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?
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.
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 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.
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!
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?
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.
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!
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
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.
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
+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.
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 :-)
+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.
+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 :)
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.
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.
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.
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
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.
@@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?
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.
+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?
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...
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 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.
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.
+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).
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
+Blobs ! Agreed. UA-cam 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.
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.
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.
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.
@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.
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)
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 Yeah and they continue to use smartphones and things like UA-cam 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.
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..."
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!
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.
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.
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.
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?
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
+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.
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..
+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.
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?
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.
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!
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.)
+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"
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 UA-cam 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.
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
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.
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.
What we take for granted here is the effort and care put on an educational video for us curious people. All power to you!
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
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.
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
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.
6:05 i wonder where prince rupert lives now
Seven year old video
Grave
obviously he is King Rupert by now.....
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
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
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 :)
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.
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?
5:13 Mr.Stark, I don’t feel so good
Lol
Stolen
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 :)
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.
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.
3:26 perfect explanation! Loved it!
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
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.
This is still one of my favorite science videos in 2019.
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
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.
Beautiful. Science is beautiful. Love your passion for it.
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.
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?
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
I found about this channel just today, but the cat convinced me. I have subscribed.
May it be characterized as a frozen explosion? All of the internal tension waiting to be released due to the rapid cooling?
Omg I love that animation just him crouching made me start dying in laughter
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!
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 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.
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
I hate how entertaining these videos are.
Why?
Skeletor Jopko because of how much time you waste on them
Being a glazier, I have to ask, "No gloves? Really?". Glass splinters are the worst!
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 🎉
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.
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 :)
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.
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
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.
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. UA-cam 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.
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 happy to see that your production quality has improved over the years, 2021.
You would make an amazing science teacher! You make it easy to understand and a lot of fun. Keep em coming!
We should make a mile-long Prince Rupert's drop to see it explode in less than a second.
4:00 this animation is everything
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.
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
This is fascinating. Thank you for posting this. I really do feel smarter now.
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
So you’re telling me that glass is breaking faster than 3,600 mph
After all the explanations he did for the Rupert Drop. What I got was "hmmm, it's hard"
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
@@56independent not if ur behind unbreakable *_Glass_*
Does a 30m long one serve too?
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
can we make a Rupert's drop without a tail, a complete sphere which is near indestructible
I'm guessing the Death Star was built the same way.
This is fascinating! Thanks for the video, I had no idea that such a thing existed, but it's amazing to watch!
~Trav
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 UA-cam 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! :)
One of the best explanations so far, well done!
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..."
LOVE your videos, learned about the PR drop, NEVER stop learning! But, please, use airway protection too. Those shards are easy to inhale.
"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...
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!
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.
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.
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.
That video was fantastic. That was so interesting. Keep up the great work.
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 want to see a price Rupert drop shatter under water in slow mo
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.)
That human demonstration was a trip 😂
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
This is cool! How is it not cutting you guys up?
+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.
Interesting!
+MachWarfareGames And gets embedded into skin crevices, clothing etc.
Sara Llewellyn ouch...
+MachWarfareGames i saw another video about prince ruperts drops and apparently it stings a little when it explodes in your hand
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
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?
Never heard or even seen this before. Every day is a school day. Go Prince Rupert!
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.
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.
Thanks for all your videos!
6:25, the tension’s killing me, lol
it's 2019 and there are STILL little hidden shards of glass all over his face
Do prince Albert next bro! hahahahahahaha
There's a reason this is one of my favorite channels on UA-cam
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
Can you make one 60 miles long and see how long it'd break? That would be sick
KingMCIV u can work it out you know how fast it breaks
mrclancymac1 but it looks cooler when you see it happening rather than using math and calculations to estimate how long
KingMCIV maybe we need some giant satellite of furnace, then we drop it to the sea.. that's sound promising long as 60miles
It would be sicker to see one 70 miles long
Adam Looze Don't go overboard lad, we have to stay realistic
Science + humor =fun learning! This was awesome 👏🏼
Absolutely love your channel
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.
Would love to see nail clipping at extreme fps! (Depending on the cleanliness of the nail)
Your videos are always so informative and interesting!