [Gems Made By Man], [Experimenting With Color], [[Gemstone Enhancement]

[@Aphelia.]

"I'm not an expert" *explains everything so beautifully*

[@shabonsong]

fantastic comment!

[@clayw9905]

Could the properties be due to birefringence.

[@nothingisreal6816]

Donald Kasper Shut up, you're ruining the fun :(

[@suomeaboo]

Nice seeing this video featured in PBS Space Time! I've always wondered why supercritical fluids exist, and what they are like.

[@jan-seli]

"in theory it's kind of like a bomb and could explode at any time, but it should be safe!"

[@wesleymays1931]

"Buuut he's not responsible."

[@vincenttrigg4521]

☢️💥🙂

[@checksum00]

Well there's a relief valve if you remarked. Always put a relief valve on your shit under pressure.

[@waltersobchak7275]

Not the proper use of the word theory

[@pineapple7024]

Walter Sobchak Kinda is, though.

[@ikchess]

CO2 critical pressure is 1070 psi, so it's a nice observation that you'd see the phase boundary re-established where you did. I did my PhD looking at oxidation reactions in supercritical water (much higher temp/pressure so we need sapphire windows, or the like to be able to see the liquid/vapour boundary disappear) so was fascinated with this video - really good job of visualising a really interesting aspect of thermophysical behaviour. I might have been a little more careful with a pressurised container, though!

[@MegaShiney99]

Very interesting

[@wannabewallaby1592]

your work sounds super interesting! I'm pretty sure I wouldn't understand your paper, but I would like to see what happens irl

[@tzisorey]

"It's kinda like a bomb, and could explode at any time" I was gonna say that you're gonna be on a list, now - but lets be brutally honest... You've been on that list for YEARS. ;)

[@tzisorey]

@Kyle Collins Definitely

[@hauntedhunter8377]

@Kyle Collins sorta hard to avoid these days. I was streamin' some classical the other night. There came a knockin' at my door. I answered it. It was two Men In Black. One said, "We are required to inform you: we are aware of your recent activity." The other one said, "Especially tonight." They turned to leave. "Wait," I said. "What do you mean?" As they went out the first one said, " You were listening to classical music." I said, "So?" "So," he said, "We have you on a Liszt."

[@TheFuryal2]

@@hauntedhunter8377 i needed to read that 2 times to get it. lol

[@michaelzheng5250]

Michael Austin *Ba-dum tsssss*

[@hauntedhunter8377]

@Michael Zheng --- Thank you, thank you, & good night. Donations appreciated! Except for Donations of Constantine -- unless John Constantine. No original Magna Chartas, either. The Brits would Hunt. Me. Down. To the End of Space & Time. & then do excessive things to my mind, body & soul. I quail at the thought. Gamble's Quail, in fact, plus the odd bobwhite. No dove, though, or partridge.

[@Meewee466]

I love how he goes from being really cautious with the chamber to shaking it violently like 10 minutes later

[@CasabaHowitzer]

"It could explode at any time and it's kind of like a bomb but... it should be safe."

[@historyatwar6230]

Yeah its safe I thi...... BOOOOM!!!

[@BloodAsp]

Chopping ice this year, I fractured a chunk such that a fissure crack inside of a crystal clear block produced a rainbow. I thought it was either acting as a prysm, or the prospect of it being a thin film interference made me giddy. The effect was beautiful! So glad I had my camera, though pictures never come out as good as real life. The internet made me do it: imgur.com/gallery/8WDdHkm Enjoy! I would be curious to hear why people think it is either a prysm or TFI effect we are seeing.

[@bads]

Link to the picture

[@jadeblades]

Could you upload them to an imgur album and send us the link?

[@wizzerd229]

Woah

[@pooounderscoreman]

Pics or it didn't happen 😉

[@wheeler2137]

I want to see these pictures

[@lichewitz8905]

I get so freaking hyped whenever there's a new video!

[@Stuntman707]

This is actually really cool to see on KZbin. Something that usually is done behind closed doors in a windowless chamber. It's all well and good studying graphs and reading text explanations, but it's so much better to see it changing state and going supercritical in person.

[@DanteTorn]

13:44 "Mirror mirror on the wall, show me a random pile of silica pellets."

[@joshdeighton8636]

Dante Torn lmao

[@skylerdickson2939]

this is a great example of an excellent comment

[@maddog7795]

The Disney quote is magic mirror on the wall not mirror mirror

[@pemo2676]

@@maddog7795 Shut the fuck up

[@joshdeighton8636]

maddog you gay

[@RapierNeedleCrime]

I love how nonchalantly you mention that it could just explode in your face

[@josep43767]

I believe that is because he records the narration separate from the video. It's easy to be casual if the thing you're talking about doesn't directly affect you.

[@sas3dx]

Take a look at steam trains explosions images

[@KooblyK]

Chemists cannot feel fear

[@johncrowerdoe5527]

@@josep43767 Grew up hearing stories of steely eyed engineers casually talking about the death toll (thousands) if the thing next to them explodes, and steely eyed craftsmen talking about near death falling on construction sites. Most of those family members lived into their 80s or more. Knowing and talking about the exact dangers you face helps you to deal with it and come out alive.

[@abyss5037]

New title idea: “Playing god with the properties of state changes with the ever looming danger of a pressure filled acrylic glass bomb going off in front of my face for views”

[@eertikrux666]

He would get twice the views

[@monirhasan3248]

Alternative title : I found liquid-gas

[@beepbeepcasucha]

You really fit your username

[@QuinnEthanR]

I think you're forgetting that my man is doing this for fun AND for views

[@Yora21]

Not for views. For science!!!

[@juancorrearuiz5366]

Hi Nile, thank you so much for showing this. I have been working with supercritical CO2 lately to foam polymers. I agree with you about the microcracks forming when rapid depressurizing your chamber. When doing so, the fluid expands so quickly that the silica cracks. I think the coloring comes from birefringence. This is very cool to see. Looking forward to seeing more of your videos!

[@NightRunner417]

0:19 - Unintentional epic demonstration of how the gravitational constant simply _does not care_ how massive a volume is with regard to freefall. Same envelope, same rate of downward acceleration. It's elegant.

[@sourcandy_account3632]

i mean you could bought two bottles but the other one is full, and the other one is empty and drop it down.

[@ScienceForeverKnowYourSciences]

Thanks Mr scientist

[@ardenfaust2527]

This was a really nice way of describing what I was thinking in less caveman speak, thanks

[@just_a_dustpan]

Woah you’re right! I didn’t realize but that’s so much cooler than I thought!

[@olimincraft]

@@sourcandy_account3632 There would be a difference in acceleration, as the difference in mass would impact how easily the bottle would go trough the air

[@FrostFire2002]

I love science cause anytime that the phrase “it didn’t blow up and kill me” is applicable means there’s som cool shit going on

[@thedescendedangel]

If I poke with a stick will it explode- scientist guy I gueass

[@awareqwx]

@@thedescendedangel Azidoazide azide will blow up if you look at it funny

[@TomKappeln]

Nile : "Going supercritical ..." Me : Waiting for 2 Plutonium half balls and a screwdriver ...

[@juno4127]

Thats exactly where my mind went when i read the title

[@beesandwich3366]

@@juno4127 same

[@NightskySkyler]

@@juno4127 SAME

[@speedslayerr]

Great nerd reference

[@cholm2070]

Not quite, but you got the spirit of it

[@bvbk8]

It looks like the liquid slowly changes refraction index, until it becomes invisible to the eye. Stunning

[@GMCLabs]

Ben sure is a nice guy isn't he? He's gotta be one of my favorite youtubers, really wish he made more videos. But I'll take the quality over quantity.

[@verdatum]

Exactly. I happily support him on patreon and don't mind at all when he goes silent for a little while, because he always comes back with something amazing.

[@xenonram]

@@rlev5398 dude, gtfo with that nonsense. You've spammed this video with your stupid begging.

[@thecodewarrior7925]

@Ring Ring wait whaaaaat?!?!

[@checksum00]

Definitely, Ben is one of the rare KZbinr that I'm sure he's not slacking or dropped off the face of the earth if he doesn't post for 6 months. His videos are so high quality, I'm actually surprised he managed to make so much of them.

[@RCichard]

4:25 - Two words for you from your mechanic buddy Trikie_Dik.... TORQUE WRENCH! Hardware has grades or classes (depending on imperial vs metric) and those all have set torque specs where the hardware can be set to maximum tightness without causing damage. Keep in mind your host material being clamped may not be able to withstand those max values - but you can do some trial and error, find the key value for your application, and repeat those steps for future iterations of the same test.

[@joshuataylor2497]

Nile : he wouldn’t let me pay for shipping That’s wholesome

[@chessbae5138]

Yeah i loved it

[@dorgan8777]

You have triple 6 likes as of the making of this comment

[@ratatouilledrinksclorax9897]

You have 969 likes Edit: i ruined the number lol

[@pureprogress9359]

He just knew he was going to get exposure on his own channel that's why he gave it for free

[@xaqvr9151]

@@pureprogress9359 fuck off

[@GemstonePhilosophy]

The rainbow iridescence is just light refraction between fine fractures. Light is passing through the fracture, but is split as it reflects off the conchoidial fractures (between the fractures). Opal has a similar iridescence, but opal is reflecting light through water trapped in its crystal lattice. There is quartz which is sold as jewelry and trinkets which have been stressed to a point of internally shattering. It is often referred to as "crackle quartz". That's pretty much what you have created :) Edit: as for the discoloration, would bet that it is carbon which is trapped in the microfractures. I wonder if the silica (silicon dioxide) could have decarbonated the carbon dioxide under those supercritical conditions and trapped some of the carbon as a precipitate inside the silica. Just a thought. The only other thing that changes silica brown (aside from impurities) would be irradiation (such as smoky quartz), but I don't know that supercritical CO2 is radioactive, or that it would have an irradiating effect of any kind.

[@GemstonePhilosophy]

Speaking of cool minerals with water in them, have you ever studied the Fourth state of water? Or looked into quantum tunneling in beryl crystals (emerald, aquamarine, red beryl, morganite, heliodor, maxixe, goeshenite)? Super interesting subject for anyone interested in quantum physics, or mineralogy.

[@richardashendale922]

Here I was hoping he had mad some new type of opal that has liquid carbon instead of water trapped in the crystal lattice... ah well.

[@ahorseofficial]

@@GemstonePhilosophy I appreciate you for mentioning this. That was a super interesting read! I read that observing the hydrogen atoms being in essentially a superposition in the hexagonal tunnels could only be observed at near absolute zero temperatures (otherwise they could just appear that way through classical physics). I want a way to confirm the tests were legitimately done at such a low temperature, however. Do you have a website that could procure the actual data?

[@erinmac4750]

​@@ahorseofficialSomething I didn't realize interested me....I would be interested in that information, as well. ✌️😎

[@badmann7783]

Hey NileBlue, I really recommend using a torque wrench for future projects, where you want to be precise when tightening, to avoid unwanted stress and/or damage to the threading.

[@nooboftheyear7170]

I thought tgat exsct thing seeing thst one place that was leaking :)

[@robbwiersma2596]

It might help to use the correct tools as well. He used a Torx bit to tighten Allen hex bolts.

[@jamesrobert4106]

​@@robbwiersma2596Great minds and common sense. The two shall never exist in the same person 😂

[@brockrohlfs1701]

10:07 what if you were to shine a laser through it so that you could watch how the refraction changed???

[@Sandux930]

That's a good idea

[@_g_520]

This man doesn’t buy things itself, he buys the material for it and makes it for our entertainment

[@bruhmomment2999]

yeah

[@smass8586]

Try slowly venting it to avoid cracks to see if film interface or crystalline structure

[@fredk4745]

"Going Supercritical" Me: "oh cool he's making a nuke"

[@madladdie7069]

Yeah that's what I thought too. Even though I had recently read about supercritical fluids.

[@James-kd6kf]

That was my dad's thought reading out the title, he's worked as a safety operator at Hanford.

[@1224chrisng]

the FBI watching Cody'sLab be like:

[@Ruskaga]

An interesting experiment might be to first shine a laser through the enclosure when it's empty and then later when it's filled with supercritical CO2, and measure the difference in diffraction.

[@user-pr6ed3ri2k]

your coment has 42likes blweird

[@myspacemodulator]

This could be very dangerous with certain supercrititcal elements right? Simple light passing through certain elements in this state might not be very dangerous, but think about how accelerated photons do cause friction enough to do what we see lasers doing already. I'm willing to bet that stimulated emission of radiation on supercritical materials could be used to annihilate atoms in ways that with certain elements could potentially make glycerol trinitrate look like pop-its and nukes look like firecrackers Or do I just have an overactive imagination?

[@joeligma4721]

@@myspacemodulator Overactive imagination considering he had the lights on and there was no boom

[@giran4914]

@@joeligma4721lasers and light bulbs are different lmao

[@giran4914]

@@joeligma4721definitely wouldn’t be like nuke tho

[@ciscoslash9772]

15:05 I've done in this week 3 exams in nanoparticles and i hope Ican help you to find a way to understand this magnificent Phenomenum. I really think you made a nanostructured silicon without any Bottom up or Top Down method!! Here i go with a simple explanation about nanodefects! Essentially, the number of defects in a crystall is totally dependent from entropic factor: S*T. The defects behave like gaps in the crystall. More and more temperature you give to the crystal, more number of defects for volume unit you will have in it. Furthermore, the Si as been allowed to adsorb the super citical gas, and the molecules of CO2 have sattled in those defects and obviously on the surface of the bulk Si sfere. When you let the pressure decrease, the drops of CO2 stucked in the defects quickly became again gas, expanding their volume and causing billions of internal fracture in the crystall and, more important,*causing a big decrease in the grain size** . Now, the crystall has been probably nastructurated, the reflection planes are increased now in all directions and the step distance from one crystalline plane to another is decreased. Because of these, the electromagnetic band of the withe light is scattered a lot more than before, and can give a lot more intense Refraction effect, like a prism, all due to the little grain size of the Si (Or the crystall domain if you prefere) and you can see the rainbow on the surface (Refraction) and the brown color of Si is due to the changing of crystallinity in Citrine (partially). i can't exclude the diffraction phenomenon too. I hope you guys liked my explanation about this and i'm sorry if it is too complex or not grammatically correct. Put a like if you enjoyed!!! Big fan from Italy :-)

[@isodoubIet]

Some of the initial cloudiness that appears when you vent the chamber, depending on the exact temperature and pressure, might be critical opalescence. At the critical point correlation lengths go to infinity, so density fluctuations happen at all scales, so you get a whole bunch of Rayleigh scattering -- the same phenomenon that makes the sky blue. Probably also the reason for the cloudy layer between the soon-to-disappear liquid and gas phases.

[@KovacsAttila-ts3be]

I just learned about critical opalescence, and immediately went to see if anyone commented about it under this video.

[@finnthewastebin1503]

WOW this is so interesting man! Keep making stuff like this. You age inspired me to get into chemistry and I’m taking a class in it. Thank you for making these!

[@iamtiger8273]

I think that the effect of different colors in the silica beads after having them in the pressure vessel does have something to do with the effect that opal has. opal is made of Sillicondioxide molecules that got stacked in different ways under high preassure underground, these structures cause the light to shatter in wierd ways creating those interesting colors. maybe the silica in the beads also started forming these kinds of stacks of Sillicondioxide under the extreme preassure of the supercritical CO2 wich could cause the light to shatter and give the same effect that opal has after you took the beads out of the vessel. also, opal is made of hydrated Sillicon dioxide and seen the fact that you got those silica beads from some kinds of drying bags makes me believe that the silica in the beads was also hydrated, making it similar to actual opal.

[@scorinth]

A fun theory, but Opal is a bit more complex than just a silicon dioxide crystal. Silica gel is amorphous, so we could indeed see the formation of silicon dioxide crystals, but I doubt we'd see the metamaterial of true opal. It seems much more likely in my opinion that we're seeing thin film interference, either from voids formed in the silica gel as CO2 trapped inside tries to escape, or from the formation of some other silica phase inside.

[@The_Keeper]

So, he could accidentally have come across a way to make synthetic Opals..?

[@belarm]

I don't know anything about opal, but my first thought was "he made glass!" I'm dubious of this conclusion now, but given that silica gell is already SiO2, I could see the pressure coercing it into a crystaline state. IDK, just wild guessing on my part. Very neat, though :D

[@BackYardScience2000]

@@The_Keeper , I doubt it. But the light scattering properties of this affect looks very similar to the light scattering properties of opal. Though it looks similar, it's not the exact same thing. It would be cool if he could figure out how to do it though.

[@Laone08]

I came here to say something similar as I learned abt a opals, quartz in all color/forms in my youth. Unfort a memory issue prevents remembering much detail & i could be completely off base here but it did bring to mind a few questions abt other silica based products like if such a pressure device could make unheated glass or even amethyst (etc) semi-precious stones. I was also curious how pressure plus controlled cycles of cold & heat would effect other silica items, and even coal & bog peat.

[@lewismassie]

I've been learning about aerogels in my lectures recently, and got to hold some aerogel. It was really interesting to watch this from a chemist's pov. I look forward to your aerogel video (I hope it's before my exams in May)

[@ChickenYale]

Aerogel is old news

[@thecodewarrior7925]

@ChickenYale doesn’t make it not super cool

[@projectmanagersk]

Do you study A levels?

[@lewismassie]

@@projectmanagersk University

[@DontMockMySmock]

Around 10-11 minutes, i find it really interesting how you can see the index of refraction changing and eventually equalizing with the gas

[@snaeshaads8203]

10:52 "showing a little bit of pressure" *gage shows something like 25 bar*

[@tubeland344]

The gauge shows Psi, not Atm

[@ehsnils]

@@tubeland344 The black scale is PSI, the red is bar - and the top value was like 40 bar/500psi, so no the gauge WAS NOT BROKEN, it was perfectly OK.

[@jimwang4011]

the old pressure is good. just different range

[@paavobergmann4920]

critical point is 31°C / 73,4bar.....reachable, but...no joke

[@lunashi_e]

NileBlue: is interested in aerogel Also NileBlue: *makes a 20-minute video about supercritical carbon dioxide*

[@MrMartinSchou]

A bit late to the party, but if you're doing this again try adding grains of sand and a magnetic stirrer rod. That will allow you to really show turbulence in the super critical fluid.

[@dubbleyou248]

Good idea

[@ga5712]

It would be interesting to see a laser beam going through the fluids and looking at the refraction

[@epicguitar1602]

Nile: casually jostles 5+Atmospheres of pressure in one hand

[@osirisgolad]

13:42 Seems like you've managed to create a Stargate.

[@Chewyshoot]

"supercritical" is just such a cool term in general

[@StefanReich]

I am supercritical of your general behavior (just an example sentence)

[@TheMilmino]

It was supercritical that you made that comment.

[@_BangDroid_]

The word will take off any day now, it's at a supercritical mass

[@XxShOoTnDiExX]

I've been watching the videos on this channel for last couple weeks and I didn't realize this was the second channel! Excited to catch some cool videos on nile red

[@GRBtutorials]

My first thought when watching this was “Applied Science”... his videos are really good!

[@briangeer1024]

Man, everything we learn in high school is either a simplification, generalization or lie.

[@guy3nder529]

and none of it translates to real life skills

[@anotherguy1260]

Because kids in highschool are idiots incapable of grasping the bigger picture. AKA undeveloped brains.

[@jaxonm530]

@@anotherguy1260 bruh

[@SkinnyBlackout]

@@anotherguy1260 Not necessarily that. Most of the time it's just unwillingness to learn, lack of interest, which result in quick loss or poor understanding of acquired information.

[@sarahl.5050]

So true. So much of the math you learn in Chemistry turns out to be a lie once you get to Quantitative Analysis.

[@bpersun7]

Thank you! This video will be the perfect extension to my lesson on seeing the triple point with dry ice. High school chemistry.... love your work!

[@xXAlexbXx-hl9nf]

I wish my chemistry teacher used these videos damn

[@chrissachith]

nile is just straight up teaching chemistry teachers now.

[@TheRealKlinky]

I'm a Mechanical Engineer & have been working with supercritical CO² refrigeration systems for about 10 years now. We can see this anytime we want through sight glasses in the refrigeration system. We have to be careful to drop pressures too quickly in the liquid phase as we can form dry ice...fun!

[@bpark10001]

Comment about gaining confidence in the integrity of the chamber: High-pressure chambers and boilers ate tested by totally flooding them with water (or other liquid) and using a hydraulic pump to run the pressure at least to 1.5 times the maximum expected pressure, and verify that chamber holds pressure for 15 minutes without leaks. The reason for the flooding is that the liquid, in compressing only by minuscule amount, does not absorb significant amount of energy. Most of the energy is stored in the walls of the chamber, and if the chamber is rigid, that will be small also. it will be only this (small) energy that can be released if the chamber fails. To appreciate what can happen of supercritical chamber fails (where huge energy is stored in supercritical water, look at this video: kzbin.info/www/bejne/q6CaeZJ_gdhkp8U

[@Isometrix116]

“It could be kind of like a bomb and it could explode at any time... but it should be safe” Science in a nutshell

[@andrewong3724]

Why does it seem like he starts every vid with “about a (year ago)...”

[@christopherpham904]

This man put silicates into a pressure chamber and is suprised that he accidentally made artificial gemstones. EDIT: Don't read the comments, it's not worth it anymore and as of this edit it's been eight months of continuous arguments over the entire field of gemology because of this. This was just supposed to be a joke.

[@notkiwibird]

@@christopherpham904 bruh wtf, why’d you copy paste someone else’s comment lol?

[@Sandux930]

Research first, experiments later

[@CraftQueenJr]

Because he does stuff that takes about a year to do.

[@ButtreeBraan66]

Wow that was quite fascinating! I still can’t believe I’ve only just recently discovered this channel! 🤯 Your content is great! I’ve always enjoyed learning new things. Now, since I’ve discovered this channel I’ve been learning new things everyday with each and every video I watch! Thank you!

[@1Jamesinator]

This Comment is specifically to remind Nilered that it's "about a year ago" that he discovered the silica bead cracking thing and that he should do a video on it already

[@istealstreetsigns]

Why didn’t he mention that opals are literally formed from silicon dioxide and water

[@fspinacz]

I think the pressure gauge isn't broken, it just has a huge scale - notice that at the moment it moved 'a bit' it was at around 30 bar (pressure 300 meters under water)

[@peterhall9603]

On the button Robert. 1Bar = approx 1 atm so the gauge looks accurate to me.

[@BlackCeII]

There was probably liquid C02 in the pressure gauge intake, if he rotated the vessel so the gauge was on top, it would likely work.

[@arielpadasas]

The pressure gauge I think is ok, it is just in 350 bars range

[@eertikrux666]

Textbooks and teachers: NOOO, IODINE AND CO2 CANNOT BE LIQUID NOOO! Internet: haha liquid go brrr

[@jamief415]

Weak

[@bosh6604]

I think no teacher ever told me that they cant be liquid, but my Chemistry teacher also told me, that the way we are looking at an Atom sucks :'D

[@eertikrux666]

Bosh well, my teacher did

[@al23438]

fuck reddit memes

[@skycaptain39]

Wtf kinda textbooks are you reading? Also what teachers do you have?

[@michaelsorensen7567]

The light bending shifted as it went super critical around 10:40. That was interesting to watch. You can see the distortion on the back nut starts with a hard crease, which softens, rounds out, then disappears

[@lithostheory]

Who else thought that the thing in the thumbnail was a diamond?

[@vincenttrigg4521]

Thought it was some sort of gem but yeah

[@joshharris3040]

I sure did, at least while the thumbnail was small.

[@christopherbownes494]

I'm still trying to figure out what aerogel is. He didn't mention it. Or his exploration into buying it.

[@Vysair]

@@christopherbownes494 99% oxygen and 1% liquid or something

[@Vysair]

@@christopherbownes494 kzbin.info/www/bejne/d5ataqRqarWZepI

[@ptzish]

News Headline: "KZbinr accidentally turns silica beads into diamonds!"

[@toasty_ghosty190]

Donald Kasper they’re making a joke about clickbait articles

[@Soupie23]

KZbinr turns Silica into Uncut Gems

[@the_egg_]

@elli Seeley no

[@the_egg_]

@elli Seeley no

[@the_egg_]

@elli Seeley no

[@leakplugger93]

"Broken gauge reporting a little bit of pressure". looked like 500psi or almost 50 bar to me. Not what I would call a little bit lol. Very cool effect tho.

[@PikeSlayer69]

5000psi or more gets my heart pumping

[@imbackinthegame3611]

50 bars = 725,189 pounds-force per square inch so very impressive

[@hannankruger4315]

15:00 the stone "opal" is made mainly out of silica. That silica presipitates out of water and creates microscopic silica crystals that are joined together along with some water molecules. The wired color changing behavior that opal shows it called "iridescence" and in this case it's cause by light shining through the tiny silica cristals and then getting split as it passes through because of the tiny gaps between the crystals. Maybe something similar is happening with this silica beeds, but in this case carbon dioxide molecules got trapped inside of the tiny microscopic cracks that it created, and the light is getting split as it passes through because the gaps are just big enough to only allow certain wavelength to pass.

[@Cannotoad1201]

No opal is made out of microscopic spheres which are glued together with silica

[@hannankruger4315]

@@Cannotoad1201 what do you think the spheres are made out of?

[@Cannotoad1201]

@@hannankruger4315 you said they are made of microscopic crystals that are made of silica

[@stmisbehavin662]

11:47 NileBlue: What I wanted to see, was what would happen if I put something solid in the chamber, and how it would interact with the fluid. Me: *please be styrofoam please be styrofoam please be styrofoam* NileBlue: I happened to have some silica beads lying around Me: *nooooooooooooooooooooo*

[@dubbleyou248]

Oof

[@DavidSartor0]

Why?

[@garethrpratt]

Me too! Anything that would float.

[@h.r.9563]

But styrofoam is full of air so the pressure likely would've exploded it or compressed it

[@kendokaaa]

Applied Science and NileRed (well, NileBlue :P), two of my favorite channels. No bullshit scientific demonstrations at their best

[@AnnisAdventures]

quartz creates the same light phenomena when cracked. I believe it is a combination of the material, shape of the crack, and reflection of the light on the crack. Internals cracks usually show this better. I believe the principle of a prism reflecting white light into rainbow light by spreading out the light spectrum because of the shape of the object the light is passing through comes into play here too

[@tupera1]

Bit of future advice...if you need to tighten something with relative precision, use a torque wrench. That makes things faster, repeatable and mostly predictable. Also that pressure gauge is designed for gases only and was broke from either the liquid CO2 contact or over pressure/vacuum. You need a diaphragm to isolate the gauge from any liquid.

[@htomerif]

Aww, I really wanted to see something that floated on liquid CO2 interacting with it when it was supercritical.

[@BlacksmithGen]

Yeah me too, a bit of searching shows that maybe lithium could float in there, I think?

[@BackYardScience2000]

An excuse to make yet another video on the subject. 😉

[@natmath2576]

Go check cody's lab, he has a video about i if i remember well

[@htomerif]

@@BlacksmithGen Lithium reacts with CO2 to eventually form CO and lithium carbonate at room temperature. There's some inconsistent values of liquid CO2's density at between 0.77 and 1.1 g/cm^3. Going off wikipedia's 1.1g/cm^3, something like polyethylene beads should float. I think they might absorb a significant amount of CO2 though. I can't make much sense of this: www.researchgate.net/figure/CO2-density-and-phase-diagram_fig1_305733339 though it implies that the liquid density is something like 0.6 near the critical point and the gas is something like 0.3 near the critical point.

[@htomerif]

@@BlacksmithGen I think maybe the easiest way to make something with a density of roughly 0.5g/cm^3 would be to seal off a piece of borosilicate pipette. It *should* be able to handle the pressure if its small diameter, but no guarantees.

[@cali.delinquent9657]

When tightening bolts dont do it clock wise or counter clock wise, do it in a star pattern a lil at a time, (applies to changing a tire too)

[@xXAlexbXx-hl9nf]

Was looking for this comment

[@5bc500]

star pattern?

[@cali.delinquent9657]

@@5bc500 yup

[@phyokyawkhaing2251]

@@5bc500 basically, after you tighten your first bolt, tighten the bolt in the opposite position. It's called the star pattern because the way you tighten it is similar to drawing a star.

[@bryceanderson4864]

...and since he was concerned about under/over tightening the nuts, maybe use a torque wrench...

[@HauntedHarmonics]

3:07 "He warned me that it could explode at anytime, but it should be safe" oh okay

[@CookedMeat]

These are some really precious footage. I kinda feel impressed that science is no longer exclusive to scientists locked behind lab doors of cooperation or institutions. Instead people could conduct different scales of experiment, catalogue their observations and contribute to our species' understanding of this universe. And more amazingly, these results can be easily accessed via internet. Great video!

[@sabscientists2528]

10:15 did anyone notice the refraction of the two bolts at the back sort of merged while it was going supercritical? I think it’s so cool that the separation of refractive index goes away as well!

[@joinedupjon]

yeah got me thinking shining a laser through the boundry would be a cool visual... since you've got a see through vessel I guess you could also use refraction to plot some speed of light measurements for liquid and supercritical CO2 - someone's probably already done it... but I can't find anything on google.

[@_BangDroid_]

Bro, nice observation. I didn't see that the 1st time

[@phillip6734]

you could say that the pressure gauge wasn't "critical" to the experiment

[@sethamederat5841]

Do you mean wasnt super critical

[@kingpiggins292]

Haha funny yes

[@tylerwoodfield9807]

Bruh

[@kakary3161]

_:(´ཀ`」 ∠): the comedy was too much for him

[@caffeine7539]

Only a matter of time till he splits the atom

[@orcasarentwhales]

“Hey guys, I’ve been interested in splitting atoms for a while, but it’s always been pretty expensive.”

[@caffeine7539]

@@orcasarentwhales thats exactly how i imagine the episode starting! LOL

[@ElMilkyGUEY]

@@orcasarentwhales …..”so I bought some on Amazon.”

[@pablopereyra7126]

@@orcasarentwhales "Thats why I want to thank CuriosityStream for sponsoring this video."

[@tylerr5285]

3:48 the best way to ensure the nuts and bolts were tightened properly is to: 1. Apply some antiseize to the threads 2. Use a torque wrench, so that you can measure the amount of force applied to the bolts 3. Look up the proper torque value for the size of bolt threads and apply that amount 4. Look up the tightening order for a bolt circle so that the nuts are tightened in the correct order