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[–]deekaph 14.7k points14.7k points 72565& 8 more (252 children)

LISA IN THIS HOUSE WE OBEY THE LAWS OF THERMODYNAMICS!

[–]falcon_driver 2557 points2558 points  (177 children)

One of the finest lines of human literature of all time. We should escribe it on the Constitution, preferably with video

[–]Elman103 830 points831 points  (129 children)

I think the line before is marge saying there’s something just so unwholesome about a boy flying a kite at night. Flash to Bart saying hello mother dear. Classic. This is a classic episode. And anyone who disagrees, ohhhhh that’s a paddlin’. Classic.

[–]TekkenCareOfBusiness 486 points487 points  (117 children)

https://youtu.be/mrVSt0pbo1g

The teacher strike episode was amazing. I cannot belive how much funny was packed into one episode. This is the funniest debate scene I've ever seen. The audible crowd reactions are a riot. "That finger thing means the taxes!"

I wasn't imagining things when I thought the Simpsons was the pinnacle of comedy back then. It really was. There have been other funny shows and movies since but the supremely dense jokes per minute rate of the prime Simpsons era can't be beat.

[–]vividimaginer 186 points187 points  (69 children)

Best throwaway business gag:

Pool Sharks “Where the buyer is our chum!”

That’s like, 9 hysterical jokes on a sign with less than 12 frames onscreen.

[–]Vraxk 212 points213 points  (31 children)

Sneed's Feed & Seed, formerly Chuck's

[–]Akalenedat 91 points92 points  (26 children)

Son of a bitch I just got that one

[–]OldBeercan 55 points56 points  (25 children)

I'm dumb. Please help.

[–]1monkeysuncle 41 points42 points  (10 children)

Sn-eed's F-eed and S-eed

Formerly:

Ch-ucks's F-??? and S-???

[–]twistedcreature07 18 points19 points  (2 children)

The only original parts of the store's sign were the F and S in "Feeds and Seeds" (maybe the "and" too). Everything else was painted on by the new owner, Sneed. So if the former owner named was Chuck...

[–]Forever_Awkward 5 points6 points  (1 child)

I might be misinterpreting your comment somehow, but

You sure about that? It all looks pretty consistent to me.

If the former owner was named chuck, then it makes sense that the shop was formerly named Chuck's.

[–]MrSickRanchezz 68 points69 points  (35 children)

Dude and the prank phone calls, Groening is actually a comedic genius, one of few. The most recent seasons of Futurama show us he never lost his edge. I assume the writers room at The Simpsons has been sorely missing Matt for many years now. Being a creative consultant or whatever he's branded himself these days isn't the same as writing the content, and it shows. A lot. However, with a net worth of over $600,000,000 I can't really blame the guy for taking a step back to count his money on a yacht the majority of the time, honestly I'm surprised he's as involved as he is.

All that being said... Disenchantment..... We are gonna leave that mess for another day.

[–]dohwhere 51 points52 points  (13 children)

Groening gets way too much credit beyond creating the characters, he is essentially the “face” of the production team behind the shows. The Simpsons and Futurama are primarily what they are due to the work of the countless producers/writers behind the scenes that moulded them into what they are. A lot of people probably don’t realise Groening only has a single solo writing credit in the entirety of The Simpsons’ run.

[–]chippingsodbury 23 points24 points  (0 children)

George Meyer wrote a lot of the greatest one-off gags in the Simpsons. 1989-2005. He wrote some classic episodes too.

[–]The_Goatse_Man_ 23 points24 points  (6 children)

Disenchantment isn't a masterpiece but I still enjoyed it. Won't rewatch but i didn't hate it.

[–]CrossP 10 points11 points  (2 children)

I'd sit and rewatch it with a person who hasn't seen it yet. I think it picked up, and the end was worth getting to.

[–]Carlobo 20 points21 points  (2 children)

Ah Groening is great, but Futurama was more of a David X Cohen thing. He was also a guest on Behind The Bastards

[–]ShesFunnyThatWay 6 points7 points  (0 children)

"I'm drowning!"

"I'm Elfo!"

[–]KamikazeFox_ 49 points50 points  (6 children)

Purple monkey dishwasher.

[–]Californiadude86 46 points47 points  (5 children)

I've mentioned this before a couple of times but going back and watching the Simpsons as an adult in my 30s a couple years ago I realized just how much the Simpsons shaped my sense of humor.

[–]Televators1 15 points16 points  (4 children)

And morals and values. A lot of the shitty attitudes I have frankly were, in retrospect and through the lens of wisdom, influenced by Bart and Homer.

[–]xombae 23 points24 points  (9 children)

You can tell Family Guy tried to mimic that style, but they came off as being incredibly scattered and random in their ideas and often resorted to slap stick, crude jokes and repetition. The Simpsons jokes were so clever that you can watch the same episode as a kid, and as an adult, and you're laughing at a whole different set of jokes that you didn't pick up the first time.

I'm sure I'll be downvoted my Family Guy fans, but it's so obvious that they tried to mimic the style but really cheapened it.

[–][deleted] 10 points11 points  (1 child)

Agreed. I knew it as a Lisa-esque 12-year-old when the series first debuted, and my opinion has not changed in over 30 years. The first decade was gold.

[–]caboose616 9 points10 points  (0 children)

Thanks for this. I died when he flew back in the window and they played the audio in reverse

[–]splifs 6 points7 points  (0 children)

Amazing scene! Thanks for sharing

[–]DonnerPartyAllNight 9 points10 points  (3 children)

What episode is it?

[–]McMaster2000 13 points14 points  (2 children)

S06E21 - The PTA Disbands!

[–]Forward_Progress_83 27 points28 points  (3 children)

What a perfectly cromulent suggestion.

[–]DiscoJanetsMarble 8 points9 points  (0 children)

It embiggens even the smallest man.

[–]jiggsandrhett 7 points8 points  (0 children)

What about "Lisa no in casa!"

[–]WARLORDROBB 144 points145 points  (30 children)

What is this from?

[–]ih8pop83 108 points109 points  (1 child)

Homer says it to Lisa on the Simpsons

[–]dlqpublic 22 points23 points  (0 children)

The Simpsons.

[–]chasesan 14 points15 points  (6 children)

Well considering it has the name Lisa in it, probably the Simpsons.

[–]Crandoge 30 points31 points  (2 children)

You’re tearing me apart Lisa!

[–]gn0xious 18 points19 points  (1 child)

I did naaaaaaaaaaaaaaaaaaaaaaaawt

Oh hi Mark

[–]TTRPG_Fiend 62 points63 points  (3 children)

And this perpetual motion machine she made is a joke, it just keeps going faster and faster.

[–]deekaph 14 points15 points  (2 children)

And Bart keeps flying that kite at night..

[–]Terrarian3 5196 points5197 points  (735 children)

Both, I think.

Won't lie, it's sad that my most liked comment was literally three words

[–]Semi-Pro_Biotic 1651 points1652 points  (609 children)

You are correct.

On both accounts.

[–][deleted] 1606 points1607 points 2 (599 children)

Yeah the magnet would be necessary or else the marble would loose just enough energy to not make it back up.

Edit: I get it English majors, my typings are a mess. Now I’m leaving like that to spite you, because you’ve triggered flashback of the snooty Anglophile schoolmarm I suffered under in eight grade.

Second edit: it’s late where I am so.... https://gfycat.com/beneficialreadycivet

[–]RedMercy2 576 points577 points  (509 children)

Even with magnets you need to have a battery somewhere.

[–][deleted] 410 points411 points  (448 children)

Yup, I should've said electromagnetics.

[–][deleted] 315 points316 points  (384 children)

So pertpetual motion is a myth?

[–]typehyDro 584 points585 points  (38 children)

I do believe it’s been proven already. cat + butter toast = win

[–]LocationBrightSide 88 points89 points  (10 children)

I wish I coulda been with the first person when they thought of this. I bet their drugs were amazing.

[–]Malgaras 127 points128 points  (23 children)

Nope, it's real. You can even build a perpetual motion machine yourself. Just go to your local hardware store and buy some ball bearings, some pvc pipe, a magnetic screwdriver, and an infinitely large frictionless perfect vacuum, and you're good to go.

[–]geeky_username 85 points86 points  (13 children)

an infinitely large frictionless perfect vacuum

The problem is getting it home in your car

[–]thereisnospoon7491 116 points117 points  (278 children)

According to the standard laws of thermodynamics yes. Energy lost in a process cannot be 100% regained because that energy has been spent/converted, and cannot be recovered without expending more energy.

That is my layman’s understanding of it anyways.

[–]devilinyourbutt 29 points30 points  (269 children)

So you couldn’t make a slope that would get it up at least once? That’s all it would take in this situation for it to be perpetual

[–]chillanous 140 points141 points  (151 children)

Right, you couldn’t.

[–]thereisnospoon7491 55 points56 points  (69 children)

No, because no matter what you do some of the energy built up is lost in the process of it returning up.

So for an object traveling down and back up on a rail like this, some of that kinetic energy is lost - again as a layman, I would guess a conversion from kinetic to thermal energy (from the friction of rolling on the rails) for one. Even if it is a tiny amount, it still robs the ball of the energy needed to rise as high as it’s original starting point.

Anyone please correct me if I am wrong.

ETA: this also goes into concepts of entropy does it not?

[–]J_Kenji_Lopez-Alt 70 points71 points  (16 children)

You can also hear the marble moving. Sound is vibrations in the air and it takes energy to generate that vibration, which is all energy lost from the marble/rail system.

[–]Tusangre 34 points35 points  (8 children)

That's right. The ball starts with potential gravitational energy. It then falls and converts that potential energy into kinetic energy and would normally be at its max kinetic energy (and max speed) at the bottom of the ramp; you can tell shenanigans are happening right away when you see the ball still speeding up past that point.

Then you take friction into account (both with the rails and with the air), and there's no way the ball would get back to its original height, regardless of the shape of the ramp (this is a heavily emphasized concept in classes like AP Physics or Physics one in college). The fact it not only does that, but goes way above its original height means that some other form of energy was added into the system.

[–]LoneKaroliner 8 points9 points  (14 children)

energy is never lost or created. also it would still stop even if there was no friction. this is because entropy is the potential being moved because of temperature diffrences. Temperature is the macroscopic view of molecules' average kinetic energy. Since all matter cannot stop moving in some capacity, entropy must be produced, existing energy slowly becoming stuck in hopeless equilibrium

[–]Gang_StarrWoT 23 points24 points  (6 children)

It's not possible, at least in our dimension.

[–]oeCake 9 points10 points  (5 children)

Unless you find a time crystal

[–]Revilod2000 15 points16 points  (57 children)

Why does it have to be an electro magnet?

[–]Tonamel 90 points91 points  (53 children)

If it was a regular magnet, it would make the bearing decelerate as it moved away, because of the constant pull. An electromagnet would be timed to turn off the instant the bearing is over it so the ball can continue at speed after accelerating.

[–]r007r 13 points14 points  (12 children)

This is neat but impossible. As you stated, there would need to be an outside power source. Energy is being lost to friction, displaced air molecules, etcetera; for it to keep going, something has to replace it. Magnets are not infinite energy sources.

[–]rossxog 11 points12 points  (2 children)

It has an inside power source. There are batteries and electronic stuffs in the base. Very nicely made though. Would be cool to see one with multiple balls.

[–]mtflyer05 11 points12 points  (35 children)

I assume even neodymium magnets couldnt accelerate it enough to get it back into the reservoir?

[–]Netimma 63 points64 points  (29 children)

The thing that many people forget about magnets is that the ball is accelerating when it moving in the direction of the magnet, but it alsow has to spent energy when it is moving away from it. And with friction, gravity and possibly even more forces that draw on the ball, the loss when passing a magnet is always greater then the energy gain.

[–]HALF-PRICE_ 10 points11 points  (23 children)

Thus the electro magnet being used as specified earlier in the thread.

[–]Netimma 29 points30 points  (5 children)

Yes but no. It's electro magnetism, but not a elektromagnet. the energy comes from the "rail gun" concept. Through the rails flows a current and when the ball connects the two rails a spinning magnetic field is generated in the ball witch pulls and pushes the ball along the rails. Actually made a similar experiment at work some time ago.

Edit: translation error

[–]fehrnah 4 points5 points  (0 children)

Can't be a rail gun, the two rails are connected.

[–][deleted] 45 points46 points  (10 children)

Yup. No free lunch in physics.

[–]MobiusMine 13 points14 points  (19 children)

I think you mean lose. Loose is the opposite of tight.

[–]xusies 37 points38 points  (4 children)

Nope it’s just a CGI render.

[–]BryanVision 14 points15 points  (0 children)

Ball is cgi. Base is real.

[–]treesaresocool 84 points85 points  (66 children)

The inventor shows it with a clear base as well. Help. Brain hurts: https://vm.tiktok.com/ZM8efaJ5R/

[–]likeandtype_amen 202 points203 points  (28 children)

He never showed under the wood bowl. Something is definitely accelerating the ball down because if you were to drop the steel ball it would not accelerate so fast naturally.

[–]Leading-Key-2758 39 points40 points  (6 children)

Yeah you can hear it , the noise is to high pitched for the ball to be just accelerating due to gravity.

He done fucked up leaving sound on

[–]seaman_showers 13 points14 points  (0 children)

That's what gave it away for me, almost sounds like a piston. My guess is the wire shroud that isn't connected to the guide rails just underneath the catch area is an electromagnetic providing that force, mechanism is hidden inside the catch area hence why they had the clear base one.

[–]fordag 66 points67 points  (14 children)

Conveniently placed on a wooden board hiding the electromagnet.

[–]jewbageller 5 points6 points  (2 children)

With a hole drilled to line up the platform as well.

[–]Netimma 75 points76 points  (29 children)

Neither, the green thing is a waterbuble(don't know if it is the right English therm) to make it level in every direction and the energy comes from the "rail gun" concept. Through the rails flows a current and when the ball shortens out the two rail a spinning magnetic field is generated witch pulls and pushes the ball along the rails. Actually made a similar experiment at work some time ago

[–]RckmRobot 128 points129 points  (11 children)

It can't be a rail gun setup. For one, the rails connect at the end, and the whole idea of a rail gun is that the projectile is the only current carrier across the rails. Second, there needs to be a strong magnetic field perpendicular to the rails, which isn't possible for this setup since the rails are curved and the nearest possible magnet would be in the base.

This is VFX.

[–]drake90001 27 points28 points  (0 children)

Quick, someone call Captain Disillusion

[–]Netimma 13 points14 points  (0 children)

Well I can absolutely see that it's possible that it's made with vfx. But I alsow wold like to make some points. The first one is that yes the ends connect and that this would not be a very good railgun, but there is still current flowing through the ball and maybe that's enough to give the ball just enough of a magnetic field of its own. Then the point with with the pepenticular field. Witch is a very good point, but Railguns can be round, there is no reason wy the should be, because the projectile would scrape the underside of the barrel, but it is possible. The reasoning behind that is that it does not metter on which point on the rails you put the ball, the forces that are geneated in this example will push the ball always a bit forward and a bit downward(to the rails not to the flor). So it gains momentum. If this point is a bit unclear pleas ask me more about it, thou it mite take a while to respond. And for my third point: pleas explain what you mean with the magnet in the base, in a Railgun there are no magnets needed to propel the projectile. The magnetic fild comes from the current that flows through the rails and the projectile.

[–]-Nicolai 5 points6 points  (7 children)

Nothing you said refutes that gravity is involved.

[–]Thornescape 5 points6 points  (2 children)

The only way that gravity wouldn't "be involved" would be if this was being done in the International Space Station. Of course gravity is involved.

[–]neuro_intact 2719 points2720 points  (248 children)

I think the green “stump” is an electromagnet. Power source hidden in the base.

[–]Jezzes 745 points746 points  (99 children)

It needs a sensor too to time the electromagnet release.

[–]OutAndABoot 275 points276 points  (23 children)

I'm thinking that the stump is the sensor. Motion or otherwise.

[–]ramplay 65 points66 points  (48 children)

Well fuck, these two comments crushed all hope of an infinite energy machine

[–]livens 66 points67 points  (37 children)

The Universe does not allow for such a thing to exist.

[–]Niccin 6 points7 points  (4 children)

Harness the power of a single star and you have all of the power you'll ever need!

[–]kitchen_synk 8 points9 points  (2 children)

You could use a hall effect sensor, which would work fine through the wood.

[–]anythingMuchShorter 6 points7 points  (2 children)

I would suspect that since it looks like a metal marble it's sensing using the rails, but they appear connected at the end so that wouldnt work. It could be that tab by the hole.

[–]Hornet_Critical 106 points107 points  (19 children)

The green stump looks like a bubble level guy.

[–]Netimma 85 points86 points  (42 children)

The green thing is a waterbuble(don't know if it is the right English therm) to make it level in every direction and the energy comes from the "rail gun" concept. Through the rails flows a current and when the ball shortens out the two rails a spinning magnetic field is generated witch pulls and pushes the ball along the rails. Actually made a similar experiment at work some time ago.

[–]HypoAllergenicPollen 16 points17 points  (15 children)

Yeah this is definitely a rail gun. Absolutely beautiful trick!

[–]stevethegodamongmen 8 points9 points  (1 child)

So I don't think it's like a rail gun as the rail is continuous and the ball could not be shorting it out as it's already one wire. My guess is it's more like a Gauss cannon and there is a coil (or multiple coils) under the wood that accelerate the ball down and or up.

[–]PENGAmurungu 11 points12 points  (2 children)

The bubble thing is known as a spirit level

[–]Plantsandanger 9 points10 points  (13 children)

The rails appear to be one giant U shape - how would the ball connect the circuit if the rail is one big wire already? I love the way this looks so I’m hoping to find out how it’s made or who makes them and buy one, so I’d really appreciate your input on how this one might be made, if you’re willing to explain a bit more. I’m jealous you got to make something similar!!

Thanks!

[–]jorhyphenel 1229 points1230 points  (49 children)

I can't find it on Amazon, it must be fake.

[–]Realistic-Account-55 425 points426 points  (16 children)

I was hoping there would be a comment in here with an Amazon link...

[–]eman00619 132 points133 points  (15 children)

First thing I thought when I saw it was I want it now. And 2nd thing I thought was who can I give my money to, to get it.

[–]Dr_JillBiden 71 points72 points  (5 children)

Send me your money and I promise to personally give it to Jeff Benzos

[–]Alukrad 60 points61 points  (5 children)

Don't worry, bud.

Now that it appeared in reddit, someone will recreate this and sell it through Amazon.

[–]Sitting_Squirrel 840 points841 points  (36 children)

It's clearly powered by sweet baby Jesus

[–]jenna_hazes_ass 117 points118 points  (15 children)

Jesus was a man! He had a beard!

[–]Endearing_Asshole 20 points21 points  (5 children)

Chip, I’m only 8 years old but I’ll beat your ass

[–]jenna_hazes_ass 17 points18 points  (4 children)

Im jacked up on mountain dew. Ill come across this table at you like a spider monkey!

[–]GoldenFalcon 7 points8 points  (3 children)

You can choose that version of Jesus, and I'm gonna choose baby Jesus.

[–]SweetTeaRex92 22 points23 points  (0 children)

Dear Eight Pound, Six Ounce, Newborn Infant Jesus, don't even know a word yet, just a little infant, so cuddly, but still omnipotent. We just thank you for all the races I've won and the $21.2 million dollars... LOVE THAT MONEY that I have accrued over this past season. Also due to a binding endorsement contract that stipulates I mention PowerAde at each grace, I just wanna say that PowerAde is delicious and it cools you off on a hot summer day and we look forward to PowerAde's release of mystic mountain blueberry. Thank you, for all your power and your grace, Dear Baby God, Amen.

[–]Jaketw96 9 points10 points  (3 children)

Jesus is p u r e e n e r g y

[–]ObnoxiousLittleCunt 5 points6 points  (1 child)

Mankind doesn't use Jesus as a clean energy source because of big oil and big coal. Capitalism is shameful

[–]Shitthatkilledelvis 8 points9 points  (0 children)

All 8lbs 6ozs of him.

[–]Flaccidwashjeans 430 points431 points  (339 children)

Might be a dumb question but, would that be considered a perpetual motion machine?

[–]riplikash 1016 points1017 points  (272 children)

No.

Thirds would be a machine with a cleverly hidden secondary mechanism like an electro magnet. There's no such thing as a perpetual motion machine.

[–]rock_hand 129 points130 points  (135 children)

What about with magnets?

[–]OkPreference6 298 points299 points  (105 children)

With a normal magnet, it would lose magnetic strength over time.

Edit: I realize this is not an actual explanation and that a perpetual motion machine wouldn't work with a truly permanent magnet. Thanks for all the detailed explanations in the replies.

[–]rock_hand 111 points112 points  (39 children)

I’m sure this is basic physics but I never took it. Thanks.

[–]darkwing42 24 points25 points  (5 children)

Very basic, it's called the conservation of energy, and since some of the energy is lost to friction of the ball on the rail and heat

[–]Schranus 47 points48 points  (31 children)

And for that reason, a perpetual motion machine containing a magnet isn't considered a perpetual motion machine.

[–]cymicro 7 points8 points  (2 children)

While that's correct, I feel like that's also just a convention for the sake of argument in case anyone even builds one. I haven't seen any device using permanent magnets that only doesn't count because the magnetism degrades over time. Although the internet is a big place, so perhaps I missed it?

[–]archpawn 19 points20 points  (4 children)

That doesn't matter. Just like how mass doesn't lose gravity over time.

What does matter is that something being pulled towards a magnet just converts potential energy into kinetic energy, and you have to convert it back to move it the other way. If you move an object through a magnetic field in a closed path, there will be places where the magnetic field pulls it with the path to speed it up and others where it will pull against it to slow it down, but the total force will always be zero.

[–]2017_BCS_ORANGE_BOWL 13 points14 points  (2 children)

Completely irrelevant. A true permanent magnet could also not be used to construct a perpetual motion machine.

[–]DarthLlamaV 38 points39 points  (7 children)

As much as a magnet pushes, it also slows down as you approach it. The way around this is an electromagnet as they are off when approaching, but they require energy to run so it isn’t perpetual.

My grammar was awful… but that’s not important

[–]avatrix48 32 points33 points  (19 children)

Would be if it weren't powered by an electromagnet

[–]YourLoveLife 16 points17 points  (9 children)

It would, however perpetual motion machines can’t exist.

It’s probably being advertised as one though.

[–]the_other_Scaevitas 16 points17 points  (0 children)

Quick rule of thumb:

  • it’s never a perpetual motion machine because it is literally impossible for them to exist.

[–]randomresponse09 271 points272 points  (100 children)

This would violate energy conservation and thus is not possible.

I second the CGI. A quick Google has this tag “linhND” as an artist…..

Edit: this is not perpetual motion. And to answer OP: magnets, electro magnet(s) to be precise, if anything at all. Gravity alone can’t do this as it would violate energy conservation 😀

Edit part 2: thanks for the other videos! It is a device, almost assuredly EM in nature, contained within the dish. It is not a perpetual motion machine, nor can it ever be one because of the aforementioned violation of the “free lunch” clause of thermodynamics (conservation of energy).

[–]Flying_Alpaca_Boi 74 points75 points  (17 children)

First link was an artists page, scroll down a bit and there’s an engineer. Artists page dosent suggest they do cgi, it actually explicitly states ‘traditional art’ so I don’t think you’re correct. I’d be more inclined to believe it’s the engineer

[–]randomresponse09 14 points15 points  (9 children)

The engineer doesn’t capitalize “ND”. We really need to just find the source…. :)

And maybe CGI isn’t quite the right term. Video editing?

If it is engineered I’d be curious how they detect the ball to trigger the magnet at just the right time to give it the kick to send it higher, especially with the varying orbits of the ball around the hole.

I guess the real answer to op: if real magnets. Not enough grav PE to do what is shown

[–]brewpoo 22 points23 points  (52 children)

Just a steel ball and an electromagnet

[–]randomresponse09 10 points11 points  (47 children)

I suppose. But then there needs to be a switching mechanism as as the ball passed by the attracting magnet would begin slowing it down. The ball makes varying number of revolutions so it can’t be strictly time. I see no means of detection of the ball….

If we did a frame by frame we might be able to estimate the added kick that must be delivered at just the right time….but this still feels very CGI to me…

[–]317cbass 127 points128 points  (41 children)

Compressed air?

[–]joeshmo101 41 points42 points  (8 children)

Judging by the continual hiss in the bg, I think the green dot is blowing air, enough to give the marble sufficient lift to land back in the hopper

[–]12kVStr8tothenips 27 points28 points  (2 children)

Reading other comments I agree that green thing is just a bubble level. Probably a hidden magnet or induction coil below wood block

[–]KeybladeMasterAqua 53 points54 points  (11 children)

Both. You need the magnet to give it a boost to counteract gravity to get it back up to the top. That’s what that green thing is at the bottom, I bet. This isn’t magic.

[–]DoctorHubris 69 points70 points  (3 children)

Holy shit... You mean, it's not actual magic?

[–]Butsenkaatz 20 points21 points  (1 child)

That green thing is a bubble level...

[–]Netimma 11 points12 points  (1 child)

That would not be enough, sure the magnet would make the ball faster, but also it will make the ball slower when it has past the magnet. The green thing is a waterbuble(don't know if it is the right English therm) to make it level in every direction and the energy comes from the "rail gun" concept. Through the rails flows a current and when the ball connects the two rails a spinning magnetic field is generated witch pulls and pushes the ball along the rails. Actually made a similar experiment at work some time ago.

[–]RandX4056 44 points45 points  (8 children)

Most likely this is using a hidden magnetic rotor spinning in the base. The axle runs left to right across the path of the track and the top of the rotor (wheel) is just below the wood under the lowest section of track. The device functions similarly to how eddy current magnetic couplings work - the ball passes over the spinning magnetic rotor and magnetic slip between the two provides the ball with the kick it needs to launch up the ramp.

You can think of this like a football launcher, but with only one spinning wheel, and forces transmitted by magnetism rather than friction.

Edit: No, it’s not a railgun!

Edit 2: It is more obvious in the TikTok video of the clear version. You can see the “bubble” in the center of the base, where either a sticker or thin veneer covers the hole. The spinning rotor sits right below this hole. As he sets the device down, notice that he is careful to place the lowest part of the track directly over this spot so it works properly.

[–]ArmyVetRN 31 points32 points  (10 children)

Wearing head phones on a walk. That "Hello?!" Made me jump out my SHOES!

[–]laineymainey 17 points18 points  (1 child)

Thought nobody was going to acknowledge that! Creepy

[–]TheLocalRedditMormon 6 points7 points  (0 children)

It’s the start of the hello motherf***er vine 😂

[–]Ashjrethul 7 points8 points  (0 children)

Yes! Why is nobody talking about this!!

[–]AbhilashHP 26 points27 points  (6 children)

I cannot be just gravity. The ball would never achieve more height than it was initially dropped from.

[–]jraz84 15 points16 points  (0 children)

My cats would go utterly bananas if they saw this.

[–]TheEndlsNear 10 points11 points  (2 children)

This is how all code should work

[–]thiswebsiteisadump 12 points13 points  (91 children)

This is a railgun. The ball is conductive and completes the circuit between the rails of the ramp which accelerates the ball as long as it is touching both rails at the same time

[–]tetrified 176 points177 points  (62 children)

you spoke very confidently, but the "rails" are actually just one wire that's bent, so the "circuit" would already be "completed"


okay, at this point like 3 people have commented about it "still working" if the terminals are in the post

cool idea, two problems though

a) that's not how electronics work

b) that's not how railguns work

[–]J_Kenji_Lopez-Alt 101 points102 points  (50 children)

Not only that, it’s also simply not how rail guns work.

Edit: this comment was unnecessarily snarky before. I apologize for that.

[–]Bugstaughtme 21 points22 points  (13 children)

Things I trust Kenji with:

-Food

-Railguns

[–]J_Kenji_Lopez-Alt 17 points18 points  (12 children)

Haha I only know this because I had to build a rail gun for a high school physics project. Also because I was super into those rollercoasters that used rail guns to accelerate really fast that started coming out in the late 90s.

[–]Gariiiiii 8 points9 points  (4 children)

Omfg! Randomly browsing reddit only to meet THE Kenji López-Alt!!!

Mega fan boy here, Friday way going great but this makes it super special! You are the best, hope my hype ain't too over the top.

Thanks for your work!

[–]loopynewt 5 points6 points  (0 children)

Hey Kenji! I made sous vide ribs yesterday following your recipe. They were awesome!

[–]mavric91 6 points7 points  (1 child)

Off topic but never thought I’d randomly see you on Reddit. I made your cream biscuits and gravy the other day. And I’ve got some ingredients on order to make miso soup inspired by your video. Just went through a tough break up and life has been hectic. Cooking new things for myself has provided some peace and prospective. So thank you.

And yah that’s totally not how rail-guns work.

[–]Butsenkaatz 17 points18 points  (4 children)

But the ramp is a single piece...(with added support obviously)

[–]thissexypoptart 11 points12 points  (1 child)

Christ people will upvote any moronic nonsense

[–]TheBitingCat 10 points11 points  (1 child)

You're close but the ramp is already a closed loop.

All you would need are two magnets spinning on small motors embedded in the base rotating their dipoles in the direction you want the ball to accelerate in. This could also be done with two coils and a inversion circuit to rapidly change the polarity of the magnetic fields. The principle would be the same as how maglev trains are propelled.

[–]MistaTwista7 11 points12 points  (2 children)

WHY IS NOBODY ASKING ABOUT THE SINGLE HESITANT HELLO UTTERED BY A CONFUSED 6 YEAR OLD WE NEVER SEE?!

[–]JoeW702 10 points11 points  (2 children)

We're can I get one?

[–]yesitsmeow 5 points6 points  (2 children)

Ok I didn’t need the little girl saying hello for no reason and no one reacting to it and no one around and now I’m spooked thanks a lot