Mystery of Prince Rupert's Drop at 130,000 fps - Smarter Every Day 86

"Goggle Up! Science is about to happen...Share by Tweet: bit.ly/YAsk8M Facebook: bit.ly/PrinceRu...
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Please help me justify putting this much time and effort into a video by clicking "LIKE" and SHARING this as much as possible. Click the following: Tweet: bit.ly/TweetRupert Facebook: bit.ly/PrinceRu... Please share with any science blogs or outlets you think would enjoy it.
Videos like this don't just happen. They require lots of time, and lots of favors from very smart and kind people willing to help me and you learn. PLEASE take a moment and read the following information and support those who supported me.
This is the camera we used for the ultra-high speed shots. It has the "FAST" option.
www.visionresea...
You absolutely have to check out the stuff Cal Makes. We're just goofing off in this video, but the guy is some type of glass wizard genius. It would make me happy if you bought something from him and he felt like the audience appreciated all the time he donated to this video. He basically gave me 2 entire nights of his entire shop.
orbixhotglass.com/
I feel like we're friends at this point, and he is open to the idea of doing more videos in the future and teach me more about what he knows about glass. Let's make it worth his time.
I'm a HUGE FAN of the song Gordon wrote for this video. His landlord would really appreciated if you downloaded it so he could make rent this month.
ashellinthepit....
It looks like he's assembling a new album that I may like more than Mammals:
ashellinthepit....
Show him some love.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This video involved about 2 months of research, and me reaching out to several individuals. I would like to thank everyone who took time out of their schedule to contribute to my wacky research. A big thanks to the following people:
My wife and kids. I'm sorry this took so long and I wasn't the kind of active father I want to be during the 5 weeks it took to make this.
Dr. Martyn Poliakoff for getting me access to documents which details experiments on the Prince Rupert's Drop by the Royal Society
rsnr.royalsocie... (behind a pay wall)
Being able to calculate the failure front velocity of a Prince Rupert's drop is a pretty big deal. For years this was a scientific mystery. High speed camera technology is only recently fast enough to provide data like this. Thanks to Vision Research for letting me use the V1610 to try to unravel this mystery for the public in general.
Rob Kuefner for reaching out to me and offering to convert certain equations into LaTeX format for me.
Dr. Jeff Evans from UAH. A friend and neighbor who just happens to have a PhD and be an expert in fracture mechanics. bit.ly/YLezDA Thank you for helping me by pointing me in the right direction in the early stages of my research. It's time we hangout again.
Brian: thanks for letting me use your green screen and telling me about Orbix in the first place. I stayed up there til about 1 or 2 am two nights in a row acting stupid in front of of the camera all alone. Now that I look back at that footage without the context of this video, it's all very strange.
Thanks to Loïc Samuel for taking time to make the custom TNT Degradation graphic!
P.S. There was some old guy walking around the track at the park when I was filming me jumping on the bridge railing. I'm pretty sure you kept walking until I was done just to make sure you wouldn't have to take me to the hospital if I broke my leg. I'll never meet you again, but I'm grateful for this kind gesture you didn't know I noticed.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Tweet ideas to me @SmarterKZbin
Instead of saving for my kids' college, I make videos using the money I would have saved.
The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for their education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO!

[@christianstelmakh]

Said a million times but THIS is EXACTLY what KZbin was made for. Thank you so much Destin, so so much. You're a legend.

[@VRichardsn]

Hey, is that Mark Anthony?

[@admmaximus]

Yes

[@z-beeblebrox]

So what you're saying is, if you somehow made a Rupert's Drop with a mile-long tail, it would still take less than a second for the whole thing to explode?

[@Owlpunk]

Yes. By the way: The ISS orbits the Earth at almost 7 times the speed of failure front :D

[@wesofx8148]

The logistics of making a mile-long Rupert's drop would be hilarious.

[@CrazyFunnyCats]

z beeblebrox what if the water to cool was boiling water?, and what if they used ice water ? Think they may work If the boiling water was used it would slow down the cooling and the molecular bond should be stronger .? At least it works that way with springs for race cars . We heat the springs and let them cool down very slowly in steel buckets of super fine sand.

[@sumaprasad5029]

how are you gonna do that

[@Atlantis357]

the "shockwave" would go through the drop at sound speed

[@Nonkel_Jef]

I love how you're casually holding exploding glass without gloves.

[@cherylcasio9401]

Or lung protection

[@tosrtv7591]

Rs😂😂💯

[@sgtjohnson49]

I like how the owner of the glass shop turns his face away from the exploding glass, exposing his ear canal to all the tiny bits of glass shrapnel exploding towards him.

[@higaddrip2583]

@@sgtjohnson49 is that not better than glass in your eyes?

[@sgtjohnson49]

@@higaddrip2583 it'd be better to wear eye protection, preferably a face shield, considering they're deliberating exploding glass. Then you don't have to expose your eyes or your ear canals to said exploding glass.

[@ittixen]

This is one of the best videos I've seen, in every category. Short and to the point, yet comprehensive, clear, wonderfully illustrated and animated, funny, creative... That's the kinda stuff that made me subscribe to this channel.

[@backwoodsjunkie08]

I absolutely loved the explanation with all the mini you's

[@zv3495]

The best xD

[@quranmcbride3468]

Facts

[@alek6362]

3:26

[@josie4065]

Haha that was a perfect explanation!

[@josephstalin8442]

Honestly made it so much easier to hmderstand

[@oskarvonreuenthal7732]

3:22 OOOHHHH so this is why some glass looks rainbowish when you wear polarized sunglasses. I've always wondered

[@dangleason9023]

Yes. Usually side windows on a car will have rainbows or patterns in them, it is tempered glass. While the windshield never has that effect because it's regular glass. Great observation!

[@Doxsein]

Nice observation indeed

[@shadymcnasty5920]

My tints in my car do this

[@thehandleiwantedwasntavailable]

My Dad sent me the link to this video 2 years ago. I never looked at the link at the time. Caught up In my own bubble; work, kids, life. I’ve clicked on his link today, which is the first anniversary since he died. Thanks for the link Dad. As you said, it’s very interesting. Rest In Peace. I miss you.

[@gavinsonsalla9319]

So since the front is moving faster than the speed of sound, I wonder if this could be considered a detonation instead of an explosion.

[@curtaustin8119]

The speed of sound in glass is about 2500 m/s, so not as fast. BTW, detonation is a type of explosion, but we have more profound semantic problems here - it's not clear where the rapid increase in volume occurs here, the usual definition of explosion. Just a lot of fracturing going on. The fracture of brittle materials is classically treated as governed by the strain energy required to create the fracture surfaces. That is, the energy goes into creating surface energy. Obviously, some energy is going to propelling all the bits, and is transferred to air as kinetic energy and an earth-shattering KABOOM!

[@luisrocha26]

@@curtaustin8119 that was a great and clear explanation, thank you!!!

[@nottoday3878]

I'm surprised government didn't weaponize it

[@JetFalcon710]

​@@nottoday3878 This kind of thing seems very hard to weaponize

[@OfelieArt]

Hydraulic Press vs Rupert drop

[@blackkissi]

it's been done already. search for it

[@felixb.59]

OfelieArt look it up, theres already a video of it on youtube. it's amazing. spoiler alert: it dents the press :O

[@tracewallace23]

20 tons of pressure

[@chettykowen]

yes

[@dusk4511]

OfelieArt It will break. There's a vid of it somewhere

[@sdrawkcab6283]

Prince Rupert, I don't feel so good...

[@vaneyes5137]

That was clever.

[@bullet_4_you]

😭

[@prismoth]

DARK APPERITION oh god puns

[@maruftim]

lol

[@imminiman]

please explain 🤔

[@SeanKL107]

0:45 "Kind of looks like a tadpole" Yup. A tadpole. That's what I was thinking too...

[@KanyeWelephant]

you just ruined the joke...

[@WartakMedia]

Sean Kratovil-Lavelle hahahaha

[@andrewborges7768]

there's always that one guy who has to try and ruin the joke lol

[@staytoasty7373]

SPEEERRRMM

[@OldschoolghouI]

spermm

[@MrHeroicDemon]

I can't believe this video is almost 9 years old.... I remember when this video came out. I'm still here watching and getting smartereveryday since this. Thank you Destin.

[@cyrillian13]

How did i get here from watching someone drop a red hot ball of nickel on ice?

[@KaZeRs]

Omfg, dont tell me from 9gag as well. I was watching RHNB before this too.

[@cyrillian13]

lol

[@jordanjohnson714]

Same here

[@jeffazi]

EpsilonBTS I'm not sure but I want to see the nickel on ice. Link? LOL

[@Banzay27]

EpsilonBTS linkage

[@chubbyninja842]

QUESTION What happens if you re-heat the tail end of the drop? Can you melt it down to more of an egg shape, preserving the strength, or will melting cause it to explode?

[@Enny_Gima]

ZombieTex Likely the melting would cause failure, because it would re-liquefy the glass molecules, thus allowing them to release their energy, causing the chained explosion.

[@calvinpham5547]

ZombieTex Can we make a bomb with this? I mean pack a lot of them into a vacuum sealed chamber with oxygen canisters and flammable fuel. Upon impact oxygen is release and mix with those exploding glass powder and flame...Just wondering

[@kendo512]

Calvin Pham I feel like you're on some sort of list for this comment

[@calvinpham5547]

This is a scientific question. It is difficult to make that many drops, and it's probably expensive. The internal explosion travels faster than a bullet. I don't think terrorist would want to build a furnace big enough for it. Risky to pack them, since one mishaps will trigger the rest to blow.

[@chubbyninja842]

kendo512 I'm probably on a lot of lists for a lot of reasons :)

[@snailsaredumb9412]

4:32 before Microscopes, people thought sperm looked like this, men in tiny capsules that made people

[@michaellange6598]

yes their called hymen heads

[@sergetys]

Wait, that’s not how it works?!

[@snailsaredumb9412]

@@sergetys no, it is. I was just lying...

[@sergetys]

@@snailsaredumb9412 oh, thank god. Phew! Was a close one.

[@elliottharris7496]

I got very spermy vibes from this part in particular

[@TwoCraZyEyes0]

what if you put a prince rupert's drop under a 100 ton press? would it break then? sounds like a job for hydraulic press channel

[@DERP0L0GY]

Been done, the drop doesn't break

[@tobyjones-worth5111]

that was a lead base. :/

[@DarkGharren]

I'm pretty sure it would break, and you'd need far less than 100 tons.

[@tryskacz]

it is done already ;) i found it on two channels at least :)

[@blatz4306]

search prince rupert's drop here on youtube. You will find the video that he did this. And the exploded in 20ton press.

[@eerereps]

3:26 perfect explanation! Loved it!

[@georgeofhamilton]

We should make a mile-long Prince Rupert's drop to see it explode in less than a second.

[@Nomaditis]

Its crazy to think thatDestin's videos that were made in 2013 has better quality than most of todays videos.

[@emmahacker4020]

He makes great stuff and he’s been ahead of the game in doing so Nerds ftw 🎉

[@DeadHawk23]

What happens if you make one that's way bigger?

[@nachtelfirokese88]

The exact same thing. Only that the breaking point/exploding point is far more away from the tip of the Drop.

[@dusk4511]

RedHawk Gamer Bigger explosion and more fun

[@Crecross]

Duxx Skuxx bigger explosion and possibly death😂

[@jamesdong8179]

Actually, I think it may collapse under its own tension because when it's bigger, you have less surface area to more volume, means less surface has to support more inside tension

[@Tds206]

then u have a bigger prince ruperts drop.

[@somethingtojenga]

Future mode of transportation--train car inside of a giant decompressing Rupert's drop. As you're inside, accelerating toward the Rupert's drop - "Railway ahead is warming up........ railway ahead is super-cooling....... explosive decompression in 3... 2... 1..."

[@productionmark]

Beautiful. Science is beautiful. Love your passion for it.

[@DragonSoulMusic]

What manner of sorcery is this

[@graphicos6327]

1k magina

[@awesomecow8092]

Tis' not magic, but purity of will.

[@collinbruce5933]

1b+

[@Cygnus0lor]

Physics granpa. It's physics.

[@chrisplays191]

I deliver thee unto death

[@ziadassaad1371]

May it be characterized as a frozen explosion? All of the internal tension waiting to be released due to the rapid cooling?

[@maeckz84]

Why are the glass fragments don't harm your fingers or skin while exploding? Aren't they sharp as hell?

[@fist3484]

As Jackson said, this sort of 'break' sort-of just disintegrates the entire thing.

[@winkyshy2]

neat trick with all the little mini yous going on there. but i bet buying all those red blue and grey shirts cost alot.

[@imBlook]

uhhhhh he only bought 1 pair of each color lol

[@Rafa-mc2zw]

that was a joke you dummie

[@unequaledone]

Bet it cost even more to clone himself that many times

[@SebHaarfagre]

Not to think of all the food consumption. Man, I don't think this is very sustainable.

[@notaprohmm3459]

May be he purchased only one tshirt and editing does all that

[@SonariNeiracchen]

So if I make a mile long rupert's drop, it'd only take about a second to explode?

[@Sure-]

yup

[@xayer5]

+Poo Face Don't you have to consider that the speed of sound is much higher in different materials? 1234km/h are just the speed of sound in air. The speed of sound in glass should be around 14200km/h

[@MazeFrame]

+Poo Face Measure the wave lengths in longitudinal direction. From that you can calculate the speed of sound. For glas it should be arround 5000m/s (=18,000km/h = 11,184mph).

[@SonariNeiracchen]

+Poo Face Also temperature and pressure.

[@SonariNeiracchen]

Of course we're talking approximates here :)

[@davep8221]

When I was a kid in the 60s, we had s subscription to a kids scientific book series. They came with a bunch of glossy color stickers that you would lick and put in the books in the proper places. In my day, that was called "entertainment." For a little kid it was a fun activity. One thing I remember to this day was a chapter on Prince Rupert's Drops. There was a pic of him standing in a noble pose, one hand on his hip, the other extended pouring the molten glass into a bucket of water. I wish I could remember the name of the series. They came in a slip container with a few volumes in each. They were simply constructed, just stapled together with the sticker bound in the middle. I can still remember looking at the collection many times and trying to choose which one to read.

[@Pinoccappuccino]

I found about this channel just today, but the cat convinced me. I have subscribed.

[@Dartnix]

4:00 this animation is everything

[@TheUnusualSuspect101]

Best explanation ever! Love the way you explain such complex scientific phenomena with creative and easy to understand methods. I feel bad for my Physics teacher now.

[@a.p.5429]

These videos never get old. I've shown everyone. Never gets old!

[@kimbonice]

Great vid! I'm laughing at the 452 dislikes on this. I'll never understand the people who aren't interested in science. You're missing out on a world of interesting things and adventure!

[@Ctuchik]

Stupid people doesn't like to be reminded that they are stupid. :p

[@kimbonice]

Ctuchik Yeah and they continue to use smartphones and things like KZbin though, which we wouldn't have without science & the innovation it brings lol.

[@kimbonice]

andefghi The fact that you had to make a generic profile to make a comment that shows that you don't understand irony nor how something as simple as this contributes to the science behind the manufacturing of things is hilarious.

[@Ctuchik]

andefghi Yay, way to turn a joke into an actual prof of point! :D

[@SoulTouchMusic93]

Ctuchik don't! Oh, the irony! :)

[@brasha78]

Nearly 2000 dislikes I just don’t understand that. How could you dislike this video. Was it because he thought when making it they were the first ones to do it but we’re wrong I would be interested to find out why people disliked it. This is right up there with electrical theory and speed of light stuff. Thank you for the video.

[@kristanorton2147]

You would make an amazing science teacher! You make it easy to understand and a lot of fun. Keep em coming!

[@GreydonIselmoe]

Wow... so the fracturing speed of Prince Rupert's Drop is Mach 4.83 ... Nuts. Imagine a jet flying that speed.

[@xxzenonionnex7658]

There are jets that go mach 7+

[@oofiousnien-thousand5923]

@rockn roll Number 1: North American X-15 This aircraft has the current world record for the fastest manned aircraft. Its maximum speed was Mach 6.70 (about 7,200 km/h) which it attained on the 3rd of October 1967 thanks to its pilot William J. “Pete” Knight.

[@samarthbhat7889]

@@oofiousnien-thousand5923 yeah but that was more of a rocket

[@sam_sibbitt6814]

So you’re telling me that glass is breaking faster than 3,600 mph

[@981porsche3]

6:25, the tension’s killing me, lol

[@jerryye8404]

After all the explanations he did for the Rupert Drop. What I got was "hmmm, it's hard"

[@bobDotJS]

There's a reason this is one of my favorite channels on KZbin

[@kriss1956]

LOVE your videos, learned about the PR drop, NEVER stop learning! But, please, use airway protection too. Those shards are easy to inhale.

[@TravisRichey]

This is fascinating! Thanks for the video, I had no idea that such a thing existed, but it's amazing to watch! ~Trav

[@flyingcod14]

Never heard or even seen this before. Every day is a school day. Go Prince Rupert!

[@Dyzzy001]

Do prince Albert next bro! hahahahahahaha

[@squawkback]

You're obviously too young to have experienced the Bell Telephone Science Series, which were 16mm films that were shown in schools in the late 50s. We got a brief exposure to Prince Rupert drops back then, but your experimentation really closes the loop on that. Thanks very much!

[@ElDuderino999]

One of the best explanations so far, well done!

[@Ucceah]

now what would happen, if you roll motlen glass into a ball before dropping it into the water? hypothesis: an almost indestructable marble

[@laurenceperkins7468]

Cuda FX I believe it's called "tempered glass". It's used for quite a few things.

[@Keinlicht]

Cuda FX Its not that you cant break the drop its just that the tail is so delicate it will always break first

[@granth4342]

"Can you show me how to make a Prince Rupert's Drop?" "no"

[@4zap7]

I know this video is old but I hope everyone is aware airborne glass particles can cause eye and lung damage. Let it settle or wear protective suits , still amazing video Dustin

[@dunebasher1971]

Science? In Alabama? You'll get chased out of the state for witchcraft.

[@7th.Chosen]

+dunebasher1971 rofl

[@chinchella3]

Well I guess you've never been to Huntsville, Rocket City :)

[@deanthemachine96]

+dunebasher1971 Well according to the book Destin referenced at the very end of the video, Exodus 22:18 would justify that and more.

[@mahendrakrisnamurti9599]

+dunebasher1971 then I suppose 793 people who watched this was from Alabama

[@TheDarkGamerHG]

+Mahendra Krisnamurti im from Fairhope, Alabama

[@FlVE]

can we make a Rupert's drop without a tail, a complete sphere which is near indestructible

[@gregparrott]

Great video. But at 4:33, you incorrectly state that 13,000 psi represents twice the pressure at the bottom of Mariana trench. The density of salt water is 64 pounds per cubic foot and this force is applied upon 144 square inches. (i.e pressure increase per foot of depth is 0.444 psi). Google says the Mariana trench is 36070 feet deep. Multiplying the pressure increase per foot of depth times the depth... 0.444 * 36070 = 16,015psi. In other words, you're off by a factor of roughly 2.5 (16,015/6,500 = 2.464)

[@andwilsaw]

Gregory Parrott you’re 4 years late bud. But.. umm... kudos for catching a mistake... I guess

[@woahdudeitsme9742]

Thank you very much for the visualization I was able to watch it without sound and understand.

[@JVirago]

This is cool! How is it not cutting you guys up?

[@almicc]

+JVirago Studios it shatters into millions of pieces. Each smaller than a grain of sand. It probably feels almost exactly like very strong wind, or water splashing up on them.

[@JVirago]

Interesting!

[@Sara-L]

+MachWarfareGames And gets embedded into skin crevices, clothing etc.

[@almicc]

Sara Llewellyn ouch...

[@MohammedHasanTHEYUGIOHMASTER]

+MachWarfareGames i saw another video about prince ruperts drops and apparently it stings a little when it explodes in your hand

[@DanZhukovin]

Now we know what inspired the creation of the Ford Pinto

[@SebineLifeWind]

THAT WAS TOTALLY WICKED!!

[@KN-hv7wb]

Did anyone else read this in the voice of the kid in The Incredibles? (You know, the kid who sees Mr. Incredible in his work clothes, when he's frustrated and picks up his car.)

[@blahblahtoucan5329]

😂 yes

[@JamieHigdon]

I am just now finding out about this Prince Ruperts Drop from watching a few of your videos. WOW! AMAZING!!!!!!!

[@haraldpettersen3649]

It's "old", but one of the best videos you've ever made. When the drop explodes I think of the Big Bang.

[@dougcheney4056]

How about doing in other liquids? Hot Water? Alcohol? Mineral Oil? etc etc?

[@oshaugh143]

Because they are all mostly a liquid at room temperature

[@shiningdawn8578]

Alcohol would likely boil off too quickly, given the very low boiling point. Mineral Oil would likely not transfer the heat as quickly, causing it to harden more slowly. Would be fun to see both... just to see.

[@edenfeathergreen8037]

If You cut the heated drop midair with a pair of scissors, so preserving the dropshape without a tail, would it be undestroyable through sheer force?

[@404killer]

+Eden Feathergreen dunno

[@teapots4103]

+Eden Feathergreen I had a similar thought...as if they made marbles, bullets, cannon balls out of this stuff it would make a great substance

[@moodragonx2]

+Eden Feathergreen if you pay attention to the video you can see that's exactly what they're doing. They're "cutting" the tail (with some pliers). What's happening is essentially the same thing you get when you have a rubber band pulled really tight. Cutting it causes it to snap and release the energy.

[@edenfeathergreen8037]

Nabil Zaman I wasn't talking about the already hardened drops, but the molten ones. So that when entering the cooling liquid/water it will be "tailless"

[@gogo311]

+Eden Feathergreen You could just melt a piece of glass on a spoon so it would form a drop, then put the drop into cold water. Indestructable glass.

[@dopeytripod]

it's 2019 and there are STILL little hidden shards of glass all over his face

[@magsan75ify]

I could not have found a better video explaining this. Loved it!

[@jagardina]

This is incredible. Hi, I'm new here, just subscribed. This would be an interesting experiment in micro gravity because you could make one of these things as a sphere rather than a drop. Imagine the strength if there's no tail!

[@Tempusverum]

Good observation. But putting a molten globe into floating water might be a challenge

[@Sara-L]

@@Tempusverum You would need to squirt the water at the globe or blow them together somehow.

[@BarbaraA.MertzRN-CCRN]

THIS is what the internet SHOULD be about!! Great Vid!

[@bryanbaird168]

Would love to see nail clipping at extreme fps! (Depending on the cleanliness of the nail)

[@1_____________________]

Is 1.03 miles/second the speed of sound in glass?

[@danlorett2184]

+Spiked Blueshell No. It does depend on the type of glass, but the speed of sound in glass (also known as the speed at which compression waves travel) is around 4500 m/s, or about 2.8 miles per second - way faster than the failure front in the video. That's because the failure front due to the release of strain tension is not transferred as quickly as compression waves are in a material.

[@TheVindicar]

+DeathMarch That's speed of sound in the air at normal conditions. Sound travels much, MUCH faster in solids.

[@skyydott]

Sound travels at around 340 m/s in still air, around 1500 m/s in still water, and in iron it travels at around 5000 m/s. In diamonds, sound travels at 12,000 m/s, which is the fastest speed that sound can travel under normal conditions.

[@larsvegas1505]

that would make sound travel about 1 km every three seconds.. or about 4.5 per mile in normail air.. thats why when ur on a football field u can see the ball being kicked before u hear the thump..

[@sherajussalehin7881]

speed of sound in iron

[@brianlagasse3561]

That video was fantastic. That was so interesting. Keep up the great work.

[@KingMCIV]

Can you make one 60 miles long and see how long it'd break? That would be sick

[@mrclancymac1]

KingMCIV u can work it out you know how fast it breaks

[@crixthetwix9235]

mrclancymac1 but it looks cooler when you see it happening rather than using math and calculations to estimate how long

[@ouwkyuha]

KingMCIV maybe we need some giant satellite of furnace, then we drop it to the sea.. that's sound promising long as 60miles

[@adamlooze99]

It would be sicker to see one 70 miles long

[@GoldenFlame3464]

Adam Looze Don't go overboard lad, we have to stay realistic

[@DystopicEdits]

Shit they should make a bullet proof vest with drops but with the tails completely protected

[@amandatran4207]

or melted offbor made in space so it won't actually have a tail

[@danielgriffin8311]

The drop part isn't actually indestructible, it's just incredibly strong for it's size and composition.

[@Invrexs]

stronger than steel, steel is bullet proof

[@domogdeilig]

20 tons, off pressure is bulletproof I would say

[@mousefoot]

if the vest were shot, assuming the bulb didn't shatter, the director would move to the tail and shatter it anyway

[@luisrocha26]

I'm amazed not only by the quality of the video itself, but also by how much knowledge people are dropping in the comments

[@hqdefault]

What if you make the Prince Rupert's Drop in liquid nitrogen?

[@Cailean750]

Why don't you just torch the tail off of it so it's just the drop with a super small tail.

[@peterwelsh6975]

Heat difference would shatter it.

[@urseliusurgel4365]

Prince Rupert of the Rhine lived most of his life in England. He was the son of The Elector Palatine of the Rhine and a sister of Charles I of England. As a young man he was exiled from his patrimony after his father made a failed attempt to become King of Bohemia, and became a 'Protestant Martyr' in the process. As a nephew of Charles I, he settled in England and served as a leading Royalist general in the English Civil War, he was especially noted as a cavalry leader. He later served as an admiral under his cousin Charles II. Like Charles II, he was very interested in science.

[@phaolo6]

The Death Star must have been built on the same principle XD

[@conscious212]

Fuck the science I'm just here for the slow motion

[@Gamex-Frontiers]

I love science, it’s my favourite lesson.

[@caseylockwood5512]

weapon of mass destruction right there...

[@Mushroommarx]

The mini you’s were kinda creepy but made me literally laugh out loud. Great video.

[@telotawa]

what if you dropped a near perfect sphere of molten glass into water?

[@ThatGuyMagnum]

Make a massive one, as in, a 1.03 miles long. Also, I can't wait for 4K 100K fps cameras.

[@KillaGrogan]

Apparently scientists are creating a camera that will be capable of capturing up to 1.2million fps. I don't even want to know how much they are going to cost though.

[@Mcflapphypants]

***** the file size would be immense :p

[@ThatGuyMagnum]

KillaGrogan They have one currently that can see light move. But it is really low res apparently. Still, can't wait.

[@ThatGuyMagnum]

Realization But by then we will have 100TB SSD and stuff, so let's hope both technologies develop at the same speed. :D

[@KillaGrogan]

***** Exactly. Low resolution=higher frame rate to an extent. With the way technology works we will have 500k fps HD in the future. Maybe a very long time away though :(

[@USMColdCorps1]

Back in college I took a night job reconditioning aircraft passenger cabin windows, which are some form of acrylic resin. You couldn't smack one from inside the cabin hard enough to shatter one, but once removed, if you just tapped it on an edge it would shatter.

[@TheSeaofScience]

For the record, 1.03 mps is 3708 mph.

[@TheEchelon]

uhm no its not

[@Th3CoLoSSuS]

The Echelon Except it is.

[@TheFunnykid33]

The Echelon BlueLucario7 The Echelon 3600 seconds in an hour 1.03 meters per second x 3600 = 3708 meters per hour or 3.7 kilometers per hour (kinda slow really) where i think there is some confusion is in the "mph" which is an abbreviation used to express "miles per hour" but i think blue meant 'meters per hour'

[@TheSeaofScience]

The Echelon It is 2.304 miles per hour.

[@TheEchelon]

Alex Schmidtka You don't have to mention me twice bud. But yes I was wrong, I misread. I thought of the conversion of meter per second to kilometer per hour which is different. I stand corrected.

[@TheDarkllama2]

This is probably the least scientifically backed question but what would happen if you tried this in something extremely cold such as liquid nitrogen?

[@Cosmalano]

... Tried what? Solidifying it?

[@TheDarkllama2]

Yeah, like would cooling it even faster have any effect?

[@Cosmalano]

Heat flows from warm to cold, so the glass would still lose it's heat, just faster. Maybe the glass would crack. The university of Nottingham has video on KZbin of them dropping ice cubes in liquid nitrogen. It might be similar.

[@lite6384]

liquid nitro wont have the packed tension cause its a liquid so it wont explode i think i dont know i am just guessing

[@Abs0lutelyBella]

Powerprick red He means....what would happen if you cooled the GLASS in liquid nitrogen.

[@MattMathis1]

Awesome stunt!

[@ChristopherMorrow]

This guy had a boat load of awesome videos.

[@TheGrueSlayer]

It's the water that causes the reaction. Water cannot go higher than 212. When the molten glass drops into the water, the heat of the glass cannot be absorbed by the water (can't go over 212)... the heat is forced out the tail... this creates a "phase shift" of heat energy to pressure and sound to get the "heat energy" out as quickly as possible. The point in the tail... is the phase shifting point. When the glass cools that point is sealed. There is a lack of pressure through the "sound harmonics" of energy. Glass is special in that it will reflect anything not on the other side. The Rupert's Drop having phase shifted the heat to pressure and sound, has drastically less than on the outside. The "magic glass" reflects the pressure through the sound harmonic. If you strike the Rupert's Drop hard enough to make a spark (a phase shift of pressure to light to expend excess kinetic energy)... it will pop the rupert's drop. If you "unseal" the Phase Shifting point, it will shatter. Now, if I could just make one... but that's what happens. Magic Energy Reflecting Glass... dropped in Magic Temperature Restrictive Water causes a phase shift of heat to sound and pressure. Something like that is likely how the Mayans made the stones for their walls, as well. Evolution is impossible... by the way. :)

[@Rucka_Inc.]

"We here at 'SmarterEveryDay' don't wear hand protection when glass explodes in your hand. Remember, we are the ones who tell you what makes you smarter."

[@sebastianfletcher-taylor1024]

So far I have a positive take on what I've seen on this channel, but I agree that PPE would be advisable. I was actually more concerned about respiratory protection, though.

[@lorez201]

Try this with liquid nitrogen instead of cold water sometime.

[@roylopez235]

Thanks for all your videos!

[@cheath8705]

1 mps? I could get from Sacramento to Portland in 10 minutes...if only.

[@mumblecake251]

Question: A Prince Rupert drop is formed by pouring molten glass into water. The basic physics of a difference in expansion due to a temperature gradient being present is nicely explained here. Would you achieve a stronger Prince Rupert drop if you would increase that temperature gradient aka pour the molten glass into liquid nitrogen?

[@1313CHORIZOMAN]

what if you used a press. would it break then.

[@andsoon87]

Really nice video. Even if you're watching it again and again it's still interesting.

[@user-er7mv7kr3u]

긱블보고 왔다 손!

[@오블-d3e]

🐂온

[@Shadow0fd3ath24]

Crazy thing is....1.03 miles per second is VERY close to the max speed rifle powder can burn at sea level which is ~5320fps and usually the max possible speed with conventional powder out of a bore is 5280fps and a lot of that was RIGHT there

[@MichaelHenderson59]

Next, build one 1 mile long ;)

[@johnny5139]

Can you make a Prince Rupert's Sphere in Zero-G? Would take a plane with simulated zero-G obviously, ISS cant risk a glass furnace.

[@Lowraith]

Oh, nice you beat me to it.

[@MrDumonic]

So much energy released. I slowed the video down to 25% and wow!!!

[@유니-b1q]

긱블 보고 온 한국인에게 묻는다 저거 유리 터지면 파편 안 뾰족함...? 사람 몸에 닿아도 되나

[@simpox94]

what if you drop a molten ball of glass in the water instead of a molten drop? wuld'nt that make it a super durable ball without any flaws?

[@YukiiroNite]

I just watched this video and was wondering the same thing. Problem is, gravity pulls the glass into that shape. Maybe we could do something like that in space, or some other zero gravity environment?

[@simpox94]

YukiiroNite hey that's pretty clever, but how do you cool of a molten ball of glass fast and evenly in space? I mean, water would be out of the question right?

[@PoorAttentionSpan]

Who wouldn't want super durable balls?

[@AnthonyColetti]

Marbles?

[@JagerWarrior247]

simpox94 I know I'm 4 months late with this answer, but how about using space itself? It is the coldest place in existence after all.

[@theprodigalson4003]

Thanks for all the lovely content you make for all of us