can you think of a way to dampen the Shockwave so that the prince Rupert's drop would not shatter from the tail. That would be an interesting experiment to try.
I would be interested to see if a liquid might work better than a solid. You're looking for something to most readily accept the energy from the shockwave. Mineral oil? Water? mercury? Is higher density better or worse? How much of the end should be submerged? I wonder what the math would look like.
Thank you to everyone who has: A. Resubscribed and hit the bell. bit.ly/Subscribe2SED B. Contributed captions in your native tongue. ua-cam.com/users/timedtext_cs_panel?c=UC6107grRI4m0o2-emgoDnAA&tab=2
I'd like to see a harder bullet used, perhaps steel shot or maybe even a spark plug? would the glass still destroy the bullet? I'd try it myself; I actually have a box of steel shot for my rifle, plenty of spark plugs, and I could certainly make a Rupert's drop, but that camera...
The problem wouldn't really be with the bullet, the thing is that when the bullet hits and subsequently shatters, it transfers a bunch of its kinetic energy into the glass, that energy then forms a shockwave that shakes the tail to pieces, and THAT is what finally causes the drop to explode. If you used a harder bullet or a larger caliber the same thing would still happen. Possibly a harder bullet might glance off it I guess, and it could survive better since less deformation would mean less transferred energy. Then again, I am sort of curious if even a .50 cal could rip it apart from the bulb end...
I wonder if tying the string to the tail was causing most of them to break? You can see the shockwave trailing down the drop and the tail begins shattering at the tip before the shock wave reaches the tip. But just before the shockwave the drop flexs and bends. If the tail is touching anything while it begins to flex, then the fragile tip snaps and starts the chain reaction. If the tail was free hanging, the flexing might not be a problem? Very curious.
It has to do with the internal stresses in the glass created by cooling it so quickly. Unless glass is annealed, or cooled slowly at specific temperatures for specific periods, it retains stress. If you even lightly tap stressed glass at the correct point, it will shatter. This glass is weakest at the thin spots, thus, the tail. When the tail is disrupted, the piece shatters instantly. Glass is amazing.
I was thinking that dipping the tails in wax would give them a bit of reinforcement without risk of shattering it on accident. I considered using tape, but that would probably be tough to do without breaking it.
They implement that policy because you lose sensitivity with the gloves, and is easier to damage the volume. But policy may be different from place to place (you may want to check the "objectivity" channel to see more about the royal society collection)
Check out the channel Objectivity which takes place at the Royal Society where Keith is one of the regulars. They never handle brittle paper with gloves because they decrease your sensitivity and thus increasing the risk of tearing the paper.
This is the perfect demonstration of physics. Internal stresses as opposed to external forces. Beautiful cinematography Destin! You should test one of those window breaking devices that you put on a car keychain incase your car floods, and see if it hurts the Drop at all
Just another UA-cam commenter they both use a V2511... that's pretty expensive so Destin literally had to ship his camera to them until they got their own
Glass is an amazing material. As part of a project to design a Capillary Electrophoresis (CE) DNA sequencer, I was introduced to fused-silica capillary tubing which is made from the purest form of glass. The capillary tubes we used were 50 microns ID by 360 microns OD, and coated with polyimide polymer for protection from hydrogen embrittlement. A human hair usually could not fit into the inside of this tubing. This tubing could be tied in a simple loop-knot and drawn so tight that the loop diameter could be less than 6mm; if you let go of one end, the knot would quickly untie and recover to a straight shape without any kink or curve! I've never seen any metallic wire or microtube do this. The fused silica seems to be the perfect spring material. Also interesting is the very high dielectric strength of this fused silica, about 4 kV/mm. Since we used 15 kV for electrophoresis, the tubing could allow a short-circuit through the glass wall when its OD (outside surface) physically contacted a conductive (metallic) electric ground. The short-circuit would punch a nearly perfect, tiny cylindrical hole straight through the tubing wall without breaking the tube! Note that the electrical potential was produced with a charged ion-rich DNA separating aqueous solution that filled the tubing, so the short-circuit was from fluid inside to metal on the outside. Early electrophoretic experiments failed because it was very difficult to find the tiny electrical breaches in the glass wall, some only a few microns in diameter. Only Scanning Electron Microscopic (SEM) images revealed the holes which appeared perfectly round and smooth. Of course, I learned to fully isolate the tubing from conductors, except at the ends. Glass is one of the most exotic materials among many I ever used in engineering.
+Aron I was involved in that project 24 years ago. The instrument we invented & designed turned out to be the quintessential, seminal technology for forensic (quick) analysis of DNA, and it became the worldwide standard from which many more sophisticated, multi-channel DNA analysis instruments were developed since. The original is still being sold & used. The panoply of its novel technologies encompassed breakthroughs in microfluidics, electrophoresis, electrokinetic injection, Laser-Induced Fluorescence (LIF), polymer chemistry, spectrographic optics, peltier-cooled CCD detection and algorithm development; so, even an old unit could be a playground for Destin! It goes by the moniker 'ABI Prism 310 Genetic Analyzer'. I'm retired now, so I no longer have a lab.
MOTHER OF GOD i want a demolition ranch slomo guys and smarter everyday collab NOW! barrett 50 cal vs prince ruperts drop at 1.000.000 fps just imagine the awesomeness for a second there
This is one of the most incredible things I've ever seen! Thank you for all your hard work that you put into making fascinating and educational videos!
youtube commenter #6872149 : UA-cam has lowered the subscription count on some channels, claiming that the subscriptions were from bots and such. If YT has since improved their detection system, they may trust newer subscriptions over older ones.
First, you mutate a sperm cell to a supermassive size as seen by using energy bursts from a nuclear reactor. You then freeze it with liquid nitrogen. You have to be careful, however, as once they take on such a size, they can be quite violent. For this reason, it's best to have a containment device of some sort. But once you freeze them, they are no longer a hazard.
I think a better question would be, what if you made one in space? Would the zero gravity allow a sphere to be made and thus be indestructible, due to not having a fragile tail?
Something I really love about your youtube channel is the fact that I'm actually getting smarter for every video i see! You have awesome content and videos, keep up the good work!
A couple questions. Would a sphere rather than a drop quenched in cold water have as much strength without the vulnerable tail? And Would the temperature of the quenching fluid effect the final strength? I suggest quenching in , hot tap water, cold tap water, near freezing water, and liquid nitrogen ; then destructive test in hydraulic press with pressure guage and high speed camera to compare.
Were it a sphere, it would simply be a glass ball. While I'm not familiar with the specifics of the drops, I do know that the tail is required. I think of it that, in order to maintain an equilibrium of strength, the drop requires an extremely weak point (the tail) in order to make up for the extremely strong drop itself.
Destin, This is one of my favourite channels, I even make a point of watching the whole of the adverts before your vids. Keep up the good work. I'm impressed by the people who help you with translations. Big thumbs up to all them too. You are all doing a great job. Looking forward to more brill content.
Haha, I thought you were gonna have goku punch it as hard as he can... Lol. That should be in an episode of dbs. Chichi asks goku to punch the droplet and goku dislocates his knuckle.
wow, I find it super interesting that the head survived and was bullet proof, but the impact vibrates and breaks the weak tail, which in turn releases tension and explodes the head. the head technically survived the bullet impact.
Destin has his own .50 bmg So, why not shoot Destin's .50 and Matt's 3 .50's at the same time, cause what is better than one .50 bmg, that's right four😂😂
So this episode had me thinking about the creation of the Prince Rupert's Drop. It's created by dropping molten glass into water but what happens if you drop it into something colder? Will the faster creation make it more or less strong? Lets say we dropped it into liquid nitrogen. Would it cool so fast from outside in that the inside cooling would cause even more internal pressure than normal? Also, using this method, could you pour molten glass into a iron sphere mold and drop the mold into the liquid nitrogen preventing the creation of the tail so there is no weak point, making a practically indestructible sphere of glass? I'm sure there are many things I am not thinking of as I don't fully understand the physics of the drops creation and all of the forces involved but I figured I could at least spark some creative thinking to go along with the drop videos.
You get the Leidenfrost effect dropping it into water as well, it isn't something specific to liquid nitrogen. Any sufficiently large temperature difference into a liquid will do it. You also get the Leidenfrost effect in the opposite direction by wetting something and dopping it into something like molten metal.
I would love to see the result. To see the comparisons based on the temperature difference. Cooling in water vs. Liquid Nitrogen :) I guess, that it will be even harder.
Maybe try a rifle bullet like a 5.56 or scale up and see what it can take. Maybe also some experiments on dampening the tail to see if you can prevent the destruction. It just needs to get rid of the energy.
btw I found this wonderful quote by Einstein yesterday: “As a child I received instruction both in the Bible and in the Talmud. I am a Jew, but I am enthralled by the luminous figure of the Nazarene . . . . No one can read the Gospels without feeling the actual presence of Jesus. His personality pulsates in every word. No myth is filled with such life. Jesus is too colossal for the pen of phrase-mongers, however artful. No man can dispose of Christianity with a bon mot.” Quote taken from “What Life Means to Einstein,” The Saturday Evening Post, October 26, 1929. Einstein was a physicist and professor at Princeton University. He lived from 1879-1955. To put it simply, Einstein was a christian. Like Newton and Maxwell. Now we have all the heavy hitters :)
The speed of sound through air is 343 m/s (1,126 ft/s). The speed of sound through glass is 4540 m/s. The muzzle velocity of a 22lr bullet is 430 to 550 m/s (1,400 to 1,800 ft/s)
Hey John thank you for stopping by. While I was writing little reviews for the books it made me recall the first exchange we ever had, at BrainStem in 2012. I'm sorry I laughed when you said you were a writer. I was thinking "he's an amazing video creator why would he want to focus on writing". It's interested how you can think you know how something or someone works but it/they're actually so much more complicated than your preconceived notions. I tried to preserve that conversation for posterity. I really enjoyed TFIOS and look forward to everything you write. www.smartereveryday.com/the-fault-in-our-stars
SmarterEveryDay I guess that I will speak for most of your subs if I say "I thank YOU for your work you putting into your videos". Cheers man, good luck in 2017 :)
The whole function of the long tail is to delay the reflection of the initial shock wave. when the bullet hits the drop, it generates a compressive wave starting at the point of impact. this doesn't break the bullet because the compressive strength of the glass is higher than the impact stress generated at the point of impact. however, once the wave is generated, it travels through the drop and is reflected at the end (all waves reflect when it hits an interface) and the reversal in phase of the wave means that the wave is now tensile (opposite of compressive). Glass is weak in compression so cracking occurs and continues to travel back to the point of impact. without the long tail, the delayed shattering will not be observable and given that the wave velocity in glass is between 2000 to 6000m/s, the shattering will occur a lot faster and might only just be observable with the high speed camera.
Yes. A vernacular way to put this is that the tail is where the stresses are greatest. Unless the glass is properly annealed, trying to melt the tail will have the same effect as shooting the drop with a bullet.
@Roman Semenov there is none just like tempered glass this already has massive stresses inside and in a way it's those that gives it's strenght. Glass is amorphous but an analogue of this in cyrstal structures would be work hardening, ie last loadings before metal fails due metal fatigue. Each time you increase the dislocation density and more dislocations get locked into place by coming across each other you need more energy to change the shape of material, until it becomes hard and brittle.
@@mertkocogullar6485 What about dipping the tail in wax or putting the drop into concrete with only the head exposed? Would that have any noticeable effect, for better or worse?
yeah Gorilla glass is made through a chemical process to get similar results, and it is used in cellphone screens to make them scratch and crack resistant
unfortunately no, as strong as the bulb is, the tail is quite delicate, and once the tail breaks it'll cause a chain reaction destroying the whole thing. That's why the ones that broke shatter tail first.
I'm also wondering, how a layered prince Rupert's drop works ( a drop made from glass with an onion peel affect ie 2 or 3 or more glass types layered that contracts at different rates to form different stress layers.
Your passion, excitement and genuine love for what you do is what makes all your videos amazing. Keep it up Destin! Resubscribed!
7 років тому+110
I just love how it's the bullets that are shattered by the impact! On another note, is there any practical application for this? Or are we doing it just because it's fascinating?
If you stuck lot's of them together, double sided, it could possible make armour, or at least supplement armour, so you could hide the tail behind a metal sheet in plastic. This could be a huge benefit on Navy ships. where weight and cost is an issue. For example, It could absorb the impact from Torpedoes, or railgun projectiles if made thick enough.
You might be able to use something like this with robotics I would imagine, armor I feel it would be less effective with as the thickness is what makes the drop so strong, because the outside cools. I could be wrong about that though, I only learned about this after watching his original video. An another note I notice that it probably wouldn't make great armor either because if anything hits it hard enough the vibrations will break the tail. Much like the trick with a spring where two people hold it and create a wave inside of it, this works similarly but only happens once instead of back and forth like it would in a spring. I don't think you'd be able to create anything that strongly except how it's created, so as armor I don't think it would work out. I'm also have no evidence to back up my claim so I suppose it's possible.
If I'm not wrong, the bullet actually turns into partially molten lead. In fact, almost all the kinetic energy of the bullet turns into heat, while crushing. That's because the PRD is not deforming. From the calorimetric equation we can calculate that a lead bulled melts in such impacts if shot faster than ~300 m/s, regardless from the mass. I'm not sure what material is the bullet made of, though
With so many comments, maybe this has already been proposed... Perhaps a third installment of the Prince Rupert's Drop series of experiments would be to calculate the energy stored in the bulb of the Drop and any potential practical applications of the use of the drop. This may lead to questions of proportional relationships between the mass of the bulb (or the entire drop) and the energy stored. There could also be a mathematical representation of the energy expelled along the long axis of the drop relative to diameter. Just spit-balling more ideas for Destin to produce more high-speed videos of Prince Rupert's Drops being shattered. They are so cool!
Sorry for the digging up, but at least the energy necessary to break it at actually the drop and not at the tail can be calculated. There are many videos in the internet with prince Rupert's drops in hydraulic press, and they measure also the mass necessary to break it which mostly is about around 20 tons. That leads for a drop of e.g. 5 cm diameter to a potential energy of approx 10 kJ. I don't try to calculate very precisely here because it seems to depend also a lot about how the drop is shaped (not only size, but also symmetry or form), for example I also found a video where they needed nearly 70 tons in order to break it. For sure it will also depend on the temperature difference between water and melted glas when making such a drop. But I agree, knowing these relationships in principle (not in quantitative way, that gets super annoying) would be interesting.
Commenting a video with so many comments can seems useless, but i wanted to say you that your channel is inspiring and i'm glad i unsubscribed and subscribed again! Keep going to make UA-cam smart! Greetings from italy!
so there's other people from italy who watch smarter everyday? the real problemisn't the amount of comments, but the fact that appreciation comments are ignored simply because they're all the same, try to bring in something interesting, something... "more" to it.
Destin I have a problem. I'm making a playlist on UA-cam of all my favorite science/engineering videos for future reference and enjoyment. However, I find myself adding every single video you have uploaded! I enjoy them all so very much and learn so much more! I look up to the brilliant, cosmopolitan minds such as yours and wish you all the best in future endeavors. Thank you for all that you have done and will do! I appreciate it all and look forward to getting smarter every day!
no because most of the energy that is being deflected would be not spreading but rather, dissipating in the orb and not have anywhere for the energy to go. so, in return, it would shatter from exactly the point it was shot in or it would shatter from the inside out.Also, creating a spherical prince Rupert's drop is impossible without additional tools, meaning that you would be tampering with the inside of the drop. Watch Destin's video on making a Rupert's drop, you'll understand why it would be impossible.
What if you created a special spherical mold, which you heat to the same temperature as the glass. You then put the molten glass in that mold, and dunk it all into water. that should work, right?
The shape of the string after the bullet impact is very telling! It’s like the tail of the drop experienced whiplash.Right after the impact the drop moves back about an inch and the front has a nearly horizontal section to it in reaction to that.
bigfluffy unicorn The caliber he was using looked like a 22lr, that can barely make it through a skull. However, a 308 could go through like 3 skulls. I'd like to see if the head of the drop really is indestructible
Andrew Godly t think it would harm it, but the bullet would get creased too. idonno how fast it goes, but i've seen a vid with a hydraulic press, and the drop exploded after 20 tons of pressure
due to the experiments done by +presstube the prince rupert's drop (atleast the one he used) withstood a hydraulic strength of 20tons. it would be interesting to see +SmarterEveryDay make a video quantifying the strength to size factor, and figure out how strong the prince rupert's drop really is, based off the molecular structure of glass compared to the surface area of the bulb of the Prince Rupert's Drop. Destin, i hope you see this, and it would satisfy everyone's curiosity, along with the ever growing thirst for knowledge. i've done research, and no one has actually done further investigations into the rupert drops (other than breaking them)
try making a bullet from a prince Rupert's drop in the shape of a bullet, and see how deep in will penetrate into a group of steel or lead plates. ( I'm wondering if it would make a super hard hitting armour piecing projectile ) but I do think you would need a faring or waddings to prevent it from jamming or shattering before it leaves the barrel
1 more thing how would radioactive glass work, and would it make an RAP or a pulse of radiation or even an EMP ( if it dose it might be used in some type of mechanism )
It's nearly impossible to shape a prince Ruperts drop into anything, because if the tail gets just slightly damaged (or even any other part of the glass, which is very hard though) it shatters. So if you were to fire it, it would theoretically damage the drop and the glass would shatter and make for good schrapnell (or some good shotgun slug filling)
@@rudolfdirks9253 just put a small magnetic metal ball inside the molten glass, and then launch the Rupert's drop with electric coilgun. Or just put the drop in metal launch casing. Maybe it would survive such a launch.
Hello Destin, I have a theory about subatomic particles and the Hadron collider, however I cannot get the information I need from CERN. Your experiment here might help me with my theory. Do you have the ability to measure the bullet speed and the speed of the shock wave traveling through the drop using your high speed footage. You know your exact fps rate of your camera and the distances involved with the bullet. Essentially, if it is possible in your very busy day could you forward me the bullet speed, bullet fragment speed and shock wave speed. I know that this is quite a bit to ask. All in the name of science! BTW, this might give me some answers about sub atomic particles and light speed. Thank you very much for your time.
It was amazing to see the bullet just shatter. I really enjoyed the shot where the bullet fragments fly out in a circle moving one direction, and the shock wave in the glass is moving in the other direction.
Note how much faster the crack propagates in the glass in respect to the speed of the bullet. The frame by frame allows us to see that clearly. Amazing!
Destin, i have a question, at 5:29 when the bullet hits the drop, it start breaking from the back, before the wave has time to move through the drop (it eventually does and start breaking from the middle). but the breaking happens before the wave has time to move to the end, what causes this ? I've made some back-of-the-envelope calculation and the breaking happens 0.031 ms after the bullet hits, so whatever caused the breaking to happened traveled at around 4 645 Km/h through the prince rupert's drop. Can it be the drop starting to move so fast that it hits the air strong enough to break ? since the tails is much more fragile at this end. I dont think it's a good explanation but since the wave doesn't have the time to travel all the way to the back, i dont know what caused it. any ideas ?
I am thinking this is still the compression wave. It is hard to know what the size of the drop is. So i am a little skeptical of the speed calculation that you did. However given that the previous video of a prince Rupert drop had failure fronts of much higher speeds I am willing to bet that a compression wave could have been possible for this too. If it were the drop moving against the air I see two problems. First the air would just move out of the way. Secondly we would see the motion.
I agree with you, i dont have a good explanation for the breaking in the back. for the speed calculation i did a rough hestimate of 40cm of lenght for the drop. also about your two argument, air would indeed move out of the way but if the speed is high enough it can act as a "wall" or a least a barrier strong enough to break the weak glass and two i agree but we dont see the motion since the drop breaks immediatly
Quick google search Says speed of sound in glass is ~14,000 Km/h. I'd expect it to be different in a Prince Rupert's drop than whatever this generic glass is, but compression waves should certainly be able to move that fast.
The speed of the sound inside solids are faster than in air, on google I found it's 3962 m/s in glass, considering yet that rupert's drop is over internal tension it may not be the exactly value but should be close enough. So it's more likely the curve we can see at this given time is just the drop acting as a spring absolving the kinetic energy from the bullet and the real shock wave is a pressure variation moving much faster than the bullet.
Bruno de Lima good point. I know the curve is the compression wave going through the glass, but as you see the wave progressing, you can see the drop shatter AHEAD of the wave. If you look closely, the wave hasn't even done half of the way to the tail. Also the speed I calculated was in km/h (so 1290m/s) which is a very very VERY rough hestimate just to have a idea of the scale.
If you covered something in prince Rupert's drop, would it technically make it a one-shot bullet proof shield? There would still be the force, but it wouldn't be a direct point impact. Someone should try doing that, covering Ballistic Gel with prince ruperts and seeing what damage happens.
How would you weave the drops so that they 1. Don't let the bullet through. 2. Spread the impact over a large enough area to actually save anything from the bullet. ?
So the head librarian of the royal society of London handles 400 year old documents without gloves to protect the paper from the oil of his fingers? Interesting...
1wsx10 I'd imagine it might just act like a whip, the shockwave speeding up down the length of the drop as the thickness decreases. It'd be very interesting to see how a shockwave travels over a long drop and compare the speed at the head vs. tail. Wow, your comment really has me thinking...
If there was a way to truly isolate the drop without vibration through the whole, perhaps this could work. Unfortunately, that's pretty much impossible. Similarly, even if you managed to melt off the tail without exploding the drop (extremely unlikely), the stresses within the drop would mean that without the tail, it would be considerably more fragile.
Thats kind of true, but i rewatched a video from Techtastisch (a german youtube channel) and he accidentally made prince Rupert drops where de failure point(the part that makes it explode) actually was so far in the drop that you can't reach it. But he managed to break it with a vise. It would be interesting to se smarter every day's drops in a vise, and test if they would break too
I've been watching your videos 24/7 since i first found your channel last week and im positive ive learned more in that time frame than i ever did or would have in highschool. You sir, are the GOAT
It would have to transfer the the energy causing the vibration into something, and if that would be wood, it would break when hitting the wood, instead of transfering energy. I think it would break with a rubber end too, inside the enclosed area. I can appreciate the idea, it's a good one, but I doubt it would work.
Yeah i was thinking same i think all he has to do, putting the drop on edge of table while tail is off table and i think it will ever break because of bullet, it will fly away and probably get broken because of hitting ground or a lot more of them will survive. Only one of them survived because it could loose rope before tail got too much pressure by rope and lost enough energy while flying away..
Someone should make a Rupert's Drop in zero gravity. So the Rupert's Drop would be a sphere (..right?) without a tail and has no weakness in any direction. If you shoot at this sphere I think no bullet has any chance. This would be awesome! :D
This same principle in design is found in the Mantis shrimp clubs... it's outstanding that the tension between the two interacting is what makes it so strong. Amazing!!
That man was destined to be a head librarian.
Susan Neckebard he was destined to become an immortal librarian
+WarNinja gaming are you kidding? assuming there is a god that guy is clearly him.
he didn't "shh" enough though
I'm feeling Harry Potter
OpalmeshSpringtime he reminds me of professor Lupin
Incredible how strong it is. It would be interesting to see how much hydraulic pressure it would take to actually crush it.
zollotech they did that on Warped Perception I just watched it . it was like 20 tons
Hydraulic press channel did one on this as well.
SPOILER: Hydraulic Press Channel crushed one that took 75 tons before it broke.
2
Just slight damage to tail.
can you think of a way to dampen the Shockwave so that the prince Rupert's drop would not shatter from the tail. That would be an interesting experiment to try.
My friend suggested I should insulate the tail in great stuff. +Russell Duffer
so, are you going to try?
Yes, it seems that the last one probably survived because it had a thicker tail, that was less susceptible to the shockwave.
+SmarterEveryday
Could you cut the tail off just after it is formed, or does the glass cool to fast for that?
I would be interested to see if a liquid might work better than a solid. You're looking for something to most readily accept the energy from the shockwave. Mineral oil? Water? mercury? Is higher density better or worse? How much of the end should be submerged? I wonder what the math would look like.
That British guy looks like a British guy
Moo That British guy sounds like a British guy....
That British guy feels like a British guy
I can tell you now a very small percentage of British men are like this
*B R I T I S H G U Y* *?*
LADSLADSLADSLADSLADSLADS
Thank you to everyone who has:
A. Resubscribed and hit the bell. bit.ly/Subscribe2SED
B. Contributed captions in your native tongue. ua-cam.com/users/timedtext_cs_panel?c=UC6107grRI4m0o2-emgoDnAA&tab=2
Is it possible to make a Prince Rupert's Drop without a tail?
SmarterEveryDay what do you think would happen when you vaccum seal a prince ruperts drop? would the violent shattering break the bag?
Please contact Matt from demolition ranch and do a video with him shooting this drop with a 50BMG!
Or if you were to remove the tail through something a little less impactful. Like melting it off.
what happens if you set the tail in cement or something else to help hold it together...would it make the tip more durable?
I'd like to see a harder bullet used, perhaps steel shot or maybe even a spark plug? would the glass still destroy the bullet? I'd try it myself; I actually have a box of steel shot for my rifle, plenty of spark plugs, and I could certainly make a Rupert's drop, but that camera...
Cody, you're the best.
Cody'sLab both harder and softer would be fun to see
Cody'sLab prince Rupert drop vs .50 cal
Or maybe try different rounds and different calibers like AP, API, Hollow point, etc.
The problem wouldn't really be with the bullet, the thing is that when the bullet hits and subsequently shatters, it transfers a bunch of its kinetic energy into the glass, that energy then forms a shockwave that shakes the tail to pieces, and THAT is what finally causes the drop to explode. If you used a harder bullet or a larger caliber the same thing would still happen. Possibly a harder bullet might glance off it I guess, and it could survive better since less deformation would mean less transferred energy.
Then again, I am sort of curious if even a .50 cal could rip it apart from the bulb end...
make a giant Prince Rupert's drop, then shoot that.
AbyssmalAngel with a cannon
: )
e1123581321345589144 or just .50cal it would be easier to do
twoja stara cannon would still be cooler to see.
From a battlecruiser
I wonder if tying the string to the tail was causing most of them to break? You can see the shockwave trailing down the drop and the tail begins shattering at the tip before the shock wave reaches the tip. But just before the shockwave the drop flexs and bends. If the tail is touching anything while it begins to flex, then the fragile tip snaps and starts the chain reaction. If the tail was free hanging, the flexing might not be a problem? Very curious.
I think it's the energy transferred to the tail that makes it shatter, because it is shaken to bits .
Then the break occurs as usual
Exactly my hypothesis. In the other video where only the head is hanging the drop doesn't break
It has to do with the internal stresses in the glass created by cooling it so quickly. Unless glass is annealed, or cooled slowly at specific temperatures for specific periods, it retains stress. If you even lightly tap stressed glass at the correct point, it will shatter. This glass is weakest at the thin spots, thus, the tail. When the tail is disrupted, the piece shatters instantly. Glass is amazing.
Imagine if they could capture the strength of the drop into a fishing rod but without the tale that would be insane how strong it would be
I was thinking that dipping the tails in wax would give them a bit of reinforcement without risk of shattering it on accident. I considered using tape, but that would probably be tough to do without breaking it.
Nice shot 5:28 was unreal
Grant Thompson - "The King of Random" I love your videos. Think of using a phantom camera like Destin does ☺️
You and Smarter every day should collaborate on something.
Grant Thompson - "The King of Random" Yeah, I showed my dad and brother because it was just to good to keep to my self.
It stopped the bullet in it's tracks. if you could harness this strength in a pane of glass with no tail..
Zreknarf
Naw, graphene would make a much better material
Never seen anyone handle old paper without gloves before. :)
Hear hear
Kalle Äger cabage
They implement that policy because you lose sensitivity with the gloves, and is easier to damage the volume. But policy may be different from place to place (you may want to check the "objectivity" channel to see more about the royal society collection)
Check out the channel Objectivity which takes place at the Royal Society where Keith is one of the regulars. They never handle brittle paper with gloves because they decrease your sensitivity and thus increasing the risk of tearing the paper.
Kalle Äger hes a rebel, dont care for nobody follows no man lives his on way a free way i should be asleep right now wow its late
it's crazy all the things we miss with the naked eye
It would be amazing to be able to slow time instantly and experiment with cool stuff :)
It's crazy all the naked things we miss with the eye.
Ik right that's why I like to buy clothes 😂😀
imagine what we could see with the dressed eye..
kidding...
CyclingDane eyes wide shut
This is the perfect demonstration of physics. Internal stresses as opposed to external forces. Beautiful cinematography Destin! You should test one of those window breaking devices that you put on a car keychain incase your car floods, and see if it hurts the Drop at all
Would the pressure even get distributed? Great idea 😁
You're beginning to outslowmo the SlowMo Guys!
Damian - No. He has to beat 343,900 FPS to beat the Slow Mo Guys. And a reason to go that slow.
Damian also it's the same exact camera XD
Damian Also, Destin literally loans that camera to Gavin to do some of the slow mo. You can hear Gavin saying "Thanks Destin" in a number of videos.
They've done videos together already.
Just another UA-cam commenter they both use a V2511... that's pretty expensive so Destin literally had to ship his camera to them until they got their own
Glass is an amazing material. As part of a project to design a Capillary Electrophoresis (CE) DNA sequencer, I was introduced to fused-silica capillary tubing which is made from the purest form of glass. The capillary tubes we used were 50 microns ID by 360 microns OD, and coated with polyimide polymer for protection from hydrogen embrittlement. A human hair usually could not fit into the inside of this tubing. This tubing could be tied in a simple loop-knot and drawn so tight that the loop diameter could be less than 6mm; if you let go of one end, the knot would quickly untie and recover to a straight shape without any kink or curve! I've never seen any metallic wire or microtube do this. The fused silica seems to be the perfect spring material.
Also interesting is the very high dielectric strength of this fused silica, about 4 kV/mm. Since we used 15 kV for electrophoresis, the tubing could allow a short-circuit through the glass wall when its OD (outside surface) physically contacted a conductive (metallic) electric ground. The short-circuit would punch a nearly perfect, tiny cylindrical hole straight through the tubing wall without breaking the tube! Note that the electrical potential was produced with a charged ion-rich DNA separating aqueous solution that filled the tubing, so the short-circuit was from fluid inside to metal on the outside. Early electrophoretic experiments failed because it was very difficult to find the tiny electrical breaches in the glass wall, some only a few microns in diameter. Only Scanning Electron Microscopic (SEM) images revealed the holes which appeared perfectly round and smooth. Of course, I learned to fully isolate the tubing from conductors, except at the ends. Glass is one of the most exotic materials among many I ever used in engineering.
SIMKINETICS Very educational. Thanks for the post.
+MCI Theater Class You're welcome!
Awesome. There a chance Destin can take a tour of your labs and do a video about that?
Amazing post
+Aron I was involved in that project 24 years ago. The instrument we
invented & designed turned out to be the quintessential, seminal
technology for forensic (quick) analysis of DNA, and it became the
worldwide standard from which many more sophisticated, multi-channel DNA
analysis instruments were developed since. The original is still being
sold & used. The panoply of its novel technologies encompassed
breakthroughs in microfluidics, electrophoresis, electrokinetic
injection, Laser-Induced Fluorescence (LIF), polymer chemistry,
spectrographic optics, peltier-cooled CCD detection and algorithm
development; so, even an old unit could be a playground for Destin! It
goes by the moniker 'ABI Prism 310 Genetic Analyzer'.
I'm retired now, so I no longer have a lab.
MOTHER OF GOD
i want a demolition ranch
slomo guys
and smarter everyday
collab
NOW!
barrett 50 cal vs prince ruperts drop at 1.000.000 fps
just imagine the awesomeness for a second there
50 cal would be too much I think but a 9mm, .38, .45 or a 5.56x45mm would be nice
Igor M. i want to see em all! :D
This is one of the most incredible things I've ever seen! Thank you for all your hard work that you put into making fascinating and educational videos!
The glass breaking moves faster than the bullet.
ur so smart
PK I already knew that. You're too stupid to comprehend how fast the glass shatters. To think the glass must be shattering at 700-900 mph.
Thats abit of a low ball, its easily moving at 1500+ fps, thought id say safer to judge at around 2000feet per second(1350mph).
Those .22 bullets out of a rifle should be traveling upwards of 1000 fps, so I'd bet you're right, Furyfoe.
Furyfoe Wow, that's insane. Any idea of glass shatters at these speeds normally?
Prince Rupert's glass vs 1000 degree glowing knife
62746377 Fan hahaha
Molly Alsopp t
Seeing as how glass is an insulator, it really wouldn't do much.
Prince Rupert's glass but every time it says glass it gets faster
You don't have to unsubscribe. I can see the bell icon already.
geetarwanabe : Old subscriptions may be treated differently under the new YT policies.
William Dye - I'd love any documentation or analysis you might have concerning this
I check my subs list, no need of pesky notifications all over my devices.
might also be so he can see how many people did it (would see stats for subs)
youtube commenter #6872149 : UA-cam has lowered the subscription count on some channels, claiming that the subscriptions were from bots and such. If YT has since improved their detection system, they may trust newer subscriptions over older ones.
i love how the bullet at 4:45 breaks before the drop explodes, that just shows how strong it is
Prince Rupert's Drop VS a hydraulic press, anyone?
Hery it's been done I can't remember what Chanel but if you just search it you should find it.
but theres no accent
I think its in Press Tube
Prince Rupert's Drop vs. Chuck Norris. :p
I was wondering the same, here it is: watch?v=OlNVz_8-tow
+alantonix213 no way the drop wins
How BIG can you make a Prince Rupert's Drop?
First, you mutate a sperm cell to a supermassive size as seen by using energy bursts from a nuclear reactor. You then freeze it with liquid nitrogen. You have to be careful, however, as once they take on such a size, they can be quite violent. For this reason, it's best to have a containment device of some sort. But once you freeze them, they are no longer a hazard.
that's what really happened at chernobyl, sorry 'bout that one.
I think a better question would be, what if you made one in space? Would the zero gravity allow a sphere to be made and thus be indestructible, due to not having a fragile tail?
Wouldn't that just be a glass sphere?
Sara Arceneaux can I get my virus in my choice of color? I'm quite partial to mauve.
Next UA-cam trend "Glowing 1000 degree knife vs Prince Rupert's Drop"
ha ha ha
you forgot all the caps "EXPERIMENT Glowing 1000 degree KNIFE VS PRINCE RUPERT'S DROP"
Something I really love about your youtube channel is the fact that I'm actually getting smarter for every video i see! You have awesome content and videos, keep up the good work!
Legend says that if you're this early, you will gain the knowledge of all the scientists ever featured on Smarter Every Day
Is that true?
Smiling Kanye that's a lot of knowledge...
It's true that this kind of comment is retarded, yes.
theLegend27?
calling yourself a legend eh?
Oh man is that cool. So...When are you going to try an AP round against it rather than the soft lead?
NightHawkInLight was thinking the same thing lead is too soft to let it end here
50 BMG AP round yeah?
that would be the battle of the giants
hahaha with a steel core
indeed, send some (or someone who can make he drops) to DemolitionRanch :P
A couple questions.
Would a sphere rather than a drop quenched in cold water have as much strength without the vulnerable tail?
And
Would the temperature of the quenching fluid effect the final strength?
I suggest quenching in , hot tap water, cold tap water, near freezing water, and liquid nitrogen ; then destructive test in hydraulic press with pressure guage and high speed camera to compare.
I think the first two would be indistinguishable without very precise high-end instruments. Use boiling water.
ZEUS O. thank you for that science project topic
Were it a sphere, it would simply be a glass ball. While I'm not familiar with the specifics of the drops, I do know that the tail is required. I think of it that, in order to maintain an equilibrium of strength, the drop requires an extremely weak point (the tail) in order to make up for the extremely strong drop itself.
Destin, This is one of my favourite channels, I even make a point of watching the whole of the adverts before your vids.
Keep up the good work.
I'm impressed by the people who help you with translations. Big thumbs up to all them too. You are all doing a great job. Looking forward to more brill content.
Put it in a hydraulic press at the same camera speed so therefore no shock waves can cause the tail to cascade the cracking.
OnePercent hydraulic press already did that. It dented the metal
I saw that, Radi Bear! That was incredible to see! Amazing that something that small can be so strong and sturdy.
I think he means to hold it in place for the bullet to remove the freeswing factor. Not actually copy HP's video.
Now shoot it with a PTRD-41 anti-tank rifle m8
Free Diugh yeah I got disappointed when he was just using a .22
Or we could just nuke it.
Yes we should take off and nuke the site from orbit, it's the only way to be sure..
I think to be more sure we need Goku to blast it with a 20 episodes worth of spirit bomb energy.
Haha, I thought you were gonna have goku punch it as hard as he can... Lol. That should be in an episode of dbs. Chichi asks goku to punch the droplet and goku dislocates his knuckle.
wow, I find it super interesting that the head survived and was bullet proof, but the impact vibrates and breaks the weak tail, which in turn releases tension and explodes the head. the head technically survived the bullet impact.
Watch the first video he did on the drop!
Demo Ranch needs to do this with his 50 BMG
Hunter Ross yes
With armour piercing incendiary tracer rounds
Destin has his own .50 bmg
So, why not shoot Destin's .50 and Matt's 3 .50's at the same time, cause what is better than one .50 bmg, that's right four😂😂
Destin shot one with an ak-47. Check his new video!
I'm still waiting on matt to get a gold 50 bmg
more like MindBlownEveryDay
So this episode had me thinking about the creation of the Prince Rupert's Drop. It's created by dropping molten glass into water but what happens if you drop it into something colder? Will the faster creation make it more or less strong? Lets say we dropped it into liquid nitrogen. Would it cool so fast from outside in that the inside cooling would cause even more internal pressure than normal?
Also, using this method, could you pour molten glass into a iron sphere mold and drop the mold into the liquid nitrogen preventing the creation of the tail so there is no weak point, making a practically indestructible sphere of glass?
I'm sure there are many things I am not thinking of as I don't fully understand the physics of the drops creation and all of the forces involved but I figured I could at least spark some creative thinking to go along with the drop videos.
leidenfrost effect possibly if you just drop it in liquid nitrogen by itself.
*Leidenfrost
You get the Leidenfrost effect dropping it into water as well, it isn't something specific to liquid nitrogen. Any sufficiently large temperature difference into a liquid will do it. You also get the Leidenfrost effect in the opposite direction by wetting something and dopping it into something like molten metal.
I would love to see the result. To see the comparisons based on the temperature difference. Cooling in water vs. Liquid Nitrogen :) I guess, that it will be even harder.
Is it not possible to just cut off the tail?
THE BULLET SHATTERED?! 😲
Malicious Affection no it crumpled inside and some pieces broke off
Malicious Affection Yeah, bullets do that when shot at hard objects.
It's only lead.
Bullets are made to crumple on impact
AbsoluteTrash Not all rounds are made to crumple, AP rounds are meant to pierce steel. Hollow points are made to do massive damage to soft targets.
"Goggle up, science is about to happen"- love that line
Maybe try a rifle bullet like a 5.56 or scale up and see what it can take. Maybe also some experiments on dampening the tail to see if you can prevent the destruction. It just needs to get rid of the energy.
btw I found this wonderful quote by Einstein yesterday:
“As a child I received instruction both in the Bible and in the Talmud. I am a Jew, but I am enthralled by the luminous figure of the Nazarene . . . . No one can read the Gospels without feeling the actual presence of Jesus. His personality pulsates in every word. No myth is filled with such life. Jesus is too colossal for the pen of phrase-mongers, however artful. No man can dispose of Christianity with a bon mot.”
Quote taken from “What Life Means to Einstein,” The Saturday Evening Post, October 26, 1929. Einstein was a physicist and professor at Princeton University. He lived from 1879-1955.
To put it simply, Einstein was a christian. Like Newton and Maxwell. Now we have all the heavy hitters :)
Hmm
NO, he wasn't a christian, he was a pantheist. en.wikipedia.org/wiki/Religious_and_philosophical_views_of_Albert_Einstein
Newton was also an alchemist
+Dan Frederiksen
Einstein actually referred to Jesus as a myth... in the quote you provided.
I clicked the bell you cutie pie
You made me smile in the not internet weirdo kind of way +Vikings488
SmarterEveryDay cmmon get a hotel room
SmarterEveryDay i have an idea. If you can make the tail shorter there is a chance that it might not break
The speed of sound through air is 343 m/s (1,126 ft/s).
The speed of sound through glass is 4540 m/s.
The muzzle velocity of a 22lr bullet is 430 to 550 m/s (1,400 to 1,800 ft/s)
When I found this channel, my faith in youtube was restored
(Thanks for listening to TFIOS, Destin!) What a great video!!!! -John
Hey John thank you for stopping by. While I was writing little reviews for the books it made me recall the first exchange we ever had, at BrainStem in 2012. I'm sorry I laughed when you said you were a writer. I was thinking "he's an amazing video creator why would he want to focus on writing". It's interested how you can think you know how something or someone works but it/they're actually so much more complicated than your preconceived notions. I tried to preserve that conversation for posterity. I really enjoyed TFIOS and look forward to everything you write. www.smartereveryday.com/the-fault-in-our-stars
Love this 💜
Use a 50 BMG to break the drop.
Nick Ross with ap rounds
Michael Nicholson Even better.
use those red tipped "heat seaking rounds"
I never thought I'd say this to Donald Trump before...
Not enough firepower.
#FuckingCallWoTAndBorrowACheiftan
Ehmmm... are you sure they are heat SEAKING? Not just incendiary or something like that?
you are the first channel where I actually clicked at that notification bell..well earned!
Thank you so much. +MrDumbDrunk
SmarterEveryDay I guess that I will speak for most of your subs if I say "I thank YOU for your work you putting into your videos".
Cheers man, good luck in 2017 :)
idea: melt the tail, shoot the rest of the drop
It would break, the drop needs the tail to maintain strength.
The whole function of the long tail is to delay the reflection of the initial shock wave.
when the bullet hits the drop, it generates a compressive wave starting at the point of impact. this doesn't break the bullet because the compressive strength of the glass is higher than the impact stress generated at the point of impact.
however, once the wave is generated, it travels through the drop and is reflected at the end (all waves reflect when it hits an interface) and the reversal in phase of the wave means that the wave is now tensile (opposite of compressive). Glass is weak in compression so cracking occurs and continues to travel back to the point of impact. without the long tail, the delayed shattering will not be observable and given that the wave velocity in glass is between 2000 to 6000m/s, the shattering will occur a lot faster and might only just be observable with the high speed camera.
Yes. A vernacular way to put this is that the tail is where the stresses are greatest. Unless the glass is properly annealed, trying to melt the tail will have the same effect as shooting the drop with a bullet.
@Roman Semenov there is none just like tempered glass this already has massive stresses inside and in a way it's those that gives it's strenght. Glass is amorphous but an analogue of this in cyrstal structures would be work hardening, ie last loadings before metal fails due metal fatigue. Each time you increase the dislocation density and more dislocations get locked into place by coming across each other you need more energy to change the shape of material, until it becomes hard and brittle.
@@mertkocogullar6485
What about dipping the tail in wax or putting the drop into concrete with only the head exposed? Would that have any noticeable effect, for better or worse?
is it breaking the bullet
Yes, Silica Glass just shattered a speeding bullet.. +mario cardenas
SmarterEveryDay I feel like you're just being a smart alek, but it's a genuine question! Bullets shatter pretty easily, and it's only a .22
Yeah, starting at 5:10, after he shot it there were bullet fragments
It's more a tone of disbelief, I think.
mario cardenas it's a .22 pure led bullet even wood can make it splatter.
could the strength of it have practical applications?
yeah but it might be a glass cannon, pun intended
yeah Gorilla glass is made through a chemical process to get similar results, and it is used in cellphone screens to make them scratch and crack resistant
just as an educational tool. Its pretty cool we keep making them for this long with no real world use tho...
+jockslap its called hardened steel
unfortunately no, as strong as the bulb is, the tail is quite delicate, and once the tail breaks it'll cause a chain reaction destroying the whole thing. That's why the ones that broke shatter tail first.
I thought it was Objectivity for a sec.
DeadlyAlive Haha, same
DeadlyAlive Technically you aren't wrong. Brady was there with him. Because apparently Brady is the Royal Society guy.
DeadlyAlive I thought it was Slo Mo Guys from the title, then Objectivity, then realized it was Destin lol
I'm also wondering, how a layered prince Rupert's drop works ( a drop made from glass with an onion peel affect ie 2 or 3 or more glass types layered that contracts at different rates to form different stress layers.
Wow! That was awesome! The slow-mo and reverse was excellent. I'm actually surprised the bullet didn't actually break it.
Your passion, excitement and genuine love for what you do is what makes all your videos amazing. Keep it up Destin! Resubscribed!
I just love how it's the bullets that are shattered by the impact!
On another note, is there any practical application for this? Or are we doing it just because it's fascinating?
Arturo Torres Sánchez I have no idea, but I am in the fascinated crowd.
Prince Rupert drop armor
If you stuck lot's of them together, double sided, it could possible make armour, or at least supplement armour, so you could hide the tail behind a metal sheet in plastic. This could be a huge benefit on Navy ships. where weight and cost is an issue. For example, It could absorb the impact from Torpedoes, or railgun projectiles if made thick enough.
You might be able to use something like this with robotics I would imagine, armor I feel it would be less effective with as the thickness is what makes the drop so strong, because the outside cools. I could be wrong about that though, I only learned about this after watching his original video. An another note I notice that it probably wouldn't make great armor either because if anything hits it hard enough the vibrations will break the tail. Much like the trick with a spring where two people hold it and create a wave inside of it, this works similarly but only happens once instead of back and forth like it would in a spring. I don't think you'd be able to create anything that strongly except how it's created, so as armor I don't think it would work out. I'm also have no evidence to back up my claim so I suppose it's possible.
This is what has inspire guerilla glass for phones and screens. In that it's manipulating the size of the ions in the glass to create tension.
If you wrap the tail of the drop in putty to dampen the shockwaves, would you then have THE STRONGEST MATERIAL EVER?
Bram Verreussel no
It won't dampen vibrations within the glass.
What if the tail is in the water?
good idea but I think no
Bingo, it’s the internal vibrations that’ll kill ya
Destin, I dare you to put a prince Rupert's drop in clear resin and leave the tail out and see what happens if you break the tail.
If I'm not wrong, the bullet actually turns into partially molten lead. In fact, almost all the kinetic energy of the bullet turns into heat, while crushing. That's because the PRD is not deforming.
From the calorimetric equation we can calculate that a lead bulled melts in such impacts if shot faster than ~300 m/s, regardless from the mass. I'm not sure what material is the bullet made of, though
Daniel ilDanny It's a .22 LR bullet, made of lead, and flies at around 370-400m/s. Your math is correct.
yea it kinda melts for a short time and gets a different shape :d
Daniel ilDanny I KIND OF understood what you just said
Daniel ilDanny It's not turning into partly molten lead,the lead is just very soft
I think I proved my point with the calorimetric equations. Can you prove yours ?
Why would anyone give this video a thumbs down ? This video was amazing . Such shocking results . Thank u for making it .
The fact that Prince Rupert drops is not shattered by bullet but by its tail
With so many comments, maybe this has already been proposed...
Perhaps a third installment of the Prince Rupert's Drop series of experiments would be to calculate the energy stored in the bulb of the Drop and any potential practical applications of the use of the drop. This may lead to questions of proportional relationships between the mass of the bulb (or the entire drop) and the energy stored. There could also be a mathematical representation of the energy expelled along the long axis of the drop relative to diameter.
Just spit-balling more ideas for Destin to produce more high-speed videos of Prince Rupert's Drops being shattered. They are so cool!
Sorry for the digging up, but at least the energy necessary to break it at actually the drop and not at the tail can be calculated. There are many videos in the internet with prince Rupert's drops in hydraulic press, and they measure also the mass necessary to break it which mostly is about around 20 tons. That leads for a drop of e.g. 5 cm diameter to a potential energy of approx 10 kJ. I don't try to calculate very precisely here because it seems to depend also a lot about how the drop is shaped (not only size, but also symmetry or form), for example I also found a video where they needed nearly 70 tons in order to break it. For sure it will also depend on the temperature difference between water and melted glas when making such a drop. But I agree, knowing these relationships in principle (not in quantitative way, that gets super annoying) would be interesting.
Commenting a video with so many comments can seems useless, but i wanted to say you that your channel is inspiring and i'm glad i unsubscribed and subscribed again! Keep going to make UA-cam smart!
Greetings from italy!
It's not useless. Thank you.
SmarterEveryDay you are the man!
so there's other people from italy who watch smarter everyday?
the real problemisn't the amount of comments, but the fact that appreciation comments are ignored simply because they're all the same, try to bring in something interesting, something... "more" to it.
apparently!
Crypto 謎 and a. I have been trying to get
One of the best UA-cam channels around
Destin I have a problem. I'm making a playlist on UA-cam of all my favorite science/engineering videos for future reference and enjoyment. However, I find myself adding every single video you have uploaded! I enjoy them all so very much and learn so much more! I look up to the brilliant, cosmopolitan minds such as yours and wish you all the best in future endeavors. Thank you for all that you have done and will do! I appreciate it all and look forward to getting smarter every day!
music so chill
I wonder if you could make spherical Prince Ruperts Drop in zero gravity. and then if it would be as strong but no point of failure?
my thoughts exactly!
no because most of the energy that is being deflected would be not spreading but rather, dissipating in the orb and not have anywhere for the energy to go. so, in return, it would shatter from exactly the point it was shot in or it would shatter from the inside out.Also, creating a spherical prince Rupert's drop is impossible without additional tools, meaning that you would be tampering with the inside of the drop. Watch Destin's video on making a Rupert's drop, you'll understand why it would be impossible.
What if you created a special spherical mold, which you heat to the same temperature as the glass. You then put the molten glass in that mold, and dunk it all into water. that should work, right?
But then it would be launched across the room and hit a wall or somrthing
so beautiful when a bullet gets annihilated by glass
The shape of the string after the bullet impact is very telling! It’s like the tail of the drop experienced whiplash.Right after the impact the drop moves back about an inch and the front has a nearly horizontal section to it in reaction to that.
I'd like to see what a higher caliber does, like a 308
well, after seeing 5:19 , i'm not sure it would do anything.
bigfluffy unicorn The caliber he was using looked like a 22lr, that can barely make it through a skull. However, a 308 could go through like 3 skulls. I'd like to see if the head of the drop really is indestructible
Andrew Godly t think it would harm it, but the bullet would get creased too. idonno how fast it goes, but i've seen a vid with a hydraulic press, and the drop exploded after 20 tons of pressure
Check out the video with frank/prince rupert's drop vs hydraulics press, if you actually want to see it shatter.
Andrew Godly additionally, try a higher powered bb, a 32cal also
due to the experiments done by +presstube the prince rupert's drop (atleast the one he used) withstood a hydraulic strength of 20tons. it would be interesting to see +SmarterEveryDay make a video quantifying the strength to size factor, and figure out how strong the prince rupert's drop really is, based off the molecular structure of glass compared to the surface area of the bulb of the Prince Rupert's Drop. Destin, i hope you see this, and it would satisfy everyone's curiosity, along with the ever growing thirst for knowledge. i've done research, and no one has actually done further investigations into the rupert drops (other than breaking them)
I'm Coyote Peterson and I'm about to rip a tag off a mattress
PK Wrong vid bud
chase dangerfield Methinks the lady doth protest to much.
May I just say good job to whomever wrote the subtitles. I very much appreciated their preciseness.
try making a bullet from a prince Rupert's drop in the shape of a bullet, and see how deep in will penetrate into a group of steel or lead plates. ( I'm wondering if it would make a super hard hitting armour piecing projectile ) but I do think you would need a faring or waddings to prevent it from jamming or shattering before it leaves the barrel
1 more thing how would radioactive glass work, and would it make an RAP or a pulse of radiation or even an EMP ( if it dose it might be used in some type of mechanism )
It's nearly impossible to shape a prince Ruperts drop into anything, because if the tail gets just slightly damaged (or even any other part of the glass, which is very hard though) it shatters. So if you were to fire it, it would theoretically damage the drop and the glass would shatter and make for good schrapnell (or some good shotgun slug filling)
@@rudolfdirks9253 just put a small magnetic metal ball inside the molten glass, and then launch the Rupert's drop with electric coilgun. Or just put the drop in metal launch casing. Maybe it would survive such a launch.
Hello Destin, I have a theory about subatomic particles and the Hadron collider, however I cannot get the information I need from CERN. Your experiment here might help me with my theory. Do you have the ability to measure the bullet speed and the speed of the shock wave traveling through the drop using your high speed footage. You know your exact fps rate of your camera and the distances involved with the bullet. Essentially, if it is possible in your very busy day could you forward me the bullet speed, bullet fragment speed and shock wave speed. I know that this is quite a bit to ask. All in the name of science! BTW, this might give me some answers about sub atomic particles and light speed. Thank you very much for your time.
Go to your local university
one of his other videos on prince rupert drops discusses the propagation speed of the shockwave
Curt Marler, M.A. .
Of course you've earned it! Thanks for bringing science closer to our lives! You do a great job and inspire us all!
It was amazing to see the bullet just shatter. I really enjoyed the shot where the bullet fragments fly out in a circle moving one direction, and the shock wave in the glass is moving in the other direction.
Imagine if SmarterEveryDay and DemolitionRanch made a video together.
Oh my gosh, Hydraulic press this please.
Never heard of this. Now I can't stop thinking about it ;)
Note how much faster the crack propagates in the glass in respect to the speed of the bullet. The frame by frame allows us to see that clearly. Amazing!
also unsuscribed and subscribed and range the bell... wow man still mind blown
You also da real MVP.
Yeah same here! You got my bell ring for sure. Good stuff man!
Why unsubscribe? That bell was already there. Did it by the way, but it seems suspicious.
unsubscribe.resubscribe.notification.done
You da real MVP
dat you Gordon Ramsay?
+
Destin, i have a question, at 5:29 when the bullet hits the drop, it start breaking from the back, before the wave has time to move through the drop (it eventually does and start breaking from the middle). but the breaking happens before the wave has time to move to the end, what causes this ?
I've made some back-of-the-envelope calculation and the breaking happens 0.031 ms after the bullet hits, so whatever caused the breaking to happened traveled at around 4 645 Km/h through the prince rupert's drop. Can it be the drop starting to move so fast that it hits the air strong enough to break ? since the tails is much more fragile at this end. I dont think it's a good explanation but since the wave doesn't have the time to travel all the way to the back, i dont know what caused it. any ideas ?
I am thinking this is still the compression wave. It is hard to know what the size of the drop is. So i am a little skeptical of the speed calculation that you did. However given that the previous video of a prince Rupert drop had failure fronts of much higher speeds I am willing to bet that a compression wave could have been possible for this too.
If it were the drop moving against the air I see two problems. First the air would just move out of the way. Secondly we would see the motion.
I agree with you, i dont have a good explanation for the breaking in the back. for the speed calculation i did a rough hestimate of 40cm of lenght for the drop.
also about your two argument, air would indeed move out of the way but if the speed is high enough it can act as a "wall" or a least a barrier strong enough to break the weak glass and two i agree but we dont see the motion since the drop breaks immediatly
Quick google search Says speed of sound in glass is ~14,000 Km/h. I'd expect it to be different in a Prince Rupert's drop than whatever this generic glass is, but compression waves should certainly be able to move that fast.
The speed of the sound inside solids are faster than in air, on google I found it's 3962 m/s in glass, considering yet that rupert's drop is over internal tension it may not be the exactly value but should be close enough. So it's more likely the curve we can see at this given time is just the drop acting as a spring absolving the kinetic energy from the bullet and the real shock wave is a pressure variation moving much faster than the bullet.
Bruno de Lima good point. I know the curve is the compression wave going through the glass, but as you see the wave progressing, you can see the drop shatter AHEAD of the wave. If you look closely, the wave hasn't even done half of the way to the tail.
Also the speed I calculated was in km/h (so 1290m/s) which is a very very VERY rough hestimate just to have a idea of the scale.
The images of the glass exploding are a great visual of how this blew my mind! Wow!
If you covered something in prince Rupert's drop, would it technically make it a one-shot bullet proof shield? There would still be the force, but it wouldn't be a direct point impact. Someone should try doing that, covering Ballistic Gel with prince ruperts and seeing what damage happens.
These drops are made by dropping liquid glass into water. I don't know how to make it drop around something and I doubt it's possible
How would you weave the drops so that they 1. Don't let the bullet through. 2. Spread the impact over a large enough area to actually save anything from the bullet. ?
Kyle Li the bullet still goes right through the glass even though it shatters in an odd pattern
Kyle Li I don't believe it would. The bullet still went through the glass it just wasn't the cause of the the glass breaking.
Ballistic Gel would boil with the heat of the molten glass.
Goes to show you how tough tempered glass can be
So the head librarian of the royal society of London handles 400 year old documents without gloves to protect the paper from the oil of his fingers? Interesting...
Astounding, that the shockwave coming back from the tail seems to move way faster than the flying bullets.
maybe if you get a longer drop, it will dissipate the shockwave before it breaks the tail?
1wsx10 I'd imagine it might just act like a whip, the shockwave speeding up down the length of the drop as the thickness decreases. It'd be very interesting to see how a shockwave travels over a long drop and compare the speed at the head vs. tail. Wow, your comment really has me thinking...
that is why i am not getting any updates
Can't wait for demolition ranch to make the 50 cal. Version of this.
I never thought possible for a bullet to shatter and not break a common glass. Thanks Destin, you bring awesome science to humanity!
What if you isolated or something the tail, so it is preventing it from shaking and braking? wouldn't that be almost invincible?
If there was a way to truly isolate the drop without vibration through the whole, perhaps this could work. Unfortunately, that's pretty much impossible. Similarly, even if you managed to melt off the tail without exploding the drop (extremely unlikely), the stresses within the drop would mean that without the tail, it would be considerably more fragile.
The hydroolic prees cannel to the rescue!
Try to break the tail of the prince ruperts and keep the ball and in theory it won't break from anything. (Like so he can see)
Uziel Hernandez the only way to make a tailless ruperts drop would be in zero-g...something you sorta don't want molten glass in.
Thats kind of true, but i rewatched a video from Techtastisch (a german youtube channel) and he accidentally made prince Rupert drops where de failure point(the part that makes it explode) actually was so far in the drop that you can't reach it. But he managed to break it with a vise. It would be interesting to se smarter every day's drops in a vise, and test if they would break too
You have earned it every single day with every single video. Thank you for existing.
Wait. The BULLET broke on impact?!
Is it possible to make a glass Drop without a tail, so it can be 100% undestructible?
I'm wondering the same thing.
Fausto Odilon Except Hydraulic Press defeats it.
A black hole would also RKO it no problem.
Indestructible
It would be really interesting to see what a very high powered gun could do to it, like a sniper rifle. Barrett 50 cal vs prince rupert's drop lol
I've been watching your videos 24/7 since i first found your channel last week and im positive ive learned more in that time frame than i ever did or would have in highschool. You sir, are the GOAT
This VS the hydralic press!!!
im curious if you coated the tail in rubber if it would reduce the back shock
or even have it laying on a peice of wood, i think that might help reduce vibrations
It would have to transfer the the energy causing the vibration into something, and if that would be wood, it would break when hitting the wood, instead of transfering energy. I think it would break with a rubber end too, inside the enclosed area. I can appreciate the idea, it's a good one, but I doubt it would work.
Ordinary Lestibourne how about puting the tail into water. Water can dampen the vibration and absorb the energy.
Yeah i was thinking same i think all he has to do, putting the drop on edge of table while tail is off table and i think it will ever break because of bullet, it will fly away and probably get broken because of hitting ground or a lot more of them will survive. Only one of them survived because it could loose rope before tail got too much pressure by rope and lost enough energy while flying away..
晓爷 Now that sounds like a good idea!
Someone should make a Rupert's Drop in zero gravity. So the Rupert's Drop would be a sphere (..right?) without a tail and has no weakness in any direction. If you shoot at this sphere I think no bullet has any chance. This would be awesome! :D
This same principle in design is found in the Mantis shrimp clubs... it's outstanding that the tension between the two interacting is what makes it so strong. Amazing!!