Glass Explosion at 343,000FPS! – The Slow Mo Guys

Glass Explosion at 343,000FPS! – The Slow Mo Guys

Good day. This is a Slow Mo Guys video involving Pyrex. You’ve got a couple of sizes here, and I noticed that on the warning label, it says: “Avoid sudden temperature changes, not for use on the stove top”. So, this is Slow Mo Guys, you know that we like to ignore all warning labels and do exactly what it says not to do. We just treat them like an instruction manual on how to destroy itself. Yeah, what would make a good Slow Mo Guys video? Ah, don’t do that — excellent! Apparently, I read that Pyrex in the US is different, in that it’s slightly crapper than European Pyrex. -It’s a lot crapper.
-Yeah. ‘Cause it’s made of something called…”soda-lime glass”? -Yeah, borosilicate –
-Borosilicate, which is what’s in the Europe. For this video, which will hopefully be glass cracking and splitting everywhere, we need a much higher frame rate than usual, so we’ve brought in the big guns, the 2511. Shoots way faster, I’ll start filming at 28,000 frames a second at 720p, and you know it’s doing a lot of work because it’s loud as heck. Looks a bit hot. That’s an understatement. It’s 38 degrees out here and I’m in a blue rubber and flame-proof suit, -It’s like I’m in a greenhouse.
-That’s what happens in June in Texas. -That’s disgusting. Is it not July? It’s July.
-It’s July. Yeah. So what we’re gonna do is get this blow torch and act like it’s a stove top, like a gas stove and heat up the Pyrex. Get some ice cold water and just “dip dip”, put a little bit in there, and hopefully it’ll just explode in my hand. -A little “dip dip phuoo”
-“Dip phuush” And we’ll film it on this bad boy. Lads and ladies, do not try this at home. -Ready?
-Yeah. So tell me when I’m in frame in that. Is that probably gonna be? That’s perfect there, but we can…we can readjust when you’re absolutely ready. Okay. I’m absolutely ready. Okay lemme get final foc. Okay, go for it. -Oaah! Jesus.
-You did it! -Flipping hell!
-You did it!! -God!
-Pretty good. -That’s insane.
-Yeah. -What frame rate is this at?
-28 thou. -28 thou?! That’s the starting point, is it? -Woah! Look at how fast that is!
-Flip! And that’s 28,000 frames a second, and it just went straight round, didn’t it? There was no messing around. That’s madness! I like how I’m holding it, and then I was suddenly holding nothing, so my hand just goes like, “woah”. That’s insane. It does actually explode sort of, doesn’t it? That is cool. Jesus! To stop the glass going everywhere in the garden, I decided to put a tarp on the ground, didn’t work. The glass was so hot that it just melted straight through and onto the grass anyway. Look at it! Look at all these holes! -I bet the glass didn’t even notice the tarp.
-No! They just landed in the grass and thought, “oh, what was that?” Completely pointless! That was great. We do need to get faster, so I’m gonna lower the res, Go way standard def with it, -That’ll give us…120,000 fps.
-Woah! -Good?
-Meaty. Okay, go. Woah. -Oh, it was different, completely.
-Was it? -Look.
-Oh wow. Look how slow the water’s falling. Just, nothing’s happening. Nothing’s happening. Well, what is happening is that the Pyrex is going, “oh god”! -Oh, woah! God, it’s so fast.
-Rapid. That is immensely cool. As you can see I’ve sacrificed my lab coat to cool the camera down. -Oh, that’s good of you.
-It’s rather hot. It’s rather hot out. I noticed in the first clip that all of this shattered pretty smoothly, all the lines, but the handle turned almost into dust, so what I want to do is go as fast as we can, really, so 170,000 at an acceptable resolution, on just this bit so we can hopefully see that happen, just super-duper extreme-o bonanza fast.
-Any more adjectives, or…? Ploopin. -171,000 and a half frames per second, pretty mental.
-That’s disgusting. Tell me if I’m out of frame again. Woah — push it! -What happened?
-It just went. -Without even doing it?
-Didn’t even touch it. -Really?
-Oh my god. -Were you framed up?
-Yeah. Haha! Who needs water? -That was ridiculous!
-Wondering if it was just the air cooling it down was enough to shatter it. That much? Fuggen me. What happened to the handle though? Did the handle go? -Oh, the handle didn’t even go!
-Didn’t it?
-No. Okay, so now we’re using the second one that partially smashed, and just focusing on the handle. -And this is being filmed at 343,000 frames per second.
-That is insane. -That is absolute madness.
-That’s a dank film rate. -This is over 13,000 times slower than you can see with your own face. Did it go? I think it did, you know? It’s still really hot, but look at the amount of detail, and the amount of cracks that are in that. It’s just completely — you can’t even see, can you? What’s amazing as well is the fact that it was attached to the rest of this, I just heated up this bit, and only this part cracked.
-Yeah. Only this part went, “no, not hot enough”, the rest of this was just like, “yeah I’m not involved in this”. -I’m cool enough.
-I’m cool enough, I’m fine. Okay, how’s this for a mental stat: the camera recorded for 5.1 seconds, and generated 19 and a half hours of footage. I am going to be sick! -That’s disgraceful.
-Almost a day of footage. -That’s vile.
– Do you think we should just stick it, like put it in our second channel as a whole video? -Just the whole video?
-Just the entire 19 hours. What, just put nothing in the description?! How many people do you think would actually watch it to the point, like where it does it? -Just searching through 19 hours of footage.
-Well I bet the break would be around 10 hours in probably. It’s so hard to mentally get your head around how fast that glass is moving, that I think we should do a comparison video of human reaction time, so at the exact same frame rate, I’m just gonna drop a little water in your eyeball, and we’ll be able to tell how quickly you react to that compared to the video we just shot of the handle breaking, yeah? -It’s a great idea, I mean, it’s just gonna be like looking at a picture.
-Yeah. -So I’m gonna go like this, I’m gonna go 3, 2, 1.
-Okay? -Then move your hand away.
-Yeah. 3-2-1 -Oh that was it.
-Oh god, right in the eye! -That was great!
-Oh, god! Direct hit on my eyeball. I think that’s going to look really cool. -Well that was immense. I’m always blown away, every time we film it, the speed that glass cracks. -Yeah.
-Phenomenally fast. -It’s crazy, we couldn’t do it without this camera, that’s for sure.
-Couldn’t do it on the old Flex. -What’s the science behind that, do you think?
-It’s called thermal shock, which is where sudden temperature fluctuation of the material causes a stress. So, on the glass, you’ve got the heat, wants to expand the glass, and the sudden cold wants to contract it, so you’ve got two opposites, and the glass just sort of goes, “argh — phsew!” Just blows up. Yep. That’s it. -Bad in commitment, the old glass, it’s just like, “I can’t handle it, I’m out.”
-I’m done. Hopefully, you enjoyed that video. That’s the fastest we’ve ever filmed so far, I’m sure one day we’ll exceed it. Feel free to follow us on Twitter, subscribe, subscribe to our second channel, we’ve got a lot of behind-the-scenes stuff there now. That should be some good viewing. -And buy some merch if you want.
-Sweaty t-shirts. -Sweaty t-shirts, we sell ones without sweat.
-Unless you want the sweat. Unless you want Dan’s sweat one. I want to go faster. It can’t be done! -It can’t be done.
-One day.
-No! Do you ever stop to think that, yeah you can, but should you?

Dereck Turner

100 thoughts on “Glass Explosion at 343,000FPS! – The Slow Mo Guys

  1. gamer know how 778 says:

    I played it in 0:25 x speed lol i win from u

  2. RoccoX95 says:

    I'd say that's a floopin'/10

  3. Falling Painter says:

    #saveDAN. Always doing the experiments

  4. Rick B says:

    Amazing camera and I’ll bet cheap too.😳😁👍👍

  5. lesio333 says:

    Very cool. Thanks

  6. Cath Mcgrigor says:

    It goes crystalline. That is so very beautiful to watch.

  7. Cath Mcgrigor says:

    Oh, Dan …. your poor eye.

  8. Nacho Diller says:

    like at ice age at Scrat xD

  9. Vlad Vl says:

    А где скорость лазера заснятая замедленно?

  10. Dennis Destro says:

    you need a much more FPS for slow down shatter of that handle.

  11. Gurpreet Singh says:

    What is this thing that break the glass

  12. regguy69 says:

    That handle shattered just like a Prince Rupert drop would. The speed is nothing short of amazing.

  13. CG Ryo says:


  14. Roci Stone says:

    New Pyrex is rubbish. The old Pyrex would have been better. The formulation of the glass was changed so that Pyrex could no longer be used to manufacture drugs, or so they say. I think it's just another example of cheap bean counters ruining a legendary product, like so many these days. BTW are you guys still popping corn while sitting right next to a hot plate full of oil while wearing short sleeves, and no eye protection?

  15. Amiel Singo says:

    "Its loud as HECK."

  16. Supanjibobu says:

    4:16 so this is where the memes from?

  17. CubeDefense Yt says:

    If only we got this FPS for our gaming

  18. Tbonyandsteak says:

    Now capture the speed of light

  19. Ian Limacher says:

    5.1 seconds = 19.5 hours of viedo? That is an insane framerate…

  20. grapes says:


  21. Jbox Gamer says:

    Im from texas in summer the temperature is around 100 where i live in texas also last time i saw snow was when i was 3 only have 4 memory's of snow not kidding

  22. ChatoBoss 416 says:

    For those of you who came from the longest 5 seconds

  23. William Martin says:

    I love how you wrapped up safe and sound and left the area around your heart exposed

  24. adam garratt says:

    “There’s no messing around” – a double unintentional pun. I like it! 😂

  25. 극한의 팝콘맨 says:


  26. Chris G. says:

    La explosión de un globo de agua mola mucho!

  27. Prinsipe Motions says:

    My eyes can only see 2gb ram

  28. Dame 213 says:

    I love these guys

  29. AJ to the M says:

    Starts at 3:27 thank me later

  30. Fun Overloaded says:

    See it in 0.25 playback
    Please mute the video😂

  31. Hugh Lamle says:


  32. kiro says:

    i wish i had that fps on any games

  33. Tanay Mody says:

    To see it slower I changed the playback speed

  34. Holeshot Hunter says:

    Pyrex, the stuff I grew up with, changes in the '60s. The formula changed, and the capability to resist thermal shock was lost. It used to be good, strone (boron?) glass. Now it's just glass

  35. Nanny Crumbles says:


  36. Harsh Sharma says:

    If you're not watching at 2x slower, you're doing it wrong

  37. Cool Corner says:

    Glass does crack at over 3000 miles per hour, so….

  38. Jordan Tillman says:

    you guys are slow yet you play like infinite fps

  39. Small World says:

    Still faster than INTERNET EXPLORER

  40. Mao Le says:

    Anh hai, ạnh ba ơi !… hôm nào làm thí nghiệm với trái lựu đạn được không anh? Hay là quay lại cảnh phóng điện cũng được…

  41. #MARKBEN says:

    Тот кто оценит и напишет комент под моим видео про чит, на того я подпишусь, все честно я сразу подпишусь как только увижу комент!)

  42. Lance Washington says:

    Self detonates like I seen what happened to the other

  43. lodin power says:

    05:43 its freezing lol

  44. Andrew Scrimgeour says:

    How to make a slow mo guys video slower step 1: put the playback speed to 0.25

    That’s it

  45. S F says:

    So the cracks are propagating at, like, 10 MILES per second?

  46. My Tech says:

    Really Awsome video

  47. Felipe Tolentino says:

    Assuming the handle is about 10cm and calculating the average speed, the ridiculous speed the cracks spread is around 3461km / h or 2150mph

  48. Anonymous says:

    10 years later..

    Glass explosion at 72747283828FPS in 93482K

  49. Random 1 says:

    At 3:48 I had headphones in and that scared me so much🤪

  50. Preston Danger says:

    38 degrees?! it doesn't even look cold!

  51. Abdurrahman Son says:

    I guess the way the crack goes is about 13 cm (if I'm incoorect please say the turth) 0,13 m in 0,000104 s. the speed of the crack is 1250 m/s or 4500 km/h.

  52. KidJigguh says:

    What’s faster? Lightening or glass cracking?

  53. Kresimir Knezovic says:

    Awesome video!!! Good choise of music

  54. thefatgamer says:


  55. Diệu Linh Nguyễn Thị says:

    Can you tell me what solution that could cause glass like that, thank you so much for blessing you.

  56. Diệu Linh Nguyễn Thị says:

    hot and cold outside, can you use another solution? Many thanks very helpful videos.

  57. Alex K says:

    5:39 the part in "The longest 5 seconds on youtube"

  58. Erik Paaske says:


  59. Zidan Zameer says:

    Why does dan always get tortured

  60. The Jakob Hallett Nerve Centre says:

    Came for the meme, stayed for the slo mo

  61. Christ Tajerian says:

    343,000 FPS:…
    YouTube x0.25 speed: “Allow me to introduce myself.”

  62. Lucky Terrarian says:

    f l o o p i n

  63. Penguin Fan says:

    3:48 5:43

  64. Renuka Prasad.K.K says:

    Can you make a bullet proof glass cracking in slow motion?

  65. Battledwarf says:

    One day we’ll film faster. 2019 film the speed of light.

  66. Jhun Fajardo says:

    Hi I’m romnick Fajardo from philippines how about try it to a bullet proof glass

  67. Merchant Ivory says:

    Movie Mistake: 2:35 His glove change from blue to brown….magic

  68. Anthony Tetreau says:

    So I just watched this for the first time. I did a quick calculation, assuming the handle was 4 inches long and the speed came out to about mach 2.85….

  69. Block G says:

    My favourite slo mo guys video 100%

  70. Manambina Aloe Vera Kktk 2009 says:

    It's an acid?

  71. Rob Smith says:

    You guys!
    How much is that camera or I imagine you've upgraded by now?

  72. Larry Scott says:

    Almost like a Prince Rupert glass drop.

  73. The Chosen Gear says:

    Nobody thought that the extremely hot glass just might light the grass/tarp on fire?

  74. Chogak says:

    that eyeball shot tho

  75. disabeast Gaming says:

    Does cracking glass exceed the speed of light or sound?

  76. lia says:

    Imagine 343,000 FPS on mine craft OHHHHHH my god I’d love it

  77. squishy the pig ochoa says:

    he said its 38 degrees at 1:04 and thats what its at in texas and hes not entirely wrong because here in san antonio texas its on average 102 degrees

  78. Shawn Jung says:

    f L o O p I n

  79. Johnny says:


  80. Addison Evans says:

    Can someone explain to me what Gav means by that's the fastest they've filmed? I would've thought it would be the slowest…
    Any help is much appreciated

  81. SanicStudios says:

    Super duper extremo bonanza fast…

    any more adjectives?


  82. m9a2rocket says:

    How much does that camera cost

  83. Doug Johnson says:

    F L O O P I N ‘

  84. XD HXPNO says:

    28 Thou

  85. Eduardo PAZMIÑO VELASTEGUI says:

    Have a pc gamer be like:

  86. Jakob Gunnarsson says:

    I would love to see water dropped into boiling oil, makes for a good and interesting explosion!

  87. PhotoGeorge says:

    What is the fastest frame rate theoretically possible? Does anybody know the answer to this and WHY it is so?


    Light is the fastest thing in the world? Or this glass break??

  89. Sally Carter says:


  90. Lord Bloodraven says:

    To keep glass shards out of your lawn, do it over a plastic kiddie pool filled with water.
    The glass shards will water cool by the time they make contact with the plastic.

  91. Luckytfm_ says:

    You re welcome

  92. It’s That Fish Dude says:


  93. Geert Delmulle says:

    That handle reminded me of a prince Rupert drop…

  94. Salem Andreus says:

    Slow Mo Guys, you ever see the slow motion shattering of a prince rupert's drop? There are some vids on youtube.

  95. BmnGameBoy says:

    Ps4: makes graphics (understandable). Camera: films with slowdown
    Noise levels wut (my ps4 pro is very quiet)

  96. Timo says:

    This is so awesome!!

  97. The Young Kings says:

    5:42 is just so mmmm it looks so nice

  98. Luis MX says:

    Should upload the videos in 60fps

  99. Lauren Vaughn says:

    4:28 is… is that a hello kitty band aid?

  100. DeadAtrocity says:

    Extremely hot glass gets very cold suddenly

    Glass: ight imma head out

Leave a Reply

Your email address will not be published. Required fields are marked *