Jaw-dropping Physics Toys/Gadgets 6
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- čas přidán 21. 10. 2022
- 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
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@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 : CZcams 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 - Věda a technologie
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 🌍?
I'm from Ohio.
From Philippines
02:30 Rotation Inertia I guess.
Hint: Use centripetal force ;) 😉
From Wales, UK
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.
You are intelligent
@@physicsfun every person who sees puzzle vids knows that
@@Ibadullah yes
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
@@tiger_gaming290i don think flipping upside down will work
Imagine just seeing those kinetic sculptures walking on the beach with nobody else around.
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 !)
How does having nobody else around, help, exactly?
@@alanevery215 it looks creepier. Like it's a living creature rather than a sculpture someone put on a beach.
Physik beschreibt die echte Magie des Universums.
The hardest part of making a perpetual toy is finding where to hide the battery
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.
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.
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.
Yup, this is the real answer. The smaller one will always have less angular velocity, and thus will not rotate as much.
Quiz: spin the toy to make the marbles be on the tops of bolth ends
"bolth" I've already been annoyed by people pronouncing it this way, and here you are writing it!
Spin it.
Bolth??? Don’t you mean both?
🍣
Both, its both.
The Aristotle‘a Paradox: another CZcamsr 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.
Natuurkunde beschrijft de echte magie van het universum. :)
Physik beschreibt die wahre Magie des Universums.
I was crazy about the Strandbeest 20 years ago!
Wonderful as usual! Please never stop.
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.
My answer but legable and well written, nice
@@sonariantutorials2438 Thank you.
@@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.
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.
interesting
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.
No, the wood is just soaked and compressed for days. Then they're put inside the bottle where they slowly reform.
Yes for the wood. But other objects are put in by cutting the bottle and superglueing it back together
Nope your wrong
the bottle does not need to be cut
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.
i was trying to put it into words, ty
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
@@jacksonbrown1830 0:51
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.
"Physics describes the real magic of the world", apparently.
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
Becomes shorter? Can someone pls explain this paradox in detail I am unable to get my head around it 😅
@@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
@@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)
@@sharadkumarsingh4802 Exactly
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.
Physics is always awesome for awesome mind.
Ans: rotate in ,it means apply torque force ..due to torque force, centrifugal force,both ball will go in opp.side
Yes! centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.
Physics is not a subject . THE KNOWLEDGE THAT SHOWS THE MAGIC OF UNIVERSE.
Physics is magic that works
1. Catch it.
2. Say it.
3. Fizyka opisuje prawdziwą magię wszechświata
Just leave all that stuff in the bottles in a room with a Crow. It'll figure it out!
Physik beschreibt die echte Magie auf dieser Welt
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.
Aww, how cute...
More like beach animal but yeah
Thank you for this amazing video❗
2:28 they're attached. So the movement of the smaller circle also moves the bigger circle, like the axle on a tire.
A hint towards one modern explanation below.
✏Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.
@@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 😁
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
Yeah, I don’t get how it’s confusing
I would like to keep in mind what we consider "common sense" might seem like godly knowledge to ancient people
@@amildgamer2000 but it’s not a paradox if we understand it?
@@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)
oh, i understand now, you a genius.....
Fun today but a few hundred years ago it was the highway to be burned by the church..."Burn the Wizard!"
The first one i have seen that one in real live and than its even more impressive
this shows how physics is interesting if we understand properly
All radial distances in the big wheel make one revolution. The D=2pir only relates to the big wheel's perimeter.
Spin it! It's like lots of marble puzzles with the same problem, make them all go to the edge!
Awesome as usual
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.
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
The info you gave us on 2:27 broke my brain
Regarding the balls puzzle at the end. Spin it. Centrifugal force will push both balls up the ramps. Easy.
Centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.
6:13 Maybe turn handle 90deg(about horiz axis), then simply extract cork-et-al.
Fysik beskriver den rigtige magi i universet. Done!
2:31
Ans: circumference of the wheel was short so took more distance
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
Regarding Aristotle’s puzzle, your rim now has a tire.
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.
The last one you turn it around fast.
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
Natuurkunde beschrijft de echte magie van het universum.
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.
@@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 😉?
Google Translate 😁
Physik beschreibt die wahre Magie des Universums
Physik ist das Beste ❤️. Was ich an Physik liebe, ist, dass man beim Lernen nicht wirklich Antworten bekommt. Du bekommst einfach bessere Fragen.
the last one is a classic spin it to solve puzzle
Maybe the objects were formed around the objects with a fireproof cloth that was later removed
Beautiful
Physik beschreibt die echte Magie unseres Universums
Fizyka opisuje prawdziwą magię świata
La physique décrit la vraie magie de l'univers
C g 3 well w az hahahai annnn n no nnbbbbn7
The shorter disk is moving faster than it is rotating,ie, it has more speed than equivalent angular speed
The pack of cards is filled with something other than cards, the lock is easy. The picture frame is easy.
Physics describes the real magic of the universe
Natuurkunde beschrijft de echte magie van het universum
Ok. That definitely goes in the square hole.
that really is a mindbugger how that bottle can be so expensive :O
Answer to the last quiz:rotate the puzzle as fast as possible.
You are intelligent
Centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.
Simple, invert the toy so that both are on top😅😅
Fizika opisuje pravu čaroliju svemira❤️
Физика описывает истинную магию вселенной.
жаль сердечко не поставил
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.
damn i always thought they were called sandbeasts
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.
You are intelligent
I just love it when they tried to make it seamless for the bottle because you can see where they sealed it together
Really? I cant see any cracks?
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!
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."
With wood like the first one, the nail and the arrow it's even easier: With heat and moisture wood can be bended :)
Bro the first one is legit the founding titan
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.
The last puzzle, as usual, is spin to win. But if they are magnetic, you can magnet to win.
The two discs do not travel the same distance. No matter where you measure the larger wheel, it makes a larger distance.. measuring on the smaller "cog" on the large wheel will still get you the large wheel's full travel. Measuring the small wheel on it's own is simply a smaller cirvcumference.
At least that's how it seems to me...
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.
one of those bottle was obviously cut in half. "high certainty" lmao
"Fysik beskriver den riktiga magiken i universum."
Fysiken är bäst❤️. Det jag älskar med fysik är att när du lär dig får du inte riktigt svar. Du får bara bättre frågor.
the answer to the aristotles wheel paradox is actually really simple. think of a line of motorcycles traveling in a circle the inner bikes travel slower than the outer bikes but also cover less distance than the outer bikes the same principle applies here the inner circle is connected to the outer circle as such the inner circle will travel the same distance of the outer circle at slower speed and shorter rotational distance.
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.
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
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!
Was the mouth of the whiskey bottle stretch with heat and the resized to it's original size
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
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
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. 😉
Will you give the puzzle?
If you set your mind "spinning," you'll figure out the puzzle. 😀
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)
3:08 it's like bicycle gears
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?
Very good
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.
Physics décrit la vraie magie de l'univers
First wheel having another bigger whee and so it moved more distance
A física descreve a verdadeira magia do universo
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.
Consider the physics of rolling without slipping to the case where rolling and sliding occur simultaneously.
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.
Perfect eg.s it's not magic it's science
The wood is soaked in water then compressed and dried. Then soaked again to return to it's shape
3:09 it's called the angular velocity. The speed of the wheel is different at every points !
The larger cylinder is the source of the movement, therefore the smaller cylinder will move slower. I'm just going to be dumb, alright?
Challenge for the video: I think shaking would work, idk i haven't learned physics in class
Not shaking, but spinning
Centripetal acceleration and rotational kinetic energy will raise the potential energy of both marbles simultaneously.
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."
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.
@@loughkb Yup, there's videos on CZcams showing it.
no, these bottles are cut.
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.
I've seen this before and you just spin it