Revisiting Myths That Surprised Us! | MythBusters | Season 4 Episode 25 | Full Episode
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- čas přidán 8. 07. 2024
- Myths Revisited offers Jamie and Adam the chance to clear their name! Returning to the most controversial myths, they repeat them to see if their original answer was genuine or bogus!
Using science as a tool, Hollywood special effects experts attempt to debunk rumours, urban legends and popular myths that have captivated the minds of many individuals.
#MythBusters #FactOrFiction - Zábava
To all the "the painting/pottery audio recording is not made right" people, I would like to remind you that the myth under test is NOT if it's possible to create an audio recorder by painstakingly setting up every element so that it's optimally arranged to record audio. That myth has already been confirmed in the mid 18 hundreds. The myth is if it's possible to ACCIDENTALLY record sound while doing something that has NOTHING to do with recording sound like painting or pottery making. Please, context IS relevant.
But thez weren't doing it right. Especially the reading part, using a gramophone stylus can't work, because they work with special shape of the grove. They'd need a laser scanner and some advanced reconstruction to be able to do it.
@@mrkv4k If you can record sound with a fat needle on malleable clay or a fluffy paintbrush on paint you should also be able to replay sound with the same tools. You wouldn't be needing a laser scanner.
@@stompsandsynths If something recorded a signal by mistake the signal would be so bad and weak that it would require a really precise instruments to read it back.
@@stompsandsynths Fat needle nor fluffy paintbrush are made for sound recording. They can pick up air vibrations (aka sound) and transfer it to the clay or painting, but the signal is going to be weak and its quality gonna be very bad. If you'd want to pick it up, you'd need precise instruments and post processing for reconstruction.
Now, the original myth isn't about being able to record good quality sound, but about being able to pick up something. And that is definitely possible and has been done successfully - with the right tools. What they were doing is pretty much nonsensical.
@@leucome 1: to accidentally record a sound the system still needs to be able to record sound in the first place to whatever extent
2: no system has infinite resolution, which means that it will reach a point where it's just not able to represent the information. The less the system is optimal the lower the resolution
Kari screaming at the pottery will be ingrained in my mind forever
I like to imagine Picasson just yelling his name like a pokemon at the canvas with every brushstroke.
Pi-CASS-Ooo!
The best thing about the "Revisiting Myths" episodes is seeing the team be annoyed about fans pointing out the flawed testing methodologies on Mythbusters.
The wouldn't have redone anything if they didn't have their own doubts or received an overwhelming number of protests about a factor possibly even supported by some independent source.
I mean, it was a tv show, not a scientific journal. I'm sure in many instances the "flawed testing methodologies" have a lot of "producer magic" attached to them as well.
@@alecguevara1835 There are actually episodes where they get upset because the producers are asking them to change how they test to make it _accurate_ to the myth
@@dungeonsanddobbers2683 any episodes besides the palm? cant think of any more off the top of my head, but that might be because "straw through palm" was recently uploaded
"Now, let's auction this for charity".
Always loved the man, but never quite realized he was _such_ a saint.
Grant: "I'm pumping as fast as I can"
Miss him
Am I the only one thinking they only made the baseline test with a different nozzle than the sucessful firings? Tho I guess the difference is huge enough that it doesn't matter.
They used a way smaller nossle in the follow up tests and didnt compare that to what that nossle would do without the salami. Of course a smaller nossle will make more thrust.
Base test had no nozzle nor any ignition (nox degrades at high temperatures and yields energy :]) the only real thrust they got off the rocket was from pent up pressure releasing once the "super heavy duty nozzles" exploded and released said pressure (also why the 2(?)/8ths worked better than the 5/16ths)
You can also see the detail of no flames once the nozzle explodes (like in the original rocket) meaning there's no combustion, just nox venting. Dogshit tests because they didn't have the balls to admit being wrong.
@@viciousslayer They just weren't very experienced with rockets and explosives yet this season. they got way better later on.
7:08 I often forget MythBusters is produced by an Australian company... then they drop in a Falcon ute. Nice
That pottery/painting myth was executed so naively. So much pressure on the hairs, high pitched and ling sounds instead of just some bass kicks to test the concept. Oh well, I still love the show and this upload!
I completely agree! They treated it like they were expending something mystical or magical. The brushes were supposed to represent the stylus and the paint was supposed to be the thin medium that can dry up leaving the small waves printed.
It is true that they held the brushes in a way that it is not in favour the recording to happen.
But the real problem is that paint is fluidic and the tiny fluctuations of the brushes caused by soundwaves would instantly disappear before the paint dries.
When making a vinyl record, they use a very strong needle and they drive it with several hundred watts of power, on a lacque which is already dry and stiff. You see that it is kind of super far from the paintbrush version?
@@pakuma3thing is the recording techniques weren’t invented yet so people have no way to comprehend that they could record anything onto a medium they just considered good for making pots. Anyhow the engraver should be rigid (not like a brush but a straw) and would need to fixed and connected to the sound source or a cone to create any usable results.
Yeah, i immediately facepalmed during the intro shot of Kari screaming into the brush.
The paint will not respond to the vibrating brush hairs even if they managed to make them vibrate individually, because the paint drags the hair down and because of it being a rather thick fluid, it will act more like a cushion and not compliment the vibrations.
And yeah, putting pressure on the brush also isn't a good idea, plus every hair will have a different vibration reaction to the sound, plus the hairs that actually touch the surface will be smothered by the hairs on top of it and the weight of the paint and pressure put on it.
I mean, i'm not an expert, but those are just a few things that we can spot as casual viewers, pretty embarassing sometimes.
But yeah, i do love the show still, it's just sometimes i wish that they were a bit smarter.
Having said that, i'm not sure what they could've used to record and play it.
Not having watched this episode yet just the intro, i guess you need something that can spin at the speed of sound, or at least at the speed that it takes for sound to travel through a hair(or more likely something a little more rigid), and then kinda like a clay kebab spinning fast and the stylus carving the line on it while quickly going up (or down) as to prevent crossing lines.
But i'm not sure how they can make the stylus vibrate, other than bass lines and kicks, because the stylus has to be really thin to vibrate fast and strong enough to be picked up by the fast spinning kebab.
Maybe they could record 2 seconds per meter or so, if they can actually record, and play it back. (Edit: and also, if the kebab doesn't tear itself apart at those speeds, maybe a centrifuge would be better, with the stylus in the middle radiating outwards onto the clay.)
Not to mention they didn't prep the canvas and used the most basic type of paint. I do not think the masters would have been so loose on their masterpieces
The barrel cutting myth made me fume in the most painful anger. It's as absurd as thinking that a piece of paper can cut through a tree
The thing they're doing wrong with the katana here is that they're using the sword as a bashing material instead of a slicing material. Katanas are swords made to slice their targets not hit and bash their targets. The results could have been different if a slicing motion is added to the mix.
Was thinking the same thing, but likely the impact area and time of contact makes that negligible here.
In this case it doesnt matter since normaly with a sword, you do a downwards swing to allow gravity to do its thing. With the contraption they are just removing the human aspect of how it is normaly used. Even if it was a cutting motion or the contraption, it wouldnt matter as the edge still hits the target.
@@eliaslaban As part of that downward swing, often you would pull back at the same time, which changes it from purely chopping to include slicing as well. There's a reason a proper swinging action cuts easier than just chopping straight
“ that’s a heck of a lot of force for such a small salami” Thats what she said 😂
I am highly amused by the comments about the painting recording. I
Here, you are presented with the opportunity to get out your paintbox and prove it for yourselves. It really is a 'You CAN try this at home' situation.
My personal opinion: not a hope in hell of it working.
💚🐇🐴💚
I heard the sword cutting the barrel occurred in the 1700's when Japan was opened up to Europe. In that case it would be antique Japanese swords against muskets.
That makes it even less likely since japanese swords in the 1700s were still often made using the very poor quality steel and iron in japan compared to much of the developed world at the time.
I've been a front seat passenger in Tanzania in the Serengeti National Park. This is EXACTLY what he did, to the point I started to automatically do it for him. The road were fast and loose surfaced!
I remember drivers doing this in Australia. My father, a long distance truck driver, didn't believe the hand would work.
the upload schedule for this is so random but hey i'm glad they're up either way😂
2:43 i love how "slap dash" Jamie is - whats wrong with the fans, it flew didnt it?
Isn't that trust in those cases been recorded so high, because of exploding nozzles, not from ignition itself?
I think this rocket experiment is still very badly executed. The force they measured is clearly just one explosion, with a few milisec duration. Which can come from the nozzle exploding, or that the rocket is kinda blocked, as you can see on the footage, and the explosion is when the nox is released and gun powder ignites, there is simply a lot of pressure building up and being released quickly when the blockage is shattered.
Thrust on a rocket is never one quick explosion. If there would have been any true chemical reaction going on inside the rocket, it would have lasted for at least a few seconds after ignition and the explosion.
I love the mythbuster guys, but they sometimes clearly did not give a f, and you could clearly see this on them here as well.
Rocket motors are rated in terms of total impulse, for that they should have taken the integral of the force over time and not peak force.
Why did they choose a hybrid rocket for the salami myth? If it were me, I would have marinated the meat in a potassium permanganate solution and infuse the oxidiser in the meat itself. Alternatively try a nitration bath.
there is a legend from a ww2 cook defending his outpost against a tank as lastman standing:
He covered everything up with some cloth and beat the shit with an axe out of the machinegun barrel until its broken.
Can you break a machinegun barrel from a tank with an axe?
Grant: "I'm setting the machine to super human speed right from the start"
One test later: "Our result doesn't count because the machine is set to super human speed"
Well why turn it up then? This ain't even the only time they dismissed all their tests because they didn't do any with the regular numbers before "amping it up".
Because it saves time... Even with superhuman strength, none of the tests worked
To give the sound recording myth a best shot, they should try painting on glass or smooth pottery, since that will get the surface noise as low as possible in a still realistic scenario. With a paint that dries quickly. And use a VERY light brush stroke. Literally just the tip. Kari was smooshing half of the length of the brush bristles against the painting, and that is obviously longer than the wavelength. Also the harder the bristles are pushed in, the more their movement is dampened by the part that's rubbing against the paint/canvas. If that works I'd try a wooden board, with and without an even coating of primer. And if it doesn't , I'd look at yelled at and non yelled at brush strokes under a microscope to see any differences.
First time I heard about the katana vs machine gun myth was on Pawn Stars. Some katana expert was called in to appraise a sword and he told this tale like it was gospel. One of the few times in my life I've shouted "f-ing idiot!" at the screen.
Watching them try to shatter shatter-proof glass with rocks is hilarious. I knew it was doomed from the start. And then they move on to safety glass. Which is designed to do the opposite and hope it won't shatter? Heh.
I think Tory pumps 7 times not 6.. I can hear 7 pumps?
Australia mid 1970s
I remember when I was a kid my mother use to put her hand up on the windscreen whenever a truck went past.
She told me it was supposed to stop the glass breaking. So I take it the glass myth would have came from Australia
@@GCCG76 I don't know how you think a trucks engine could break a windscreen lol but it's funny
The Windshield Myth: Back in the times, my family was on vacation in an vw beetle from 1057. We got a stone thron into our windshied. It shatterd, but stayed in place, with a unshattered lookout as big as a palm. Wie were driving like this for several kilometers, with my mother pressing her palm against the window to prevent it from the airstream pressing it into the car. that's where the myth comes from!
I don't think a Katana can cut through the barrel of a machine gun, the Katana seems to have taken on a mythical quality in recent years which it doesn't entirely deserve. However the cutting rig they use doesn't really emulate the type of cutting action an experienced swordsman would use. They wouldn't simply chop at the barrel but the blade would be drawn back in a slicing/cutting motion as it hits it's target. I'm not saying the Katana would go through the barrel but, if this myth is being tested, it should be as close to actual conditions as possible.
I think, if a gun barrel is hot enough... You can make some dent in it with strong cutting strike. Not enough to cut even remotely through but enough to start a myth.
25:55 they keep using this handheld rig and are surprised they get nothing when his shaking hand jumps over 6 ridges
Imagine putting a stylus on a Bob Ross painting for a rerun 😂
They must have clean up the salami rocket in the original episode. They in all likelihood must have seen the unburnt salami in the tube.
somebody should make an "international" option for the subtitles and the only thing it does is subtitle things they say to metric
Feel free to volunteer!
"It's a heck of a lot of force for such a little salami...."
That's what she said.
00:35 this sure hits different now :\
I wonder if you could use a laser to pick up the small imperfections in the paint
5 gallons per hour @ 55mph? Wow, what engine does this car have?
Weren't car windscreens already laminated by this point in time? They're designed not to shatter instead they stay in one piece.
I feel like the sword machinegun myth is they were hacking at the barrel to bend or rip iy apat, like using a cleaver on a thin branvh
Fuel economy totally messed up.... 55mph is 88kmh, 5.2gph is 20 litres. So 1hr driven at 88kmh is 88km traveled, which does not take 20 litres of fuel, should be 1/3rd and tipped them off that no pickup has that poor economy... Looks like an injected gasoline pickup with a fuel pressure regulator and fuel return line they never accounted for... Should of been done by injector pulse.
*Australian Mechanic/EFI specialist.
The slingshot made me think that I'd love to see the "ice bullet" retested using the most powerful slingshot (aka catapult in some places) they could find or make.
Am I an evil genius?
"invisible armor for the skin you love to touch"
the timing in the strike is essential,a samurai strike could never be done by machine....and was it real japanese made sword?
you could slag a machinegun barrel just by firing it, so if it starts to litterally droop from the heat, and you hit it with a sword
They are over-compicating things with the salami rocket. All they need is a control. Make the same rocket but not ignite the salami. Only release the gas and see if they have the same lift.
Im sure if you processed the salami in a way to get the fat and oils out maybe then it may work better?
Amazon prime day ads getting a bit boring now yt.
Without watching the myth, i think the paint recording is busted. The sound perturbation on the brushes wouldn't be as intense as the natural human movement vibration. As skilled as an artist is, a 100% straight stroke is impossible at the level required to enable a record or something like that.
Shouldn't the higher mpg be better since you get more miles per gallon?
storing gunpowder filled salami in the fridge labeled human food only? that seems.. smort
OR it's a joke!
Or they assume the gunpowder won't contaminate other foods, especially wrapped in aluminium foil?
12:58 I dont remember this episode of the Ali G show
44:40 the sword survived
So your saying i can build a spaceship and fill it with cows and explore space for free by making a salami engine, interesting
21:04 without watching, i know this one is busted... first of all, linen which is what painting canvas is made out off, are textured, so it will pretty much cancel out any groves that it might form... 2nd paint texture arent that define, you can feel it, but it's not deep enough to hold any sound vibration... 3rd and finally, the paint in the paintbrush would prevent any movement from sound... so the brush bristle are not going to vibrate while painting.
I think it would be possible to correlate the vibration the paintbrush was under while painting if you looked at the resulting stroke finely enough.
It just would be on a scale so minutely and certainly not encoded in the thickness of the paint readable by a vinyle player that everything they did was doomed from the start.
🤘
Salami FTL engine ignite
😂❤😂❤
3:43 "Shiny Disco cameraman"
That is Mike Boom, sticking through his head.
Way too small nozzles, they basically making really bad pipe bombs, probably gun powder cause exploding nozzle. Explosion causing peak power with addition of NOS. Did they weight and calculate gun powder portion? What ive seen similar nozzles, they about half diameter of fuel grain, definetly not quarter or even less. As some said: difference between bomb and rocket is nozzle.
They should've got a Hattori Hanzo sword
Nah, the s5 shock resistant tool steel mason sword.
25:35 just like the 1st time they tried doing this it would be nice if the narrator would stop talking so we can hear
I swear I never emailed mythbusters, but this is one of my top 5 episodes ever.
They don’t just tell the myth….
21:36 What party just got its butt kicked in the UK election?
So has anyone else made a working salami rocket? Anyone know?
looks like an episode of Boys
I think they should test again the only nos part but the with the new improved nozzles
Yep yep uhu that's all jamie can say wen he is in update Sequence 😂😂😂
They should have found a way to ignite the sausage at the top end where the NOx enters the chamber. Better chance of a sustained ignition I think.
Nice helmet ^^
The barrel cut through could be a saying, but did they use a real samurai sword?
Also, those mg´s could have been hot many times, making it weaker.
But they did make a cut in the barrel, rendering the guns useless.
Welcome once again to Hollywood Science.
aww, what A shame to damage and ruin old firearms just because someone online wants to see it done. Do it to the new modern and ugly firearms. Not the classic and stylish ww2 era weaponry😥😥
They take sooooooo long to load the barrel it is not even close to the temperature they quoted.
But you tested it with two very different nozzlepieces 48:50 you never tested the NOX alone with just that significantly smaller endnozzle you flipped to at the end 46:00.
it makes very little sense to compare one to the other, when its so different endnozzles and you used the biggest end nozzle with the nox alone 17:45
but who cares this has nothing to do with science, just crude staged entertainment.
You need a real katana for cut not a shit Sword
way to cold some ww2 Maschinen Barrels got so hot they almost melted Maschinengewehr 42 as one of them they changed the barrels to keep bullets flying in ww2
At 13:52/53 I would have fired him for lax firearms safety.
He pointed it without care at Kari.
once again they failed salami rocket, obviously changing nozzle will increase thrust and base test without salami was with wide one.
redhead was such a babe
Tory pumped 7 times not 6 🙂
These sound myths are just hard to watch because what they are doing can't yield any results...
Hollywood science.
Sure ... for a left wing vegetarian starting a BBQ looks "dangerous" .... OMG
37:50
WHO used tempered windscreens until 94 😅
Why does it say BBC and MasterChef on the screen?
There’s something dodgy about it, indeed.
Probably because masterchef was show airing after them and the bbc had the rights to air it in the UK? I don’t know tho…
I guess that it's where the source file is taken from, BBC that is (was probably aired when they had masterchef going). But it's a good thing since the other sources have the awful mono narrator, where as these don't.
MasterChef became really different show after a while.
@@TyroKitsune MasterChef, Rocket Chef; How to make selfcooking emergency rations, salami savers.
There is your problem
but if you are going like 100km/h and you are behind sombody at that speed, the proyectile will sum his speed + yours so it should be way more than that.....
First
2d
The katana myth, Japanese soldiers knew how to use it, you don't use it as you would a baseball bat, that needed to apply an angle to the cut to slice, not just a straight hit
Wouldn't make a difference.
Yeah, you always cut at an angle, that was a bit annoying, but i do think that it wouldn't have mattered much, as metal on metal at an angle likely just results in a glancing blow.
And if it was any hotter, then you might as well hit it with a baseball bat, because at that point anything could cut through wobbly metal.
Doesn't apply to metal. Doesn't have fibers.
I guess it wouldn't have made any measurable difference
You're wearing a glove. The myth is someone putting their bare hand on the glass. I don't consider the myth busted.
It's irrelevant. The myth is about putting pressure on the glass to brace it against damage.
I wasn't happy with how he put his hand against it, i was expecting a full flat palm, ideally right at the spot where the BB hits, to theoretically have the hand simulate a laminated effect.
But yeah, on the other hand (pun intended), that type of glass just isn't made to stay in one piece once it has major cracks, so i'm not sure if it would've held together even if the initial blow was softened.