Catching an Explosion in Water at 5 Million FPS - The Slow Mo Guys 

That 5M frames shot was absolutely incredible. This is really something where you need exactly these kinds of cameras to see all the detail.

Did we mention already how glad we are that Dan is back at it with his cool weapons and explosives expertise? We love you Dan..

The inversion of the 5 million fps shot is absolutely insane. That’s actually one of the coolest things i’ve seen on youtube

I love that Dan just knows all these things. It's refreshing to hear someone lay down so much knowledge I don't know about

That 5M FPS shot was phenomenal…wow, this may be footage never seen before. What a sick video

That 100k water shot was actually incredible. The cavitation wave behind the shockwave, the black tendril climbing down the core, and the thick cracks chasing behind

I’d argue that the 5M shot is one of their best shots of all time. Even the fastest shots they’ve had didn’t show much. This shows everything, including exactly how the explosive worked. Fantastic

The prediction of 15:14 is really showing that Dan is experienced. He's enough of an expert to admit what he doesn't know.

That cone inversion is one of the coolest things I've ever seen, no joke. I've known about how the physics of shaped charges worked in detail for many years but there is no substitute for really seeing it happen!

Always love videos with explosives as Dan gets to flex the knowledge he learned in the army. Really cool episode.

SlowMoGuys still nailing it every video ! These guys have been consistently on point for so many years now !

Sometimes we forget Dan was literally a military munitions expert... I'm so glad he was!

Hey, it's insane to realize that the speed of light is 3×10^8 m/s, or 30 cm/ns, meaning that with the 5 million FPS footing you could start to see the effects of the speed of light limit. You could actually build something to observe this effect. For example an array of mirrors at different positions, all reflecting the image of a unique explosive charge toward the camera. The image of the explosion would then appear at different times in the different mirrors due to the limit of the speed of light.

I love how you guys know exactly what we want. Never had to rewind cuz u guys did it for us like 10 times that was perfect.

The fluid dynamics of a shaped charge I can visualized in my head, but seeing it is truly amazing

You know... RU-vid has it's faults and flaws, but I'm really glad that they provide a platform for people like you guys to shine. You guys rock! 💙

it's easy to forget Dan's a Marine with lethal combat skills and knowledge cause he's so chill

These aren't just The Slo Mo Guys, they are the KINGS of the Slo Mo Guys! Impressive footage to say the least!

This channel has to be the #1 for satisfaction and the desire to want more in one sitting. Love it.

Glad they let you boys back! More mental slow-mo for us! Not to mention what a pleasure it is to watch Dan show his expertise

Interesting note: The SPACE between impact layers has been proven to be extremely effective in stopping stupidly fast impacts, as the space allows the shrapnel and debris to spread, effectively absorbing the kinetic energy of the projectile with each additional layer. This is, in fact, so effective in impact protection that a variant of this idea is used to stop micrometeorites from penetrating spaceships, something known as a Whipple Shield.

I cannot get enough of this shimadzu camera footage. I'm blown away. This is a whole new level for you guys.

The 5 million fps shot is stunning. You both should be very proud

It's hilarious following Gavin throught the years doing and saying so many stupid things, then seeing him being a complete expert in operating like $100k advanced slow motion cameras...and then it's back with him using a rock to hammer a screwdriver into a plank...lmao

As a former Army Combat Engineer, I too was in awe at these shaped charge slo-mos, especially capturing the copper inversion. You guys are truly what 4KTV was made for! (And yes, Shout out to Colorado School of Mines, they are the best of the best!)

This was epic to watch. The sound editing is on point and the low rumble, my gosh...no words do it justice

Your guys videos are just amazing every time a new one comes out and I catch it, I do what I call “going on a binge with Gavin and Dan”. I pour myself a big glass of spiced rum on the rocks and set myself down in front of my screen and watch an hour, two, or three of your videos, just happy as a baby mothers arms.

These guys go through great lengths to entertain us, much appreciated!

I love how Dan gets excited talking about the explosives as Gav does talking about FPS. haha. love these videos.

I really never thought I'd think explosions were this beautiful, but they really are

that water tube blowing up looked like a piece of art. Beautiful.

I absolutely love when Dan gets to be the expert in a situation, he gets so excited and giddy but nerdy and informative

I ran out of ideas for slow mo vids years ago. YEARS ago. How y'all are STILL coming up with awesome stuff to film in slow mo is a testament to how amazing you both are and how great this channel is. One of the few channels I'll watch anything that shows up.

14:25 You've just caught the Big Bang, well done guys.

Watching explosions at such a slow speed is amazing, and it just show how much power the shaped charges actually have.

The inversion of that shaped charge is one of the coolest things I've seen this year. Utterly incredible stuff.

I love videos like this where Dan also gets to flex his expertise, makes it feel a lot like Mythbusters where you have 2 similar but different experts combining their knowledge resulting in a absolutely terrific product

The 5M shot is my new favourite from you guys. Absolutely amazing!

Just dropping in to say I love your videos. Very informative and genuinely interesting. The high standard has not been lost despite huge success. Well done lads, and to all involved

at 5 million fps you can visualize the light moving at about 60mts per frame. you can make a video of a laser shot through a thin smoke on a field and actually se the laser beam develop. impressive. (and if you put the camera behing the laser pointer the effect would be amplified because the light needs to bounce on the smoke particles before coming back.)

I absolutely love how Gavin is all about how aesthetic a shot is. He notices the intracacies of objects within a shot. I love Dans' expertise in the more, 😏 "explody things". The humor and dedication this channel has is top tier. Love ya SloMo

That footage was absolutely mind blowing!

Wow that 5m shot is incredible

videos like THESE are the reason cable television is literally archaic technology these days.... absolutely phenomenal content, all for free.... you guys really are the best on the platform in terms of consistent/quality entertainment!

If anyone's curious about the 25 million Gs of acceleration explained at 6:50, this is how you calculate it. Dan explains that the copper jet accelerates to 10 km/s in about 40 microseconds - 40 millionths of a second - so the acceleration over this time is (velocity_delta/time_delta)/g where g is the gravity of Earth, or ~9.80665 m/(s²). In SI units 10 km/s is 10,000 m/s so the value is ((10,000 - 0) / (40 * 1e-6 - 0)) / 9.80655. This is approximately 25,492,905 or ~25.5 million Gs of acceleration.

that water shot was epic, the end of it looked like the water compressed to the point of a singularity at the bottom of the tube as the charge kept pushing pressure into the tube. amazing shot.

I could watch shape charges blow things up in slow motion all day

Once again, so glad you two are back together. I really enjoy when you guys blow things up and Dan gets to talk about his expertise. It fun to see how excited he gets. And Gav the 5,000,000 fps shot was incredible. Thanks guys!

9:36, Those are Fiestaware plates aren't they?

This is THE BEST video you guys have done yet! Just incredible. Thank you guys!

Wild idea: Simultaneously fire two shaped charges that are pointing towards each other and film the impact!

Honestly love how much time and effort gavin and Dan put into this channel despite living a world away and having full time jobs ❤️

I love watching these destructive slowmo shots. I would love to see a realistic miniature city with concrete and mini-rebar and all and see how a shape charge equivalent to a large bomb detonating somewhere in the fake city and see how the shock waves and all interact with the buildings and such. It couldnt be modeled out of any real cities of course but it is interesting science when no one is in any danger.

These videos are amazing, the amount of data that can be used to better understand the physics behind the charges and how to minimize wasted energy while possibly improving the charges themselves. I'm in awe of how much information you can actually see, even from the "not as good" clips there's still SO much information and data. Not to mention pure beauty in it. No wonder they let you guys back, this is some top tier stuff. They can literally reverse the videos frame by frame, reconstruct the explosions in software, and use that data to better reinforce the points of the charges that wasted energy, while also being able to improve the defense against such charges. Absolutely astounding data.

Thx alot guy's. This(footage, and all of the others) is, as you say, mind blowing! Keep it going, please!

Gav's beard is a thing of beauty. It is great how Dan, while being goofy and funny, takes the actual detonation process so seriously.

As an EOD technician (and a full-time nerd) who uses shaped charges all the time, the videos you guys do with explosives are my all-time favorite

16:55 pause when the shockwave is roughly at 2/3rds of the way down, that's an album cover right there wow!

hands down my favorite video yall have done. shows off both of your strong suits and that first 5 mil fps shaped charge footage was mental

Love the beard!

The B&W footage was outstanding.

Your footage is getting better and better! 14:00 is most impressive!

17:45 look at the corkscrew of shrapnel shredding through the water right next to the “smoke monster”… that’s so cool!

The detcord video is still one of my favorite videos you guys have done. Ready for part 2. >=3

It's crazy that it's still so fast even at 1,000,000fps.

That was absolutly incredible! The shot where you see right into the mouth of the shaped charge. Ive never seen anything like it in such details.

My God. I've been watching you guys for years, but this has got to be the most insanely cool video you've done. One of the most interesting videos I've seen in my life. Just amazing.

Those tube shots are probably the most amazing slow mo I've ever seen in my life thank you guys. Way to go on another terrific episode

One thing that's worth noting is Dan definitely knows what he's talking about with military applications and explosives, since he served in the British Army as an explosives specialist (I think it's officially labeled EOD???), and if I'm not mistaken he made Corporal.

When Gav said “thats the cream”. In my opinion what they have there is the holy grail of slow motion so far that shot was breathtaking

It's great to see you guys working together, you compliment each other perfectly in this show.

This video gives me mythbusters vibes and I’m here for it

Always love a video where Dan gets to show his expertise

Wow! That was amazing! Thanks!😊

Truly AWESOME Footage! Thank you!

I was like oh no, Dan is gone...but then he showed up and my day got better

Seeing the 5-mil frame shot of the cone inversion was like watching a volcano going off. Absolutely beautiful! And that's just a measly little shaped charge! I imagine seeing the avalancher getting detonated underwater would make for some rather interesting footage.

Not gonna lie this vid is one of your guys' best, it feels like the perfect mix of lads having fun and informative and awesome visuals that just hook me in!

Honestly I love the way this channel periodically finds it's way into my recommended, just as I'm about to forget it exists. Keep it up!

The part that fascinated me most happened with the "plate plates". With each of the first few plates there clearly is a reduction of the pace at which the copper is progressing through the ceramic. But, as each plate is penetrated, pressure captured in the shock wave progressing from the previous penetration re-accelerates the material. That was completely unintuitive. It was as though a kind of shock tunnel had been set up, contained only by the air around the column of plasma and copper.

For the half second where Dan wasn't present in the intro, I thought "Awwww Dan's gone again" I was much sadder than I'd predicted I'd be

It's like watching a comet punching through an atmosphere.

Watched you guys for over 10 years. Always entertaining 🙌 ‘safe’ to say I’ll be watching you for a long time yet 👊

loved seeing Gav's brain break when Dan was talking about the speed of the detonators at 6:53 right after he was casually dropping 1mill plus fps numbers

At 5 million frames per second, light travels about 60 meters per frame. That's close to being able to be seen if you could get a light source that's bright enough and turns on quickly enough. Maybe a very bright high explosive?

Absolutely stunning all around.

I would 100% support a "Slo Mo Guys recreate old videos with the better cameras that now exist" series. So much of what you did years ago I want to see with the higher frame rates you now have access to.

Ever since that original video I have been so fascinated by shaped charges, I had heard of HEAT weapons and stuff but I had no idea the kind of physics that is used in the warhead to penetrate armour, then when Dan gave his explanation of what a shaped charge is, talking about the inverse jet etc I found it really interesting. Like I say, since then I've been thinking of what if the slow mo guys made a video about shaped charges, being able to see the jet form and penetrate things, so to see this video was insane. Seriously that 5 million FPS shot was mind blowing, that has to be never seen before footage of a shaped charge. I've seen computer simulations of them in ansys and things like that, but to see actual footage is crazy. What a treat! I love that this video shows how effective spaced armour is on tanks, how it can set off the charge with too much standoff or disperse the jet through layers of armour. When you consider it, makes sense why javelin warheads have a two stage shaped charge system to make absolutely sure that the main big one can do its job. Thank you Gav & Dan!

I love how much footage you've accumulated at this point to where you can just go "remember how strong steel is?" and then cut to a video you took of a bullet destroying itself on a steel ball. incredible.

Thank you for doing more explosions!

This stuff is just mind-boggling. You guy just earned a sub from me.

2 vids in under 2 weeks???

That footage of the "smoke monster" going through the water may be my favourite footage you've ever captured.

You‘re still surprising me… amazing! Thx!

These guys really do have the coolest job out there.

This video highlights what I like most about you two and this channel: unfiltered, raw curiosity. And we get to ride along. It's so great!

Some of the most beautiful footage ever seen by mankind by the masters of their craft!!! Enjoyed every bit of it!

Dan looks in shape, love him!

one of the best vids no second thinking or doubts about it

I'm gonna say it. Best channel on RU-vid.