Mystery of Prince Rupert's Drop at 130,000 fps - Smarter Every Day 86
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- Опубликовано: 15 сен 2024
- "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.
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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 @SmarterRUclips
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!
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?
Yes. By the way: The ISS orbits the Earth at almost 7 times the speed of failure front :D
The logistics of making a mile-long Rupert's drop would be hilarious.
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.
how are you gonna do that
the "shockwave" would go through the drop at sound speed
Said a million times but THIS is EXACTLY what RUclips was made for. Thank you so much Destin, so so much. You're a legend.
Hey, is that Mark Anthony?
Yes
Prince Rupert, I don't feel so good...
That was clever.
😭
DARK APPERITION oh god puns
lol
please explain 🤔
I love how you're casually holding exploding glass without gloves.
Or lung protection
Rs😂😂💯
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.
@@sgtjohnson49 is that not better than glass in your eyes?
@@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.
can we appreciate how he filmed himself using 3 different colored shirts just for us to get smarter.... youre the best man
He did that so we could get smarter...every day.
I absolutely loved the explanation with all the mini you's
The best xD
Facts
3:26
Haha that was a perfect explanation!
Honestly made it so much easier to hmderstand
3:22 OOOHHHH so this is why some glass looks rainbowish when you wear polarized sunglasses. I've always wondered
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!
Nice observation indeed
My tints in my car do this
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.
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?
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.
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
Calvin Pham I feel like you're on some sort of list for this comment
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.
kendo512 I'm probably on a lot of lists for a lot of reasons :)
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.
I'm interested in the two questions asked earlier: 1) What WOULD happen if it were to be cooled in liquid nitrogen? And 2) As the molten glass dripped, could it perhaps be quickly clipped off in order to create more of a round shape than a drop?
Good questions especially the second one
I think it wouldn't differ much because the difference in temperature between molten glass (1400-1600°C) and water (20°C) and between molten glass and liquid nitrogen (-200°C) isn't that great.
yea water's specific heat is 4.186 joule/gram °C and liquid nitrogen's S.H. is 2.04 j/g C so it would "hold" less heat per unit mass before increasing in temperature. so it would not do as well cooling the whole glass drop as water would. I suspect that the surface would cool faster(only because it can achieve a lower temperature than water while staying a liquid) but then the heated nitrogen would turn to gas and form barrier between the bulb and the rest of the liquid and ultimately make the cooling process slower.
+Wesley Smith Perhaps if the Leidenfrost effect could be negated, the cooling would occur far more rapidly. I wonder if the water were to be put under enormous pressure, the liquid would be forced into direct contact with the glass?
Great questions. What is actually happening here is you are creating tempered glass. The only thing required to make the glass tempered is the rapid cooling of it which hardens the outside first, so it should be the exact same regardless of if you do it in liquid nitrogen, water, or oil (like they use for metals). I think the only difference is 'how' tempered it is. The colder ones may make them explode faster where the slower cooling ones may only make it shatter, but not explode.
Now if you made it more round, it'd be the exact same thing and have the exact same properties just without a tail. Both are tempered glass, just they have different shapes. The TV show Hacking the System had a really interesting demonstration of this. They had the side windows of a car (made from tempered glass) and tried to smash them with a hammer to no avail. Then he took a tiny ceramic bit from the spark plug and tossed it at the glass and it shattered into a million pieces.
What we take for granted here is the effort and care put on an educational video for us curious people. All power to you!
How did i get here from watching someone drop a red hot ball of nickel on ice?
Omfg, dont tell me from 9gag as well. I was watching RHNB before this too.
lol
Same here
EpsilonBTS I'm not sure but I want to see the nickel on ice. Link? LOL
EpsilonBTS linkage
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.
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!
@@curtaustin8119 that was a great and clear explanation, thank you!!!
I'm surprised government didn't weaponize it
@@nottoday3878 This kind of thing seems very hard to weaponize
would a prince Rupert's drop in space not having a tail be indestructible?
But the tail is from it dropping into the water, not the air. But in space there is no gravity so you will put it into water not drop it. therefor no tail but it "only" works in 0g.
so would you have to inject the glass into the water somehow? IT needs the insta-cool of the speed of gravity pulling into the water doesnt it?
How do you inject glass? Theres gotta be a way? Wouldnt there be a tail there too though?
Arg science
Ben Masta a
In a 0g environment, the molten glass can be suspended then the water can be moved to the glass rather than the glass to the water.
The ball end is NOT indestructable. It's just hard to break it without breaking the tail first
6:05 i wonder where prince rupert lives now
Seven year old video
Grave
obviously he is King Rupert by now.....
0:45 "Kind of looks like a tadpole" Yup. A tadpole. That's what I was thinking too...
you just ruined the joke...
Sean Kratovil-Lavelle hahahaha
there's always that one guy who has to try and ruin the joke lol
SPEEERRRMM
spermm
Hydraulic Press vs Rupert drop
it's been done already. search for it
OfelieArt
look it up, theres already a video of it on youtube. it's amazing. spoiler alert:
it dents the press :O
20 tons of pressure
yes
OfelieArt
It will break. There's a vid of it somewhere
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
Been done, the drop doesn't break
that was a lead base. :/
I'm pretty sure it would break, and you'd need far less than 100 tons.
it is done already ;) i found it on two channels at least :)
search prince rupert's drop here on youtube. You will find the video that he did this. And the exploded in 20ton press.
Omg I love that animation just him crouching made me start dying in laughter
Humanity should try to make a Prince Rupert Drop that is 3 kilometers long, and just shatter it just for the LOLz.
donbasuradenuevo it would take 2 seconds to go from one end to the other,
i would enjoy watching it in slow motion... @diego
Diego Sanchez it would actually take 502.7 microseconds (if you don't factor in deceleration) that's 0.0005s
Deceleration because of the energy released in the tail?
Very cool! As a fellow Southerner, I have to say that one thing I like about this video is that it illustrates the fact that a Southern accent is not synonymous with ignorance. Great job with explaining the science with good visualizations and some comic relief too :-)
I want to see Prince Rupert's Drop made in no gravity enviroment, without a tail...
+Jacek J that's actually very smart!!
+Jacek J If you want a perfectly spherical one you can do that on earth, just need to drop it from a very high height, that's how lead shot or ball bearings are made, liquid falling turns into a sphere (rather than what is thought as a "rain drop" shape)
+skittyzed any idea what sort of height you'd be dealing with? The molten glass seems pretty viscous, it may take a while to round itself out.
Too high and you'd have to worry about it cooling on the way down.
Experiment design:
1) get a tube made of a very heat resistant material (open at both ends),
2) at the bottom have a compressed gas torch or torch + air jet that will be enough to keep a drop of glass suspended and molten in the tube.
3) drop some glass in the top and let it "fall" long enough to round out.
4) quickly remove torch/air and let it fall out the bottom of the tube into a water bath.
+Jacek J First thing I thought of when I saw a prince ruperts drop for the first time.. I'd love to see this as well.
+mike noden - What you seem to be discussing involves magnetism. Put a high powere magnet through a tube of copper and it slows down. this technically can be done to a point where the magnet will almost if not fully suspend = balanced rounding out - unsure ref the magnet being inside as magnets dont like heat it disrupts them but i'm sure there is a way of combining both ideas and your experiment working :)
4:32 before Microscopes, people thought sperm looked like this, men in tiny capsules that made people
yes their called hymen heads
Wait, that’s not how it works?!
@@sergetys no, it is. I was just lying...
@@snailsaredumb9412 oh, thank god. Phew! Was a close one.
I got very spermy vibes from this part in particular
Prince Rupert's Drop!
Great ... excellent ... brilliant.
Thanks for your videos ... i love them.
I'm physics teacher in Portugal and use them in my classes.
Keep it up.
Hey, my name is Evan, and i was watching this video and started thinking,,,what would happen if you tried to reliquify the tail end. or the head of one of those drops. would it explode? or just melt?
Thanks for all the awesome videos, and the true love for science. I hope to hear back from you soon!
-Evan
So if you manage to drop a semi spherical gob of molten glass in the water... it wouldn't have a tail to break from right? you could make ball bearings and really hard ornaments...
loved the video! can you make a video of how a spider climbs its string? because the other day I found a spider hanging from its own thread that he wrapped around a pole, and if you look real close, it looked like his legs were not touching the string! his insides were pulling the string and letting go of it to lower.
What happens if you make one that's way bigger?
The exact same thing. Only that the breaking point/exploding point is far more away from the tip of the Drop.
RedHawk Gamer
Bigger explosion and more fun
Duxx Skuxx bigger explosion and possibly death😂
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
then u have a bigger prince ruperts drop.
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.
I finally came back to watch this video when I heard you call your cat Prince Rupert in a video. Love both this phenomenon and the cat, but I *especially* love the oldschool Bill Nye vibes the little color-coded tensile-strength Destins were giving off. I always appreciate a good visual aid, haha.
We should make a mile-long Prince Rupert's drop to see it explode in less than a second.
so when that exploded, shouldn't he have had gloves on? It seems like there would be little shards flying into everything exposed.
All the shards are basically the size of dust particles.
+TheGreenPanda I have a share of glass in my foot right now. IDGAF how small the pieces allegedly are, I bet you wouldn't walk around barefoot on that patio.
no he shouldnt.
+MilkiKiki i probably would
Do you even know how to swim?
Beautiful. Science is beautiful. Love your passion for it.
This is still one of my favorite science videos in 2019.
I am apparently late to the party, but glad I made it! this is awesome!
I love this channel.
Yeah Destin has some really good videos.
Most are great for kids too. My daughter loves them.
So if I make a mile long rupert's drop, it'd only take about a second to explode?
yup
+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
+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).
+Poo Face Also temperature and pressure.
Of course we're talking approximates here :)
so if i made a mile-long prince rupert's drop, it would break in 1 second?
yes
+Metal Marauder uhm, why are you questioning this? it has literally been asked 4 months prior to you. is it just for comedic value? or for the comments?
***** i was just curious. sorry i didn't check all the comments first
The thing is, the Exaxt same question was asked and i think its in the top 10 comments. Thats why i was wondering. Fun fact, that comment was literally right above yours. For me at least...
***** well i didn't look
Sometimes, you never know what you want to learn until you learn it. This was incredibly interesting. Thank you. Learn everything you can fellow people!
I want to see a price Rupert drop shatter under water in slow mo
May it be characterized as a frozen explosion? All of the internal tension waiting to be released due to the rapid cooling?
Its crazy to think thatDestin's videos that were made in 2013 has better quality than most of todays videos.
He makes great stuff and he’s been ahead of the game in doing so
Nerds ftw 🎉
5:13 Mr.Stark, I don’t feel so good
Lol
Stolen
I hate how entertaining these videos are.
Why?
Skeletor Jopko because of how much time you waste on them
3:26 perfect explanation! Loved it!
neat trick with all the little mini yous going on there. but i bet buying all those red blue and grey shirts cost alot.
uhhhhh he only bought 1 pair of each color lol
that was a joke you dummie
Bet it cost even more to clone himself that many times
Not to think of all the food consumption. Man, I don't think this is very sustainable.
May be he purchased only one tshirt and editing does all that
Many years ago I was employed as a scientific glass blower this is where I first
encounter these. I made many of them smaller ones seemed even more indestructible.
As one may expect the quality of the drop varies with the glass type used. Low
expatiation glass like Pyrex is poor while a much higher expansion lead glass yields
good results like those seen in the video.
Being a glazier, I have to ask, "No gloves? Really?". Glass splinters are the worst!
"Goggle up. Science is about to happen" . Ha! love it!
when I was a kid doing a "science experiment" I used to say "Goggles on!" and now it's a joke in my family...
i like how this is a science channel but it uses miles per seconds
It's a channel which strives to teach and encourage interest in science to the general public, meaning that the use of units which are familiar to the general public is the obvious best choice.
You need to take some sort of technical writing class (which as far as I know every STEM student has to take) or something similar if you don't understand that you need to adjust your communication in order to be comprehensible to your target audience.
Matt McConaha The general American public. #justsaying Your point is valid but the USA really should have switched over long ago. I've heard middle-aged Americans say there was an attempt to teach them when they were kids but it fizzled..probably for some dumb political reason.
megabigblur Well Americans make up a large portion of his viewership, so it makes sense to give the units that Americans use. And he also showed SI units, so I don't know why anyone is complaining.
I agree that it would be nice if the US switched units, but I also understand that it is logistically difficult to do so.
megabigblur we tried, but the only measurement that stuck was liters.
+maxime therrien If we switched over now imagine how many signs, rulers, and other measurement objects we'd have to completely remake or change.
I'm not interested in the glass breaking, I'm interested how they don't get their hands pierced by the glass.
Probably because the shards are too small maybe
@@Shampoid Wouldn't tiny pieces be worse though? Like they could enter cavities like nostrils and ears... can someone answer whether or not it would actually be pretty hazardous without protection?
@@veggielovers7502 maybe if its as small as most sand particles it wouldnt be dangerous
@@Shampoid But how? You don't have to answer but tiny pieces of glass could easily rupture blood vessels, cause internal bleeding, etc., i imagine
Veggie Lovers I think the glass shards are still too heavy to breathe in.
That’d explain why this guy didn’t use protection at least, considering he’s meant to be a professional.
Too small to pierce skin, but too heavy to float in the air.
What manner of sorcery is this
1k magina
Tis' not magic, but purity of will.
1b+
Physics granpa. It's physics.
I deliver thee unto death
I found about this channel just today, but the cat convinced me. I have subscribed.
Now I wanna see a 100ft tall version and then cut the tail
Key dox that would be hard to clean up
StickMation! It would be hard to make in the first place
Thats called a bomb
@@56independent42 not if ur behind unbreakable *_Glass_*
Does a 30m long one serve too?
Never heard or even seen this before. Every day is a school day. Go Prince Rupert!
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!
Stupid people doesn't like to be reminded that they are stupid. :p
Ctuchik Yeah and they continue to use smartphones and things like RUclips though, which we wouldn't have without science & the innovation it brings lol.
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.
andefghi Yay, way to turn a joke into an actual prof of point! :D
Ctuchik don't! Oh, the irony! :)
Hey just wanted to say...
You need your own TV show. Like for real, I'm not joking one bit. It'd be on my list of favorite TV shows
Do it and you're cool
youtube is the new tv
he's earning through youtube anyway
+Blobs ! Agreed. RUclips is a much better platform for this. Everyone can watch on their own schedule, share, pause, clic links and annotations, and he can make videos on a more relaxed schedule too.
I do see the praise in wanting a TV Show of this, and that's cool, it's just I feel like he doesn't even Need that anymore.
Cheers! Keep getting Smarter Every day Guys!
Bad idea, he'd then be under the thumb of some network & loose his control of schedule, ideas, content, creativity, everything. In short, it wouldn't be the SED that we know & love.
Why are the glass fragments don't harm your fingers or skin while exploding? Aren't they sharp as hell?
As Jackson said, this sort of 'break' sort-of just disintegrates the entire thing.
So you’re telling me that glass is breaking faster than 3,600 mph
You would make an amazing science teacher! You make it easy to understand and a lot of fun. Keep em coming!
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.
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..."
Thank you for this demonstration. This actually led me to look up arch bridges and how they work, which are a marvel of early engineering and should be required reading in any introduction to engineering or physics course.
Question: Is it possible to MELT off the tail of the Rupert's drop, without causing the shattering effect? Or would it still shatter?
If you could have just the heads of the Rupert drops, wouldn't that have great ballistic properties, or is this manufacturing process already being applied to cellphone screens, just in a different manner?
Someone posted a short where they melted the tail off a Prince Rupert's drop. It didn't explode, surprisingly, but the resultant blob of glass is still ridiculously strong and probably indestructible
I wanna play with molten glass now... -_-
The inside is molten but as soon as it touches the air it cools instantly
SoliderCraft203 No, that is definitely not the case. A state of molten glass would require heat, which would be immediately transfered through atmosphere. It is completely cool.
After all the explanations he did for the Rupert Drop. What I got was "hmmm, it's hard"
4:00 this animation is everything
"Can you show me how to make a Prince Rupert's Drop?"
"no"
Wow... so the fracturing speed of Prince Rupert's Drop is Mach 4.83 ... Nuts.
Imagine a jet flying that speed.
There are jets that go mach 7+
@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.
@@oofiousnien-thousand5923 yeah but that was more of a rocket
This is fascinating! Thanks for the video, I had no idea that such a thing existed, but it's amazing to watch!
~Trav
My question is, if you aged the Prince Rupert's drop, say, five years, would the energy dissipate, and the glass smash at point of impact?
michaelmarage415 Probably.
michaelmarage415 No. The only way for the energy to get released is for the glass molecules to move, and the molecules of solids don't move relative to each other. They expand and contract a bit when they heat or cool, that's it.
dlwatib Glass is not really "solid".
Ever seen 50-year-old windows? They are way thicker on the bottom than on the top.
naphackDT That's just a myth. Old windows are thicker at the bottom because of inefficiencies in glass manufacturing.
naphackDT If you got that much thickness change in a mere fifty years, then the glass artefacts found in Egyptian tombs from 2000 years ago should have been puddles on the floor. Further, fiber-optic communications lines which have tolerances measured in microns would not last any significant amount of time.
50 years ago panes of glass were commonly made by pouring glass into a mold. In order for the air to escape the mold as the glass was poured, they were thicker at one end than at the other. Glaziers generally installed the panes with the thick edge down, however you will occasionally find panes that were installed "upside down" and are thicker at the top. Today we pour the molten glass onto a bed of molten tin to get the super-flat panes we use for our windows.
It's "old", but one of the best videos you've ever made. When the drop explodes I think of the Big Bang.
This is fascinating. Thank you for posting this. I really do feel smarter now.
Science? In Alabama? You'll get chased out of the state for witchcraft.
+dunebasher1971 rofl
Well I guess you've never been to Huntsville, Rocket City :)
+dunebasher1971 Well according to the book Destin referenced at the very end of the video, Exodus 22:18 would justify that and more.
+dunebasher1971 then I suppose 793 people who watched this was from Alabama
+Mahendra Krisnamurti im from Fairhope, Alabama
I wonder what would happen if you shot the teardrop end with a gun? Would it still break from the tail end, with the tail cracking due to shock like it did when you hit it really hard with the hammer, or would the speed of the bullet be enough to overcome that, and actually break the drop end first?
Someone tried it and the bullet shattered on impact while the drop was slightly scratched
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
If the tail of the drop were melted off, would the drop then be indestructible?
rskrny nop, it would shrink and release the tension procedurally, when melted it Will basically go back to the drop turning it in an common glass dropllet ,Sorry for the grammar, non native
Nope. Then it wouldn't be called the Prince Rupert's drop anymore.
shortening the tail at least would make it less vulnerable (unless you are intentionally attacking the tail then it would just be vulnerable.)
This combination of principles and properties being explored and viewed at such high fps is like in itself art or animation that is so beyond awesome.. I really like the way you explain what is happening and why, step by step.
I'm guessing the Death Star was built the same way.
3:25 that glass looks like homer simpson on so much Acid
acid thought lol
Underrated
Looks like you're on acid
The goggles they do nothing. Sorry, 1st thing I thought of when I read Simpson and Acid.
I would have liked to seen the tail supported in ballistic gel with only the "head" exposed for a hammer impact.
hoppermantis interesting prospect
Hello random guy from six years ago
now what would happen, if you roll motlen glass into a ball before dropping it into the water?
hypothesis: an almost indestructable marble
Cuda FX I believe it's called "tempered glass". It's used for quite a few things.
Cuda FX Its not that you cant break the drop its just that the tail is so delicate it will always break first
Science + humor =fun learning! This was awesome 👏🏼
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.
LOVE your videos, learned about the PR drop, NEVER stop learning! But, please, use airway protection too. Those shards are easy to inhale.
At nearly mach 5, there has to be a small scale sonic boom with each one broken. Cool stuff!
For the record, 1.03 mps is 3708 mph.
uhm no its not
The Echelon Except it is.
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'
The Echelon It is 2.304 miles per hour.
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.
These videos never get old. I've shown everyone. Never gets old!
This explains the sudden explosion of bathroom glass door, when I stayed at one of the hotel. Only a mild external tension applied at the edge of door led to sudden explosion of door with similar minute glass particles.
I am also a huge fan of the song in this video! I'm going to download it now!
Is 1.03 miles/second the speed of sound in glass?
+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.
+DeathMarch That's speed of sound in the air at normal conditions. Sound travels much, MUCH faster in solids.
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.
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..
speed of sound in iron
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!
6:25, the tension’s killing me, lol
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)
Gregory Parrott you’re 4 years late bud. But.. umm... kudos for catching a mistake... I guess
Is it possible to make a near perfect sphere-esque drop? If so that would be like a tear drop without the obvious weakness?
***** that's why i was wondering if it was possible lol, like if somehow it was spun and cooled from allsides immediately by water or if when it was about to drop that its tail was cut to mimic the other side before falling and then cooled all around
+Moose Frenzy If you could get the molten ball of glass to drop without drooping at all, it could work, or if you hade some means of suspending it in air and quickly blasting it with cold water from all sides....
So it's theoretically possible, but not really practical.
Anime Summit i'd like to see someone try it tbh, it would be really interesting
+me1970 I'm not even sure that is necessary. If you put it in a conducting canister of some sort and it could be suspended in a coil of copper pipe with some AC running through it, and once levitating, spun. this would heat it evenly.
When heated sufficiently, switch of the AC current, plops into water.
you really give everything.. this acting as red grey and blue glass molecules was hilarious
it's 2019 and there are STILL little hidden shards of glass all over his face
THAT WAS TOTALLY WICKED!!
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.)
😂 yes
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?
+Eden Feathergreen dunno
+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
+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.
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"
+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.
There's a reason this is one of my favorite channels on RUclips
Now we know what inspired the creation of the Ford Pinto
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!
Good observation. But putting a molten globe into floating water might be a challenge
@@Tempusverum You would need to squirt the water at the globe or blow them together somehow.
who is prince rupert?
He's the nephew of King Charles I and is said to be the first one that brought the glass oddities to England in 1660.
A scientist, a cousin of King Charles II and a great general on the losing side in the English Civil War. There's a town named after him in B.C. Canada.
A prince named Rupert
he had a poodle theres a picture of it
He invented this
That human demonstration was a trip 😂