Jaw-dropping Physics Toys/Gadgets 6

Подписаться 609 тыс.

Просмотров 1,1 млн

50% 1

Hi Everyone :)
Welcome back!
I get asked often: "Where did you get all this stuff?" My goal is to share the real magic of science and physics- and to this end I will update here (and in my store) suggestions on where to get some of these toys, kinetic art pieces, and scientific curiosities for yourself.
Purchasing items from the links on these pages will help support my IG page of science and wonder.
Buy physicsfun toys on : bit.ly/2MOjFET (Official websit 🇺🇸)
physicsfun toys on amazon :
amzn.to/36RRxt0
Follow on Instagram :
@physicsfun
This video contains :
👉🏻 Strandbeest Mini: A fully working model of artist Theo Jansen's Strandbeest kinetic sculpture which features Jansen's linkage- a unique leg mechanism which converts rotary motion of a crackshaft into smooth walking motion. Jansen's creations are usually a couple meters high and walk the beaches of the Netherlands powered by the wind. This version comes as a model kit that snaps together with no glue- a really fun project!
👉🏻 Andrew's Space Wheel: kinetic art desk toy from the 70s- the rotor will stay in motion for weeks, until the hidden 9V battery is depleted.
👉🏻 MetMo Cube: art from precision metalworking technology- a wire EDM (electrical discharge machine) can cut out two ovals from a 0.5 kg cube of solid stainless steel, and leave a gap of less than 0.05mm around the cutouts!
👉🏻 Theo Jansen's Strandbeest kinetic sculpture
👉🏻 Aristotle’s Wheel “Paradox”: How does the smaller attached disk travel the same length as the larger one if both disks only make one full rotation? Note the shorter path of the smaller disk, if rolled on its own. This beautifully made demonstration depicts an issue of geometry and motion that perplexed the best minds of humanity for 2000 years. The ancients knew the formula for circumference, and C=2πR for the large disk is clearly greater than C=2πr for the smaller- so how could the smaller disk, rotated once, still travel the distance of the larger one if attached? The great Galileo even offered a solution to the problem in his book Two New Sciences, where he approximated the situation as concentric hexagons and considered the limit as the number of sides increased. So what is the best answer to make sense of this situation?
👉🏻 Doubly Impossible Bottle: the newest seemingly impossible object in my collection from craftsman/artist Grant Wicks @thebottleologist.
👉🏻 Vintage Selenium Light Meter: selenium metal has a remarkable property- when exposed to light it will generate a small electric current. This General Electric light meter, made in 1930 with classic Bakelite case, still works and needs no battery.
👉🏻 Radiometer in Arylic: kinetic energy from light in this Eames era vintage Lucite block sculpture with encased radiometer.
👉🏻 Parabolic Mirror Array- @exploratorium: 360 mirrors arranged to reflect to a single focal point in this exhibit entitled “All Eyes on Me”.
🌟With special thanks to the Exploratorium!
👉🏻 IMPOSSIBLE BOTTLES @physicsfun
👉🏻 Uplift Kinetic Spiral: black walnut slats comprise a spiral kinetic sculpture under glass, mounted on precision bearings and powered by light.
Background music by : RU-vid Audio Library
1) Cosmic Drift - DivKid
2) Bonfire - An Jone
3) Icelandic Arpeggios - DivKid
4) Book The Rental Wit It - rage
5) Interstellar Mood - Nico Staf

Опубликовано:

13 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 737

@physicsfun Год назад

Hello Everyone! I bet many of you can’t answer this 02:28 Let see how many get this right! Where are you all from 🌍?

@zschmockouzsh7495 Год назад

I'm from Ohio.

@PuffyFis Год назад

From Philippines

@zschmockouzsh7495 Год назад

02:30 Rotation Inertia I guess.

@mickeyfilmer5551 Год назад

Hint: Use centripetal force ;) 😉

@mickeyfilmer5551 Год назад

From Wales, UK

@timothymallon Год назад

7:55 spin the puzzle in a circle with the axis being the middle of the puzzle where the marbles currently are. The centrifugal force will push the marbles away from the center, and into their respective holes.

@physicsfun Год назад

You are intelligent

@Ibadullah Год назад

@@physicsfun every person who sees puzzle vids knows that

@arshnabh Год назад

@@Ibadullah yes

@tiger_gaming290 Год назад

Or you could flip it upside down... (its not as fool proof as centrifugal force but 9/10 times both balls will roll the their slots

@Atharva61 Год назад

@@tiger_gaming290i don think flipping upside down will work

@zNEKOMARUz Год назад

Imagine just seeing those kinetic sculptures walking on the beach with nobody else around.

@noreannehveil335 Год назад

I had exactly the same thought ! If someone, right now, handed me a plane ticket for the Netherlands, along with week or so of paid lodgings, I might just spend the entire time walking the beaches, in the hope that I might see one of Jansen's fantastic constructions doing the same ! They are all amazing, but I think my favorite would have to be the piece that looks a bit like a wave came undulating right up out of the water, and decided to hang out on the dry side of the beach awhile. (The one, looking rather like a tipsy Dragon after a big night out, was a top choice as well. Who wouldn't crack a smile to see such a creature come bumbling along the sands, with that pronounced starboard list !)

@alanevery215 Год назад

How does having nobody else around, help, exactly?

@zNEKOMARUz Год назад

@@alanevery215 it looks creepier. Like it's a living creature rather than a sculpture someone put on a beach.

@kenhaley4 Год назад

Answer to question at 2:30. When attached to the larger disk the smaller disk is no longer "rolling". If a disk is rolling, the edge of the disk comes to a complete stop when it contacts the rolling surface. But no part of the smaller disk ever comes to a complete stop; It slows down at the bottom but is always moving forward ... just enough so that it stays up with the rolling larger disk.

@dismo021 Год назад

Quiz: spin the toy to make the marbles be on the tops of bolth ends

@kaidwyer Год назад

"bolth" I've already been annoyed by people pronouncing it this way, and here you are writing it!

@haraldbrunegomez8983 Год назад

Spin it.

@IFailedLife3064 Год назад

Bolth??? Don’t you mean both?

@erikez0584 Год назад

🍣

@Supervisor360 Год назад

Both, its both.

@bobcarn Год назад

Aristotle's Wheel.... this was a good mental exercise. To nitpick, the larger wheel isn't really two discs, it's one disc. It's like drawing a smaller concentric circle on any disc and claiming they're separate discs. Each disc can be infinitely divided into smaller concentric discs, but they're still treated as a single disc. Each disc is rotating at the same speed, but the smaller circumferences of the smaller discs mean their outer rotational speed are slower. They have different angular velocities. It's why the outer tracks of CDs and vinyl records are moving faster than the inner ones, and It's also how we get the Coriolis effect where northern hemisphere storms (hurricanes) rotate counterclockwise and southern hemisphere storms (cyclones) rotate clockwise. At least, without checking, that's what I'm going to settle on. I'm not a mathematician or physicist (just an enthusiast), so I'm just theorizing here.

@matheus.lifestyle Год назад

I have know idea whether you’re right or not, just amazed how beautiful the overall knowledge is. Fantastic. Personally, I believe ancient scientists were all-in-one, very curious in understanding the world without all the bs that exists nowadays.

@YASxYT Год назад

Yup, this is the real answer. The smaller one will always have less angular velocity, and thus will not rotate as much.

@rocky_wang Год назад

The Aristotle‘a Paradox: another RU-vidr talked about this. The key is, when the small disc is on the big disc, the smaller disc’s movement is a combination of rotation and translation, having an extra linear movement. It’s like a barrel rolling and gliding on the ice at the same time.

@b77vedantmore51 Год назад

Ans: rotate in ,it means apply torque force ..due to torque force, centrifugal force,both ball will go in opp.side

@physicsfun Год назад

Yes! centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.

@clmn6712 Год назад

The impossible bottles are cut with a glass cutter, then the objects placed in them. Glass has the unique property that when glued bacl together with superglue the crack becomes invisible and undetectable. The wood items are soft wood that can be squeezed like a sponge when soaked in water and have the nail inserted or pushed through the bottle opening, then it expands and dries out.

@thebanman2293 Год назад

interesting

@jwrosenbury Год назад

Most wood can be squeezed if steamed. Getting it back to size can be done but would be a challenge inside a bottle. It would take skill, but not be impossible.

@Marcara081 Год назад

No, the wood is just soaked and compressed for days. Then they're put inside the bottle where they slowly reform.

@clmn6712 Год назад

Yes for the wood. But other objects are put in by cutting the bottle and superglueing it back together

@gowdsake7103 Год назад

Nope your wrong the bottle does not need to be cut

@MormsNorm Год назад

The circumference of each wheel determines the distance it can travel within one rotation. Therefore, utilizing the larger wheel allows for a single rotation for both, so long as they share the same center point. That's why we have 24 hours at the equator as well as in Alaska.

@jacksonbrown1830 Год назад

i was trying to put it into words, ty

@Nothingbig1398 Год назад

I was just gonna say their connected, and therefore if you have to spin the large one once then you must do the same to the small

@user-yz1tx3cb3f 10 месяцев назад

@@jacksonbrown1830 0:51

@Ordnog Год назад

02:28 The smaller disk has a radius half of the larger disk, therefore it only travels half the distance of the larger disk. When it is attached to the larger disc the radius is doubled. Any smaller disc attached to the larger disc would only make one full rotation.

@sonariantutorials2438 Год назад

My answer but legable and well written, nice

@Ordnog Год назад

@@sonariantutorials2438 Thank you.

@WhiteUnicorn82 Год назад

@@sonariantutorials2438 You are taking the piss, right? 🤣 I don't think he noticed, but I certainly did! I suspect one needn't have studied physics to any advanced level to also realise this, but for some it's unquestionably painful to read.

@piad2102 Год назад

The smaller attached disc has become part of the bigger disc. You can say they infused and so it uses the same law as a complete disc, where any point on a diameter spins same distance.

@metarcee2483 Год назад

2:28 they're attached. So the movement of the smaller circle also moves the bigger circle, like the axle on a tire.

@physicsfun Год назад

A hint towards one modern explanation below. ✏Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.

@akg4470 Год назад

@@physicsfun yeah I also think the same way ! And I wanna add a little bit to it, that the angular displacement is involved over there but not the way it apparently looks. Actually since the smaller circle in first case is not a free body so the displacement should be considered of the larger circle and to compensate that the sliding and rolling is happening at the same time 😁

@kaylaa2204 Год назад

3:04 This isn't really a paradox. The only reason circumference of a wheel equals distance traveled over single rotation is because thats the surface it's rolling on If the smaller wheel is affixed to a large wheel, of course it's going to travel the distance of a larger circumfeance Kinda surprised this confused Aristotle actually. The only reason it would confuse you is if you didn't think about why the distance was equal the circumferance

@christophermoore6110 Год назад

Yeah, I don’t get how it’s confusing

@amildgamer2000 Год назад

I would like to keep in mind what we consider "common sense" might seem like godly knowledge to ancient people

@christophermoore6110 Год назад

@@amildgamer2000 but it’s not a paradox if we understand it?

@amildgamer2000 Год назад

@@christophermoore6110 I never claimed for it to be a paradox. All I was saying is that simple knowledge is a LOT more complex then it used to be Edit: I'd like to clarify I don't even know if Kayla A's claim about Aristotle is true, as well as I know jack shit about jack shit, but my general point is what seems to be the "obvious" to us is really the result of AMAZING knowledgeable discoveries by humanity over the course of, well, lol humanity (Psst: Mind the grammar)

@lamaidalaakapinkcrocodile7527 Год назад

oh, i understand now, you a genius.....

@nikmrn Год назад

3:00 The wheel size that you are turning with the ruler stays the same, but the wheel that rolls on the "wall" becomes shorter, so that the distance the small wheel moves because of the ruler is now the same to the length that is travelled

@sharadkumarsingh4802 Год назад

Becomes shorter? Can someone pls explain this paradox in detail I am unable to get my head around it 😅

@nikmrn Год назад

@@sharadkumarsingh4802 It is basically explainable with just the formula for the circumference of the 2 circles: If the radius gets bigger, the circumference of course also does. And because in both the experiments you turn a smaller wheel (with the ruler), but one of them is attached to a bigger one, the bigger one of course covers more distance. I unfortunately don't know how to explain it, but I hope that helped

@sharadkumarsingh4802 Год назад

@@nikmrn I just figured it out.. when spinning both wheels of different radii one of them has to "slip" in order to cover the same distance.. don't know why everywhere on the internet the explanation is overcomplicated.. (correct me if I am wrong btw)

@nikmrn Год назад

@@sharadkumarsingh4802 Exactly

@MrZoot42 Год назад

When running the small wheel on its own against the edge 1 inch of travel equals 1 inch of circumference. When running inside the larger wheel 1 inch of travel against the edge by the larger wheel is less than 1 inch of circumference on the small wheel. The small wheel will rotate consistently in ratio to the large wheel at a reduced ratio to the edge.

@loughkb Год назад

Regarding the balls puzzle at the end. Spin it. Centrifugal force will push both balls up the ramps. Easy.

@physicsfun Год назад

Centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.

@Barnaclebeard Год назад

I was crazy about the Strandbeest 20 years ago!

@circomnia9984 Год назад

For those curious to know, the first so called Strandbeest, literally translated from Dutch, basically means BeachBeast. Strand means beach, and beest means beast, and I think it sounds cooler in English.

@YAWN.... Год назад

Aww, how cute...

@Engie_Boi Год назад

More like beach animal but yeah

@rubyandcoco583 Год назад

2:31 Ans: circumference of the wheel was short so took more distance

@scienceworld4467 Год назад

Physics is not a subject . THE KNOWLEDGE THAT SHOWS THE MAGIC OF UNIVERSE.

@physicsfun Год назад

Physics is magic that works

@spongypancake Год назад

Natuurkunde beschrijft de echte magie van het universum. :)

@eventhisidistaken Год назад

bottle with lock and deck of cards - my guess. The deck does not have cards in it and is not cardboard either, but is plastic with springs inside. Just squeeze it together and drop in through the hole. The padlack was partly assembled in the bottle. If the U were removed, the rest of the lock could fit sideways through the hole. Then assemble the U and the lock inside using tools. It doesn't have to function ...can just glue the U in.

@xelasomar4614 Год назад

The bottle puzzle with the wood pieces....... My somewhat educated guess: You soak the wood in liquid until it becomes flexible, "squeeze" the piece in, with thin long tools help the wood return to its original form (it wants to do that by itself, but you help it along for a more "straight" look), then let it dry again. Ps. There's a particular liquid that wood workers use to make wood flexible without staining/discoloring or bloating. If any wood craftsman out there.....

@TheNamesSnek Год назад

you missed the nail in the wood

@joejoejoejoejoejoe4391 Год назад

They steam the wood, we have a steamer at work, the carpenters made an "E" out of wood, steamed the #### out of it, compressed the end in a vice until there was enough space to knock a nail in the centre prong of the E, then just left it to resume its original shape, I guess if you compressed the whole thing in a vice you could fit it in a bottle.

@xelasomar4614 Год назад

@@TheNamesSnek ...or, you pre drill the hole for the nail, compress the wood lengthwise to get it in the bottle and keep it vertical, "open" it up, with a needlenose pliers, or something like that, you force the nail in, then lay it down.

@GregConquest Год назад

@@xelasomar4614 Or you hold the wood in the center of a glass-fusing machine and weld the two glass bottle halves together around the wood (or fuse just the bottom where you couldn't see the seam.)

@xelasomar4614 Год назад

@@GregConquest Interesting, yes, I've seen glass bottles and other things that looked to be made of different parts, but I thought that they casted the glass in molds, and the "seam" visible in these artifacts were where the 2 parts of the mold came together to form the whole. I did not know about glass fusing machines, I didn't even know that these existed or were possible, but I guess with enough heat... Learned something new, thank you. One thing though, l always can see the "seam" as opposed to glass blown. Are there fuse machines that don't leave a seam?

@jakuburlich3022 Год назад

Fizyka opisuje prawdziwą magię świata

@vincentgallantcote9821 Год назад

La physique décrit la vraie magie de l'univers

@bb0948 Год назад

C g 3 well w az hahahai annnn n no nnbbbbn7

@squeakychairproductions6715 Год назад

You soak the wood in water, squeeze one side down while still "flexible" and place the nail in place, Then force the flexible wooden puzzle with nail into the bottle. as it dries the wood puzzle will restore itself to its original shape. Simple.

@physicsfun Год назад

You are intelligent

@robhemp5548 Год назад

All radial distances in the big wheel make one revolution. The D=2pir only relates to the big wheel's perimeter.

@leafloaf5054 Год назад

Physik beschreibt die echte Magie des Universums.

@edhuber1702 Год назад

6:13 Maybe turn handle 90deg(about horiz axis), then simply extract cork-et-al.

@KittenRaptor Год назад

I just realised how the wooden arrow in a bottle was done. Assuming you start with a bottle, and there is no shenanigans such as shaping the neck after placing the objects, or shrinking the bottle in some way. And no breaking of your objects into fragments that you simply glue back together, or usiing fake objects that are inflated or explanded in some way rather than solid. My understanding of the Impossible Bottle art form is that it is not merely a trick where you just fake it, it is all about the skill of getting large items inside a pre-existing bottle. Some of the masters of the art have been known to assemble one from random pocket items in under an hour as a gift. I intentionally haven't looked too deeply into the hows because the mystery is intriguing, and its nice to respect the skill involved. Spoiler below: You make your bottle, and place it over a growing branch of your chosen tree. Once there is enough wood you simply cut it off, and very carefully whittle the branch into your arrow shape - the simplicity and roughness of the arrow shape lends credence to this idea, and you could place the washer on the growing branch in advance. In the case of the other objects, again assuming you have the bottle first and must place the items inside, it is generally a case of very carefully breaking your item down into its smallest parts and assembling them inside the bottle, like the classic ship in a bottle. Cards and photographs will easily roll up and unroll again insde. Theoretically you could embed a nail in growing wood an have it appear to be impossibly nailed in. The corkscrew only requires you to drop in the handle and screw and glue them together while insde - the rivet is a clever trompe l'oeil, similarly the staples and screws on the picture frame. Note that the padlock without its bolt will fit sideways through the neck. The sealed pack of cards, I have no idea, short of unsealing it and just adding a tiny amount of glue to reseal it afterwards The hole in the side of the box and the conveniently placed label suggests a sneaky bit of artifice. "Sometimes magic is just someone spending more time on something than anyone else might reasonably expect."

@loughkb Год назад

Wood like Pine becomes elastic when you steam it. Put the wooden arrow in boiling water for an hour and you can squeeze the arrow head down to fit it through the neck. As it dries, it springs back to it's original shape. I've made a bunch of wooden 'impossible' things for my son when he was young.

@greenaum Год назад

@@loughkb Yup, there's videos on RU-vid showing it.

@clamwok Год назад

no, these bottles are cut.

@nickwildcard627 Год назад

I know how to do the playing cards one if you’re interested. Use a razor blade to cut through the glue holding together the plastic, seal, and box. Place the plastic in the bottle, flatten and roll the box and insert, then glue shut the bottom of the box. Roll each card and insert into the box before gluing the seal back on, and finally glue shut the top of the plastic wrapper. No trickery, just precise disassembly and reassembly to create a work of art.

@LeszekSlowinski Год назад

1. Catch it. 2. Say it. 3. Fizyka opisuje prawdziwą magię wszechświata

@daniel06498 Год назад

The first one i have seen that one in real live and than its even more impressive

@DNNYMc-ux7fk Год назад

2:28 The small circle with the larger circle has more surface area attached to its perimeter. more surface area = farther distance per rotation. The large circle and the attached small circle complete on full rotation simultaneously, so it's as if the small circle is "riding" in the large circle. Tennessee, USA

@ronhipschman Год назад

Wonderful as usual! Please never stop.

@nicholascrow8133 Год назад

On the bottles, from google: "They are mass-produced using glassblowing techniques, by placing a coin inside a semi-molten glass cup, and then reshaping the open end into a narrow neck and mouth, completing the bottle."

@StYxXx Год назад

With wood like the first one, the nail and the arrow it's even easier: With heat and moisture wood can be bended :)

@sonariantutorials2438 Год назад

The smaller disk, being attached to the larger, moves with it a farther distance that it ordinarily would, it is not functioning as a smaller disk, but rather like the enterior part of the larger one.

@physicsfun Год назад

Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.

@ekris9837 Год назад

Физика описывает истинную магию вселенной.

@ППВА-м7э Год назад

жаль сердечко не поставил

@fabianreis3946 Год назад

Spin it! It's like lots of marble puzzles with the same problem, make them all go to the edge!

@AjitSingh-ev9sy Год назад

Physics is always awesome for awesome mind.

@teschvalleyrailroad Год назад

My grandfather made a homemade puzzle with the marbles in the early 1980's. I have been driving my coworkers crazy for years with that puzzle. I work with Mechanical, Electrical, and several other Engineers. When they see the solution, they just shake their heads. 😀 I won't give it away. 😉

@westonding8953 Год назад

Will you give the puzzle?

@teschvalleyrailroad Год назад

If you set your mind "spinning," you'll figure out the puzzle. 😀

@xl000 Год назад

None of your coworkers thought of spinning the thing around the vertical central axis ? There is at least another way, depending the exact geometry of the slope near the center ( starting point of the marbles)

@billberg1264 Год назад

I think the most interesting thing about Aristotle's wheel "paradox" is the insight it gives into comparative infinities. The behavior of the wheels can be used to prove that there are exactly as many points along the circumference of the small wheel as there are along the circumference of the big wheel. Specifically, there are infinitely many points along both.

@hridayshrimal3525 Год назад

The shorter disk is moving faster than it is rotating,ie, it has more speed than equivalent angular speed

@UNUSUALUSERNAME220 Год назад

Just leave all that stuff in the bottles in a room with a Crow. It'll figure it out!

@1.4142 Год назад

Maybe the objects were formed around the objects with a fireproof cloth that was later removed

@pitviper7924 Год назад

The center point of the circles that has no circumference also travels the same distance. It is a matter of both the smaller circle and center point are free loaders of the larger circle. They can't do it alone.

@james-m.gauthier-yr1sc Год назад

The wheel paradox is simple I’m a kid and I know. The faster the wheel spins the farther the ruler goes. The small one spins (makes one rotation) faster so the ruler is pushed more. 3:06

@verdiblue Год назад

3:15. timber is shaped and then soaked till pliable. once the nail is in the whole thing is comptressed then placed in the bottle. as it dries out it regains its shape

@oktoplus8736 Год назад

Physik beschreibt die echte Magie auf dieser Welt

@emmanuellaurens2132 Год назад

Aristotle's Wheel: after one rotation, every point of the wheel ends up having moved the exact same distance in the exact same direction, a translation movement. This is combined with a rotation movement, but but the fact that the outer edge 'rolls' over a smooth surface is only a distraction to what is really going on. It means there is a relation between the speed of the rotation, the diameter of the wheel, and the translation, but it does not change the fact that what is going on is a wheel moving in translation while spinning on its axis.

@Tywno Год назад

Natuurkunde beschrijft de echte magie van het universum.

@physicsfun Год назад

Natuurkunde is het beste. Wat ik zo leuk vind aan natuurkunde, is dat als je leert, je niet echt antwoorden krijgt. Je krijgt gewoon betere vragen.

@Tywno Год назад

@@physicsfun Ik ben verrast! Uit je profiel blijkt dat je in de US zit, maar je spreekt gewoon Nederlands. Of heb je stiekem Google Translate gebruikt 😉?

@physicsfun Год назад

Google Translate 😁

@TheSRDR79 Год назад

4 the last one: rotation from the center, with the help of centrifugal force both balls will go their places.

@physicsfun Год назад

Yes! centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.

@INACTIVE12678 Год назад

The one with the two discs is easy, the reason it travels that distance with the larger disc is because it is acting as part of that disc, the larger just having a larger diameter means it travels farther overall

@drhkleinert8241 Год назад

Fun today but a few hundred years ago it was the highway to be burned by the church..."Burn the Wizard!"

@androidlogin3065 Год назад

2:32 The distance travelled depends on the circunference, one 370º turn is 2*Pi*Radio, so abigger radio causes a bigger circunference and a bigger distance travelled.

@physicsfun Год назад

A hint towards one modern explanation below. ➡ ✏Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.

@marilynashby4827 Год назад

Physik beschreibt die wahre Magie des Universums

@physicsfun Год назад

Physik ist das Beste ❤️. Was ich an Physik liebe, ist, dass man beim Lernen nicht wirklich Antworten bekommt. Du bekommst einfach bessere Fragen.

@adamb89 Год назад

Those MetMo cubes are actually cut from two different pieces of metal. That's the only way they can achieve such a small gap between the cutouts and the holes. The gap is less than half the thickness of a human hair.

@ВикторСамбуров-щ9з Год назад

Легко! По принципу шестереночной передачи. Разница в диаметрах кружков.

@cseonlineclassesmalayalam Год назад

Thank you for this amazing video❗

@Toonsifer_and_Emerond_Official Год назад

The info you gave us on 2:27 broke my brain

@vincentgallantcote9821 Год назад

La physique décrit la vraie magie de l'univers 😊

@physicsfun Год назад

Le monde entier est gouverné par la loi de la physique.

@Imtheonlycobra Год назад

Answer to the last quiz:rotate the puzzle as fast as possible.

@physicsfun Год назад

You are intelligent Centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.

@KndleYt3071 Год назад

You have to spin mechanism to make both balls go on opposite direction because if you’re spending with two substances and let go, the substances will go backwards

@petercooper2387 Год назад

Say small disc is one inch diameter. In direct contact with flat surface it will travel 3.142 inches in one revolution. When attached to larger disc, say 2 inches in diameter, it will travel 6.284 inches in one revolution as the distance travelled is dictated by the larger discs circumference being in contact with the flat surface.

@masterxyr Год назад

Bottle 1 with special tweezers , begin by inserting the rolled up card pack. assemble it into its shape. Rool plastic cards into the bottle and insert in the pack. Close pack. I've had pad lockis where the whole ring comes off, so insert pad in parts, assemble (notice that pad in pieces seems to fit through bottle neck). bottle 2 assemble and build everything inside the bottle with the patience of a saint and hundreds of hours. The smaller bottle seems like half a bottle (longitudinally) and while still warm can be bent into a roll bottle 3 the screw seems long enough to be put inside closed, then opened and then pulled as far out as possible with screw sticking out (as far as I know, the screwmaybe all the way in the cork, meaning it's very long) bottle 4 not sure how malleable soaked wood is but maybe that's how it was put in. If you put a washer through a live branch, then just wait and in a few years saw it like this.

@blazing-spirit4079 Год назад

Or just break it for speed run times

@TheRattleShark Год назад

Aristotle's Wheel is easy, not sure why this is a paradox at all. The circumference of the larger disc covers more ground in one complete rotation than the smaller one. The smaller disc is just sitting in the middle of the larger disc and is essentially part of the same disc. It is the larger disc that is covering the ground and the smaller disc is just hitching a ride on the same rotation. Took me the duration of the video to figure it out and not 2000 years, I'm pretty sure smarter people than me in history figured this out just as fast.

@HellFiW Год назад

Fysik beskriver den rigtige magi i universet. Done!

@vancemccarthy2554 Год назад

2:30. Surface contact matters. The center wheel could be a rod and the result would be the same.

@h7opolo Год назад

aristotle's wheel paradox seems intuitive enough. it's almost offensive to be suggested as a paradox.

@physicsfun Год назад

A hint towards one modern explanation below. ✏Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.

@mr.kiwiii4421 Год назад

I just love it when they tried to make it seamless for the bottle because you can see where they sealed it together

@shanerorko8076 Год назад

Really? I cant see any cracks?

@nomojo1110 Год назад

The technique to get the nail in place is also used to get the entire piece into the bottle. Porous wood readily absorbs moisture. Soaking overnight allows the block at each end to be gently compressed with clamps. This allows the nail to be driven through the 2 centre blocks. Once the nail is in place the entire block is compressed to slide through the bottle-neck. Compressing the wood cells wont damage them so as it slowly dries it re-expands - like a rubber ball. Cheers!

@VeteranVandal Год назад

The answer to the "paradox" is in tracking the motion of all points until the center of the circle. What gets clear is that the rotating peripheral point travels a lot more distance than the center does. To simplify the argument, let's say turn of the circle covers the distance d (this isn't actually important for the argument, but it is easier to visualize with 1 turn). The center does a 1D motion of a distance 2*pi*r = d, but the peripheral points move in 2D and waste motion in the other dimension by the cycloidal amount (lemme do the math real quick) 8r - 2*pi*r = 2r*(4-pi). When r -> 0 the movement waste goes to 0. So the points aren't in fact traveling the same distance, which explains the pseudo paradox. You aren't moving the same distance, you are just tracking the wrong distance. Each point in the solid circle travels a different distance depending on how far from the center such point is.

@WhiteUnicorn82 Год назад

"Physics describes the real magic of the world", apparently.

@BI4ck_J Год назад

A física descreve a magia real do universo :D

@GabGames11 Год назад

=D outro brasileiro/ português

@BI4ck_J Год назад

@@GabGames11 opa eae

@lll9416 Год назад

All the wood based puzzles work by soaking the wood in water and compressing it to fit the opening.. As it dries it regains its shape and looks impossible to remove.. tuh dah!

@DeCobyyy Год назад

Fysica beschrijft de echte magie van het universum

@physicsfun Год назад

Natuurkunde is het beste. Nog zoveel onbeantwoorde vragen. Net als je denkt dat je het weet, word je weer verrast ❤️

@robbiebuckley819 Год назад

The Aristotle wheel, if you rotate any wheel one full rotation it will travel a linear distance equal to the circumference of the wheel. It doesn't matter whether you drive the wheel on the outside, or by an attached smaller wheel as in this case. The optical illusion part is that the *ruler* seems to move further driving the combined wheels than driving the small wheel. This is simply because the centre of the large wheel moves twice as far as the small wheel, and the ruler stays in contact with the small wheel. The wooden arrow and nail holder are boiled in water and compressed, slid into the bottle, and steamed or boiled in the bottle to reabsorb water and return their original shape. I have made the impossible nail many times at home using soft pine. Corkscrew and picture frame are assembled in the bottle, easy with magnetic connectors, harder if they are glued but still possible. Pack of cards is probably empty. Hasp of lock is glued into the body or disassembled and reassembled in the bottle.

@davidsovar4606 Год назад

Fizika opisuje pravu čaroliju svemira❤️

@c6nn0r68 Год назад

My guess on the Aristotle wheel relates to how the inside of a circular track is shorter than the outside edge. I think it has to do with the different wheel sizes.

@shanerorko8076 Год назад

The pack of cards is filled with something other than cards, the lock is easy. The picture frame is easy.

@synoptic4753 Год назад

Yeah, that walking movement, I remember, that s how broom shrubs walk over soapy water poodles on the floor while washing when they dont have the stick handle in. It s childhood images. Is it from that app Evolution, now off?

@shreeomkumar3414 Год назад

this shows how physics is interesting if we understand properly

@pedz23 Год назад

The wood is soaked in water then compressed and dried. Then soaked again to return to it's shape

@CaLLsignM0rGe Год назад

in the aristotle wheel paradox i belive that since one of the wheels is larger and i takes up more area it can trale to the end of the track

@CosmiK4RL Год назад

Challenge for the video: I think shaking would work, idk i haven't learned physics in class

@physicsfun Год назад

Not shaking, but spinning Centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.

@robley1108 Год назад

Physik beschreibt die echte Magie unseres Universums

@rhetoricalquestion6009 Год назад

7:38 Looks like a marble variation of "Bubble Trouble Puzzle" • Mar 5, 2022 • physicsfun. 1:24 MetMo Cube -- expensive, but looks so pleasing!

@dannydetonator Год назад

I can make it for £20 with wire EDM. And 200 for arrangement with my supervisor..

@believein1 Год назад

Regarding Aristotle’s puzzle, your rim now has a tire.

@dhruvalparmar4361 Год назад

3:09 it's called the angular velocity. The speed of the wheel is different at every points !

@Tercasific Год назад

the simple answer of aristotle's wheel paradox's answer is that rotate earth 1 time one a surface and rotate a foot ball and then tell me which one will cover more distance, thats the base, now to the final part, the smaller circle is still attached to the bigger circle so its still concidered to be a bigger circle, it doesn't matter if you spin a cirlce from it's edge or the middle

@poweronegaming3681 Год назад

First wheel having another bigger whee and so it moved more distance

@tangudusrikar765 Год назад

Actually smaller wheel placed on larger wheel at center, smaller and larger wheel need one rotation to complete distance but if we place smaller wheel on base it takes more than one rotation to complete distance and i am from srikakulam,andhra,india

@physicsfun Год назад

A hint towards one modern explanation below. ✏Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.

@Llanowar_Kitten Год назад

There’s a neat demo of the solution using rack-and-pinion gears, which can roll, but not slip! Once the slipping is eliminated, the solution is pretty obvious.

@mr_jake.y8348 Год назад

The last one you turn it around fast.

@elliemcmullen7662 Год назад

Physics describes the real magic of the universe in your language 👀❤

@spencerp_6067 Год назад

Physics describes the real magic of the universe

@cocomelon6373 Год назад

Natuurkunde beschrijft de echte magie van het universum

@nikhilkhatri4447 Год назад

7:48 i think a non uniform but continuously increasing downward acceleration can do it

@swampydude1356 Год назад

the last one is a classic spin it to solve puzzle

@VeteranVandal Год назад

The last puzzle, as usual, is spin to win. But if they are magnetic, you can magnet to win.

@jacksonbrown1830 Год назад

one of those bottle was obviously cut in half. "high certainty" lmao

@jj-zy6gc Год назад

Ok. That definitely goes in the square hole.

@stepivi5968 Год назад

Физика описывает настоящую магию вселенной

@physicsfun Год назад

Физика лучше всех. Еще столько вопросов без ответов. Просто когда вы думаете, что знаете, вы снова удивляетесь.

@rikmetz4720 Год назад

Aristotle wheel paradox. One of the disks slides a bit forward, but it is so close to is road, that it is difficult to see. Just like slowly hand braking while cycling, at first you go a little bit faster than you're supposed to go when your wheels start rotating slower.