Spinning a Laserdisc to Shrapnel at 80,000fps - The Slow Mo Guys
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- Опубликовано: 16 янв 2024
- Gav and Dan find out how fast a laserdisc can spin until the quality of the movie gets affected by it flying off the plastic. Don't try this at home!
Thanks to BetterHelp for sponsoring this video - betterhelp.com/slowmo
Instagram - / theslowmoguys
Filmed on Phantom TMX 7510
Spinning a Laserdisc to Shrapnel at 80,000fps - The Slow Mo Guys 
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I bought a bundle of 10 on eBay for $30 and told the guy to send me the 10 least wanted/hardest to sell/most beat up discs in his eBay store. This was his selection.
I'm surprised somebody has enough that they can even sell them in a bundle
Money well spent. Particularly as it isn't mine.
You guys never disappoint when it comes to turning ordinary household items into lethal weapons.
Big thanks, ebay guy, for sending them in. 3 bucks a piece is quite a good price for a potential delaminated watermelon knife.
Plenty of bundles/lots on Ebay. People still enjoy watching Laserdisc. :) @@KageZangetsuOnXBL
I love how "destructive power on a melon" is a justifiable unit of measurement 😂
Eyyyy, Kevin, nice to see you here!
Melons are a measurement of destructive power, the same way bananas are a measurement of length/size
hey lol didnt know you were a slomo guys fan
its because melons are a decent representation of a human skull.
If it goes through a water melon it can probably go through your head.
SMG and JYD collab? Slow mo footage of bean field races?
I love these classic videos redone
👍
Wow
Good video
good
I wonder if a scientist could make a funky soundtrack out of the jagged edge desk like you take split s9 that’s one tune then you do a jazzie bridge to the next crack int the record
9:13 the trajectory changing mid flight due to inertia is some magical stuff to witness
Also at 3:21 absolutely mind bending
Wow thanks for this comment, I didn't pay enough attention to see that! That was amazing!
Air resistance helps, too.
@@dark14life What do you mean?
The phrase "trajectory changing mid flight due to inertia" makes no physical sense. Are you referring to illusion of the pieces appearing to curve in midair?
"Let's armor it up, shall we?"
Next cut - extra plywood boards are just casually leaning against the original plywood structure.
Me: Yup, that checks out 😂
Basically buying a nightstand but instead of unboxing and assembling, just put stuff on the box! 🤣🤣🤣🤣🤣
They didn't reinforce the carpet though 😅
I love the rotating footage at 4:00, you can see how the pieces break off and keep spinning at the same rate, while traveling on a course sort of tangential to the original disc's rotation. Incredible!
i'm watching in VR and my whole world was turning upside down lol
For some reason it gave me like… mild vertigo? I don’t know lol. It was a strange experience. Very cool, but I had to look away for a second.
There goes your favorite anime or '80s action film, off into the oblivion at thousands of RPM and hundreds of mph or km/h. :) Just kidding, but if I am not mistaken, anime* was getting big in the 1990s, such as Akira and YuYu Hakusho (The Ghost Files), and those anime were made before DVDs took off by the 21st century. Imagine standing near the disc, that would scare me.
Would love to know the physics of why the disc parts spin at the same rate in the air after being released. Seems to be stored momentum in the fragments.
*Not a big fan of most anime here cos a lot of anime in the 2020s has too much blood, never-ending fights and raunchiness, but Hunter X Hunter, most Ghibli stuff, One Piece, Weathering with You, Cowboy Bebop, Azumanga Daioh and Serial Experiments Lain are all good. Gonna try YuYu next. Glad that a friend introduced me to HxH in 2021, or else, anime would have been a lost cause, just like the humble LaserDisc.
This is Gav & Dan working with the cutting edge of movie media for sure
Newton's laws of motion in action.
the amount of times the slowdown shows multiple pieces just *CUT* through the wood like butter is terrifying. Like it wasn't even an obstacle.
My uncle was in construction for many years and fond of pointing out that wood is actually weaker than drywall (for the same thickness).
You can see the grain of the wood in the vid is in line with plane of the disk, which means it's even easier to cut than paper (aka cardboard) because when you go with the grain you can go between fibers (think cutting a steak with vs. against the grain) vs. cardboard's random fiber orientation and multiple layers (ask a sewing enthusiast what's the worst thing to dull a pair of scissors, it's not fabric, it's paper) Honestly a congregated box (2 walls) would have been more effective to stop the chunks.
I thought the first layer was plywood....i know the second was, didnt seem to make much difference.....impressive weapon if you could just point it all the right way....🤣
Dan's "Oh dear" when the shrapnel went through the crate cracked me up. So much emotion in only two words
let's not sleep on gav's "oh dear" at 9:42
Over the years, I've found myself watching Slo Mo Guys videos more for the Gav and Dan banter rather than the actual slo-mo. It's oddly comforting to come back to Slo Mo Guys across the decades and find the same two charming chaps.
The slo-mo is sick too, though.
Yeah, you can hear their friendship especially with the banter of old mates
Came for the slow mo, stayed for the guys
They haven’t been around for decades. RUclips hasn’t even been around for decades.
Have been with them since 2013 or so. :) Good times.
@@YogSothRUclips reaches its' nineteenth year this February. So one more year and it will have been around for decades.
What I love about Slo Mo Guys is that they get to the point. Other channels, even huge well known channels in the same genre, will make a 40 minute video and only put the thumbnail experiment in the last 3 minutes. Meanwhile here we get a couple minutes of intro and then most of the video is actual content. Well done on not folding to greed and padding it out too much even after all these years
Agreed. even there is a decent explanation to what we will witness or what the setup is, they make it interesting and seem appropriate for the video, not padding, not egging us on to watch until the end of the video to see what we want to see in the video
the sponsor still annoys me, though. it should be placed at the very end, after everything.
@@matthewbarabas3052 they gotta make money tho, they would get much less money if they put it at the end
i agree. this is partially because Gav is the editor and just wants to get the video done asap.
@@matthewbarabas3052 SponsorBlock extension
Very cool! I mean, forget land-mines. You could booby-trap a place with a bunch of spinning laser-discs and nobody would want to go anywhere near it!
Laserdiscs, the future of home security
Just have to sacrifice a Dyson motor every time.
They should slomo when someone retrobrigths an old computer 🤓
@@josefsieffen18For having something more lethal than a ninja shuriken...
It could be said that there they have a... Lethal Weapon.
(Ok, that film was released in 1987, so perhaps it had a laserdisc version)
In the 1980's working for a pump/compressor manufacturer, we would spin destruct our die-cast steel impellers. The smooth perfect surfaces of these impellers came back with what resembles crumbled tin foil. These were spun at 140,000+ RPM till destructed. One lasted to 180,000 RPM. The hi-strength die-cast metal went to a plasticized state, quite amazing. One compressor we designed would run at 120,000 RPM on its 4th stage. I got to hand draft the design for these as it was before commercial CAD systems.
Most Laserdiscs were double-sided - at some point in the movie, you'd have to take the disc out and flip it - which explains the splitting. There are actually two layers of film sandwiched between two plastic plates, if I recall my outdated media formats correctly.
Yeah. Early DVDs were often double-sided too.
I still have a couple with 4:3 one side and 16:9/10 the other.
@@lucid__enigma When you'd buy TV season sets they used to do two sided as well.
@@lucid__enigma Weren't most PS2 DVDs double sided as well?
Air force one DVD is double face also. You had to swap in the middle of the movie. DVD with embedded pee break
@@lucid__enigmayeah I still have a T2 judgement day dvd with side 16:9 ans the other 4:3
the way that Laserdisc exploded and embedded itself into the wood reminded me of how an airbag exploded in the microwave and shrapnel managed to hit the door the guys were hiding behind all those years ago.
Wow, what a throw back. I loved the "Is It A Good Idea To Microwave This?" guys!
Classic "Is it a good idea to microwave this?" episode and also internet history
@@FoxerTails That and "Will It Blend?"
@@Xenuos My kingdom for another "Will it Blend?" episode.
Oh my god, the airbag ep was an all time classic. Had me laughing almost to the point of tears
Very cool! The discs weren't very well centred though, which I think is why the whole set up was wobbling so much. The discs might have held together up to a much higher speed if they'd been better balanced. Time for a 3D-printed hub mount!
Dan saying he's never seen a Laserdisc before makes me feel super old. They were a lot more popular than most people realize, especially in Japan when most of the best anime came out on Laserdisc in the 80's and 90's!
I think they were a lot less popular than you realise lmao, why else would most people not even know what they are, let alone have actually seen one?
They were much more popular in SE Asia than US. In Europe, they were nearly non-existent.
As someone who grew up with laserdiscs instead of VHSs, it is so nice whenever somebody acknowledges them
I have never seen one before, didn’t even know they existed before this video!
Yeah! They really became a laser in this video 😂
.
@@SKOMPASI thought they only existed in Regular Show lmao
yeah... I also have a dad who was attracted to the "wrong" tech XD
The disc shattering whilst spinning at 220mph and jamming into the walls reminds me of that image of tornado damage featuring a record disc lodged halfway in a tree
There's me thinking that the force of a tornado does the damage to forests but really, it's someone's laserdisc collection which it picked up along the way
Real... @@kungfutuber
Fun fact. A tornado is powerful enough to send blades of grass into concrete.
@@D.H.1082 I've dedicated most my life to research into tornadoes.
That's not true. 💀
@@RainbowDoesStuff Well, its your word against my brother's, who actually witnessed it.
I appreciate that you tried the VHS. I still want to see it spun into destruction somehow. Those laser disc shards are something else. Goddamn.
I love how after all these years, Dan never got a new labcoat
I didn't see the disk shard lodged in the wood at first, so when Dan casually shows it broken through the side of the wood, I lost it.
Yeah, some of those shards treated the plywood as if it was *cardboard*!
Been in construction for years. I'm amazed how the plastic went through the plywood like butter.
This is why the yell at idiots to Evacuate Florida for the Storms. Straw will do that to a person.
any mass penetrates at a high enough velocity so I’ve been told
ever heard of Eₖ = ½mv² ? velocity is the key here, the more velocity the more more kinetic energy. this is also why even small millimeter-scale debris can damage metallic surfaces in space.
@@farhanrejwan I'm not skeptical, just fascinated.
I replayed it so many times to be sure of what I saw, and then subconsciously became convinced it was cardboard, even when I knew it was plywood from earlier on in the video
OMG OMG! Finally! I've been posting on videos of people spinning CDs up until they explode to do it with a Laserdisc for years! Finally somebody did it! Thank you!
Can we get a supercut of every one of Dan's reactions ever, please?
The part where Dan's head just pops up from behind the table is just gold, as per usual.
Man, it would've been hilarious to see a VHS tape being spin around on that motor
Also pretty easy to do. They just need to drill a tiny hole through the center and do it like the disks.
@@Blasted2Oblivion Slightly complicated since the tape spool insite the casette will need to be balanced between both sides. Can't do it with a fully rewound tape without causing some heavy vibrations
@@ScourgeOTG Good point. Shouldn't be hard to adjust for if you know how long the tape is but still something you spotted that I missed.
@@ScourgeOTGYou would need to find the centre of gravity but that is possible. Balance along any line on an edge of about 3 mm. Hold it down to mark the edge of the VHS at each side. Turn about 90 degrees and redo to repeat. Draw the intersecting lines and it will be there. I boldly predict it will self destruct at lower speeds.
Did you watch to the end?
9:33 Where it just cuts straight through the plywood like butter is crazy
The way the Watermelon reacted reminded me of those scenes in Anime, where we'll see Samarai cut something, and for the object to split after the Katana has been sheathed, really cool.
Those speed labels on the disk at 4:30 are really cool, would be nice if you could put stuff like this in some of the footage in future videos to have comparable values for everything you guys do
It would be fun if you uploaded some 10 hour versions of some of the most amazing shots you've ever taken. It would be fun to put them on the screen for a party, synced up for the most exciting moment to happen at, say, midnight. The whole night you could look at this almost still image on your screen like it was art, and know what was coming. Could be cool!
there are two videos similar to that on the second channel
The longest 5 seconds on RUclips. ruclips.net/video/pudhhUEtnCI/видео.html which is 19 hours long. And
Falling into a pool for an hour ruclips.net/video/IdTKlMtyELM/видео.html
This would be so cool fr
@@TheMainelson Thanks for sharing! I was looking through their videos on their main channel to see if there was anything and didn't find it. Awesome!
@@TheMainelson Also a third, Dan getting hit in the head with a football for half an hour 😄
The refracted colors shifting when the crack forms is super satisfying. Good lord that thing is deadly though. Excellent video as usual!
Hands down one of the best channels on RUclips...Insane stuff you guys show us every month.
8:10 hahahahahaha omg. That sudden cut to a random unexpected watermelon hanging from a string is VINTAGE Slow Mo Guys, never change 😂❤
9:32 that trajectory is just insane. Due to the shard spinning on a different axis than it's new center of gravity it's sort of wavy. Just surreal
I noticed that as well, its wild how it shifts its trajectory like that. I can't tell if its spin is making it fly up and then down or if its just an illusion from its shape.
For the first half or so of the path, it's moving in the expected straight line, while spinning around the centre of mass. However, it doesn't just get /close/ to the melon, it actually touches it, and appears to make two separate and shallow slices into the rind. Both of these cuts provide pivot forces that an upward change to the path traced by the COM. And about half way through the second cut, the shard contacts the plywood wall and quickly loses all vertical motion as it exits the frame.
@9:15 I love how the melon cutting piece looks like it flies up and down because of the off center of balance
Glad you guys are safe, those laserdisc shards are no joke. I was shocked that one piece on the first go went all the way through the wood.
2:50 - FWIW, a group of us found that neither plywood nor concrete were good barriers for copper shrapnel when we built a coin shrinker… but about 5cm (2 layers of 1-inch thick) HDPE did wonders. (The inner layer was somewhat sacrificial and needed to be replaced occasionally, but lasted a good while in between.)
Maybe that’s useful information for y’all? :)
I love how this test (d)evolves into a fabulous yet ineffecient way to cut fruit. Never change, guys!
So much has changed over the years...
But not Dan's "Ouhhhh!" Evertime something gets destroyed lol
Even the episodes I think are not gonna be that interesting, always turn out amazing to watch 😂
Guys, before paying anything to better help you should know that they will share your sensitive data with third parties like Facebook.
They also got in trouble with the FTC and had to pay a massive finef or it. They are not a good company.
And their "clinicians" and "therapists" often aren't even actually certified or licensed.
Fun Fact 2:37 the last person to be guillotined was back in 1977, the laser disc was still very prominent then so the odds of being guillotined by a laser disc was non-zero.
I believe laserdisc entered the market in 78.
@@duotronicnone4572 Good to know, although optical video recording technology was invented in 1963 and patented in 1970, it may not have been called laserdisc but all semantic differences aside, the point still stands a transparent optical disc ''could'' have been used as a guillotined.
i always impressed by the chemistry between you two. hope everyone gets a friend like that. who you can be yourself around without trying to be someone else to impress..☺️☺️
I love these classic videos redone. Been watching you guys for years much love
The colours on the discs are amazing but maybe you guys could try forcing the discs to fracture in a certain way, by scoring the discs, with a knife, in different patterns, could be interesting to see with all those colours
Try using a flammable gas in a smoke ring maker and shoot a ring toward a flame or spark. Might be cool to see a gas that is visible like a mist vs a gas that is not visible.
Imagine a bunch of soldiers attacking with spinning laser disks atop their helmets. And if anyone gets near them, they up the speed, sending out disk shrapnel into their adversaries. Sounds practical to me.
I've been following this channel since it started. Thanks for staying true to yourselves lads.
My parents had LaserDiscs when I was growing up. One major problem these things suffered from in their old age was delamination. It wasn't typically so violent (mostly just caused problems with playback), but it does not surprise me to see it happening when they're truly stressed.
For me the favorite part is the shards falling then lifting up instead, the movement is just so weird and interesting to watch. It is like they are clawing their way back up from the tiniest friction they find.
I have a video idea if youre interested: recently saw a demonstration where a guy put a piece of cotton into a clear piston apparatus, when he pressed down on the piston (thus conpressing the air in the chamber holding the cotton) this created so much heat in the chamber that the cotton ignited causing the piston to shoot back up. Would be cool to see that slowed down :)
Didn’t expect to involuntarily smile from ear to ear when he stabilized the spin around the label on the 2nd one.
Spinning things really fast while recording it in Slo-Mo.
My favourite form of entertainment next to things blowing up in Slo-Mo and of course spoons.
how about gratuitous destruction Finnish style? The Hydraulic Press Channel is also very entertaining.
They are in the process of getting a new press delivered. 300T! More mindless squishing of non-squishy things. :) @@mindcraftyD13
5 years later and I'm back to say that once again, you should’ve painted the earth on it so you could say you broke a world record!
This is getting ridisculous guys.
Still love you tho
I remember showing the original version of this with my Grandad who has since passed - thanks for reminding me of a wonderful memory (oh and great vid too lol)
A laserdisc! Wow, those came and left the market in about one year. We thought that was the future. Lot of people don't even remember.
You guys have GOT to start selling merch with images from these videos. I tell you, some of this stuff is high-quality art. I mean, take a still at 7:45, zoom it in, crop it and you got yourself a dope album cover!
For real. Even just put that image across the front of a t-shirt would look cool as hell.
I suspect they have a very good reason not to especially at this stage BUT, yes, it'd be dead cool
I repaired laserdiscs when they were the thing. When I opened the cabinet to the first one to troubleshoot it, I was amazed with the speed of the spin for such a large disc. It was a much improvement in video quality over the VHS tapes. The early decks had a HeNe laser in it. It was scarier when the spindle cover bearing bore into the slip sheet on the disc clamp causing the disc to vibrate. both the spindle cover and the sheet had to be replaced.
You guys literally have the coolest job on earth
The original has been my favorite for a long time, love that you're revisiting this
The colors along with the rippling effect were awesome to see!
The 90s floor mat, oh the flashbacks 💀
I think this is my new fav slow mo video. Those shards are terrifying.
I love the mouth noises when the melon gets cut in half. Thanks for that Gav.
if you go frame by frame at 5:45 you can see the reflection of the disc shatter before the disc shatters
To those who don't know you can go frame by frame in a RUclips video by pressing the < > keys to go one frame backwards or one frame forward respectively..
It astounds me every time I notice rolling shutter that we have put up with it at all. Imagine a sound recorder that recorded each frequency with a delay - nobody would buy it.
A video camera's primary function is to record motion, and yet most modern ones do not do this correctly.
Even the laserdisc knows the afterimage technique!
I would be really curious to revisit these as well as CDs and records... But somehow have them in a vacuum chamber to see just how much of an effect the air resistance is causing
I'm here once again to say please stop supporting better health.
I'm also here to say it was very fun watching the second watermelon cut attempt. After the piece kissed the melon twice, it made a beautiful exit stage left through the wood.
"I'll be fine, it'll be fine." Famous last words!🤣
I'd love to see what happens if you slowly approached a blade or something to see the disc being scratched/cut in slow mo!
the colours of the discs are so pretty! and it's crazy how deep it's cut the wood. the delamination looked pretty cool as well
The edit coming out of the sponsor bit was fantastic! The symmetry at 6:40 is also something else.
They started spinning the first one, I saw the crate around it and immediately thought "that's gonna die". Did not disappoint.
Allways great to see these guys together, firming random stuff in slow motion!
The original spin to pieces was one of my favorites but this one takes it up notch.
Love you guys! The concept of watching things in super slow mo is random as……….but it’s just so entertaining 😂 keep ‘em coming guys!!!
You should do classic fireworks! Firecrackers, ground flowers, aerial fire works suspended from a string, etc. i feel like they would be so visually appealing
1:51 I appreciate the 30 Rock reference lol
You guys should try spinning skateboard wheels to destruction next!!
Mythbusters did a similar thing with CDs. The myth was that CD ROMs were spinning the discs so fast that they were shattering them in the drive. They saw that the CDs had a rippling effect when they reached a certain speed but before they shattered.
1:55 the CD is having a real "speeeeeen" moment
I feel like we should have some Adam Savage voice in a video of exploding cd's, or a guest appearance for the next one ;)
Maybe the next you do something like this, you could try using some sort of conical shapes nut or washer to more easily center the disc on the shaft?
I was going to suggest a regular washer, tapered washer (to get even clamping with the first washer), then tapered nut to hold and clamp the assembly.
So washer, item, washer, tapered washer, nut - for even clamping and support with centering.
Well it seems Dan buggered it up when he messed with it because the balance was completely effed after that.
My grandmother has a laserdisc player and dozens of movies. I remember being so impressed at the futuristic nature.
the spinning cd video was showed by a materials science professor in my class once, about 8 years ago now. i remember being hyped because i had already seen it ofc. must be watching you guys for around 10 years now 😅
this channel never gets old
Magic, love these guys
3:59 - Amazing way to demonstrate Coriolis Force by shifting into the rotating frame of reference. The broken pieces don't just move straight, away from the centre, but rather turn right as they move outwards.
I find it very cool how the half of the disk in the first break was falling down at first, and then when it hits the Dyson it sends it flying into the plywood
Awesome video as usual guys... I think though had you got washers to go in the centre hole of the disc, that perfectly fit the hole and the bolt going through it and then clamped on with larger washers to make sure they were properly centred up you may have gotten them to spin faster and break more like the smaller discs. Maybe
I do not want to imagine what would've happened if that first piece carried on through. That would've done some serious damage. Absolutely insane.
Absolutely love virtually hanging out and goofing off with SmarterEveryDay!
I love that you ended up doing the VHS tape too, outstanding!
I'd love to see a hard drive platter. Those things can spin!!!!
Far more entertaining than I expected!! Hard to believe the thin plastic could cut through the wood so easily! 👍👍
I wanna see them spin anything and not just discs but still quite satisfying
I honestly believe slowing down reality is just as important as zooming in (to atoms). I am absolutely FASCINATED by reality slowed down. It definitely answers questions/theories. As a golfer growing up, there were theories about what was more important in the swing for shot shaping/accuracy. I think the answer is much more well known now than it was 40 years ago, but endless options like these could give The Slow Mo Guys content until they are using walkers with tennis balls on the frame to get around. So much to do and learn.
IM SICK OF BETTER HELP ADS!!
I’m sick of all ads tbh
I like how they saw a piece of CD cut straight through the box. And their idea of reinforcing the box is just leaning some more random piece of wood around it.
So previously, you spun a vinyl until it fractured, and that was the most lethal thing you've done. But now, you broke that record.
Definitely need to set up a few of those, along with some ballistic gel heads, that would be awesome 🤘🏻