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@MotoCat91

11 ай бұрын

Hey dude, could you please try to reduce the flickering on your slow motion shots? Either that or just put up a warning before they play as it can be quite intense on larger screens.

@simonmultiverse6349

11 ай бұрын

Strange and interesting. :) I will keep an eye on this channel.

@jerrysstories711

11 ай бұрын

Okay, the followup for you & the crew to run is, calculate the optimal shape of the most extreme-behaving rattleback, 3D print it, and see what it does!

@namename3130

11 ай бұрын

The c in celt is like the c in cook

@jbtechcon7434

11 ай бұрын

@@namename3130 Go make some friends.

RIP to all rattlesnakes who had their backs stolen

@Bobodododo

11 ай бұрын

@@manthankashyap933ok

@MsScarletwings

11 ай бұрын

@@manthankashyap9330:30

@PhoebeJaneway

11 ай бұрын

They got their backs cut out with a spoon! (Alan Rickman 4ever 🖤)

@jbirdmax

11 ай бұрын

LMAO 😂😂😂

@Eyes0penNoFear

11 ай бұрын

​@@PhoebeJanewaywhy a spoon, cousin?

Never ceases to amaze me how a channel can consistently blow my mind with simple science experiments. I thought I was fairly knowledgeable when it comes to science and engineering.. Still awesome after so many episodes 😂

I'm reminded of how spinning a glass stone that's curved on one side and flat on the other (as used in gaming or in aquariums) will cause it to flip over. I've heard there were mushroom-shaped toys that would exploit this, with spinning them like a top resulting in them standing up on their stem.

@Eyes0penNoFear

11 ай бұрын

I have one of those toys. You have to get it spinning pretty fast, but when you do it stands on end. Physics is cool!

@norude

11 ай бұрын

tippe top ?

@drbobiwsky

11 ай бұрын

@@norude Yes.

@kjdude8765

11 ай бұрын

You can do that trick with a peanut m&m.

@katethegoat7507

11 ай бұрын

"as used in gaming or aquariums"..? What do you mean?

Next up : painting a celt stone the darkest black and shining the worlds brightest flash on it to make it spin

@jimlipscomb3236

11 ай бұрын

Let's see if it works in a vacuum chamber!

@DodgerX

11 ай бұрын

@@jimlipscomb3236 and don't forget to put liquid nitrogen on it

@TheVirtualArena24

11 ай бұрын

@@jimlipscomb3236 and test the durability by hydraulic press

I love the new camera, so clean :)

@TheActionLab

11 ай бұрын

Lol, thanks. I learn from the best! 😉

Dude I have a rock like this. Found it three years ago and made a necklace out of it. I love you for this. Sorry I'm coming on a little strong. Mine has a high iron content so I can spin it with a magnet on a mirror. I thought it had to do with the shape or magnet fields. Great! Thank You

I showed one to my high school physics teacher a few decades ago, and he jumped back, made the sign of the cross with his fingers, and yelled "Get that think away from me!" :-)

Fantastic! I've been fascinated by these things ever since I heard about them. Your demonstration with the bent and weighted spoons really drove home mechanism, well beyond any paper I've read or mathematics I've done. Thank you very much :)

@thefamily512

11 ай бұрын

Troll

@user-le6lt1jz9m

11 ай бұрын

@@thefamily512 Ok 🥱

To everyone correcting him: they are celt stones with an 's' sound, so it is accurate.

@thruyou

11 ай бұрын

Thank you. The comment section was driving me nuts.

@greytging

11 ай бұрын

If it's spelled Celt it's said with a C. In every usage of that spelling!! As it's a proper name of a people!! It's incredibly disrespectful to the extreme to try and take a culture's name and use it for something unrelated (and then pronounce it wrong) It doesn't matter what the person who named them thought, or what the general archeological consensus is. Imagine if archeologists tried to name something a German-Stone but want to pronounce it Jerry-Stone, and say that their pronunciation was correct. Not chill at all Maybe in the bad old days when uneducated archeological colonial forces were running around would that be fine, but not anymore. And not for a while.

@greytging

11 ай бұрын

You don't get to take a people's name, use it wrong, and claim you're right.

@thedenntist

11 ай бұрын

​@@greytging funny how you're the one who is wrong, claiming you are right.

RIP to all the folks who bent their mother's or wife's spoons

Thank you. I looked this up a long time ago and couldn't find a clear explanation. I got one of these in the 90s from Houston NASA museum.

So kool. Always wondered how these worked. As usual, you gave an excellent description, short and to the point. Love all your stuff.

It took me half-way through the video before I figured out it's not the composition of the celt stone, but its shape.

Always such interesting topics, and experiments I'd love to run myself but now I don't have to. This has become my fav channel on KZread!

my 6th grade science project (1st place district) in about 1986 was about these. I made a bunch of them with dental stone molded in a spoon, then hot glued a dowel at an angle and experimented with different weights glued to the dowel. I had some that would reverse 3-4 times or more.

You show some really neat scientific effects. Much appreciated

I really enjoy your informative, interesting videos. I also dig the black cutlery!

No spoons were harmed in the making of this video

You're amazing. I am always so excited to see what you do next. That cold aluminum with no friction was amazing!

Every time, you bring something new and fascinating

Awesome I'm gonna try to design some 3d printed rattleback fidgets now.

Uri Geller was misunderstood. He was just trying to make rattlebacks.

This kind of reminds me when you spin an egg, stop it, then release it, it will start spinning again.

@matthewdudael1931

11 ай бұрын

Never knew that

@queen-patches233

11 ай бұрын

an egg keeps spinning inside the shell when you stop the spin, thats why it will start to spin again

It is maybe taking energy from nutation and putting it into rotation?

Parents, hide your spoons! We haven’t seen a threat like this to our dining utensils since The Matrix.

Our guy just had dental work done, I can tell.

A rattleback sounds like a new snake in Australia

This action is actually used in the automotive field the camshaft has that designed into the camshaft to rotate the lifters

@gibble75310

11 ай бұрын

ohhh I was wondering what made them rotate!!

@michaelharrison1093

11 ай бұрын

I don't think that it is this action that makes the lifters rotate. If you look at the center line of the lifter it's slightly offset compared to the centre of the cam lobe. This offset results in the torque that rotates the lifter. Keeping the lifters rotating ensures that they don't get worn in one place.

@2strokeguru

11 ай бұрын

@michaelharrison1093 the cam lobes have a taper machined into them the lifters have a cone shaped machined into them causes rotating

The alternating movement made me think of the Wilberforce pendulum. Both systems share some similarities.

@cosmicraysshotsintothelight

11 ай бұрын

A cylinder spun on its long axis (not a short stout cylinder) will eventually de-stabilize and begin to spin (tumble) end over end.

@ttmylink

11 ай бұрын

@@cosmicraysshotsintothelight Are you talking about the The Dzhanibekov effect in space?

@cosmicraysshotsintothelight

11 ай бұрын

@@ttmylink Yes, in micro-gravity.

„There is no spoon”.

Now Buy me a Spoon mom Scolding me

That's so sick! The new camera is sharp af, too!

I looked at the shape, thought of it for a second, and figured out 2 components mentioned

Literally an ancient earthquake detection device

@demstartah2173

11 ай бұрын

Let you know when giants where coming for you 😅

I was fascinated by that when I was a kid.

You ain't gon have no spoons left at this rate. Great video

Learned something new today. Way too interesting.

If you could alter the amount of friction on one side so that it only rattles back when spun in one direction, that would be cool!

@johnshedIetsky

11 ай бұрын

how star

@ezachleewright2309

11 ай бұрын

​@@johnshedIetskyGod chose him.

This is the exact shape we need to convert the vertical motion of open ocean waves into rotational motion to harvest unlimited energy

Great episode thanks

That is cool, on the metal plate constant motion.

4:16 Now you have a rattleback but you don't have a spoon anymore.

Some similar stuff going on with rotating bodies unstable along one axis. Neat

Hi Action Lab. Fantastic video!!!!

U always amaze us!

Gonna be a bunch of mad moms out there now. Lots of kids bending all the spoons. Lol

If this were to be used for propulsion, what that be less efficient that our current methods?

I know how you keep finding cool ideas to report about, but I'm glad you do!

This is what powers alien spacecraft.

These could be the Mankinds first fidget

I did not think there would be another use of bent spoons!

@FedeG86

11 ай бұрын

Since I saw that I started to think in how many grandmothers will be complaining by finding their silver spoons twisted like those of the video. 🤭🤭

One of the best things ever to be produced in my home town. We would actually make a lot of the stuff in the shows. The best part was everything worked as described. Very rewarding for kids.. remember we had none of the distractions of today, so these things were great for us :)

mom: why is there a bent spoon kitchen

Would love to see an episode on how those angled spinning chairs you see on playgrounds work... I don't know what they're called, but you sit on them, and they start spinning faster and faster.

one of the best channels on youtube in 2023, 100%

What will happen if you spin counter clockwise??

Wife: Why all the spoons keep disappearing!

That is good content! I love that blue color 0:31!

@TheActionLab -- You may find this to be a similar phenomenon: The statue of Neb-Senu, believed to date to 1800 B.C., is housed in the Manchester Museum in England. in 2013 it became notorious for mysteriously rotating during the night.

Should have been a disclaimer about no rattlesnakes being de-backed. Apart from that, excellent as ever! I guess this is a form of energy transference, but what's so cool is that there are no extra components, it all takes place within the one block. Nice! ⭐👍

Hey, My name in Mark. I watch your videos for a while now and I like them. I usually do not place comments, but today I decided to do it. I noticed, that you spin the stone clockwise and than it stops and goes in opposite direction. However, when you used the vibrating table, the stone was going only in one direction: counterclockwise. Now: if you would spin the stone initially counterclockwise, would it still stop and reverse the direction, or is the counterclockwise direction a "natural" order of spinning of the stone, so as long as the energy (from either spin, shake or vibration) is delivered it will end up this way? Thank you for reading. Mark.

11 ай бұрын

It will always end up counterclockwise. When you start in this direction, it will not change. It is kind of the "natural" direction.

@Mark_Cywinski

11 ай бұрын

@ Ah. Thank you. I am an electrician and do not know much about physics other than related to my work. Things like this are intriguing to me. Now I had learned something new. :)

Bro. That hair is wild.

That is called “Keltin”

Why is the vertical vibration cause to spin counter-clockwise? Is it possible to make it clockwise?

@Randomness65535

11 ай бұрын

probably, if you reverse the topology of the stone

@sheenoreiki7843

11 ай бұрын

@@Randomness65535 theoretically you're correct, but once the heavier tip turns towards the epicenter I think it will auto change to turning counterclockwise

kids are definitely going to bend their parent's spoons

Fun fact: if you say "rattle back" 3 times in a video, you summon Tim from Grand Illusions. Lol

Sounds like a mechanism for seismic motor.

Fascinating!

Ancient earthquake detector?

If I had a green one i would call it Kryptonite and show off it's strange properties to friends and finally be a cool guy....but first need to use it to get friends.

Gonna be a lot of upset mothers discovering their spoon drawers have been pilfered, but i enjoyed how nonchalant he was with ruining their day.

@FedeG86

11 ай бұрын

I thought that but for the grandmother's silver spoons. 🤭

@Magnum3144

11 ай бұрын

Yes, those as well!!! Poor granny lol

You should make a video about the mustached bat's Doppler shift compensation

I do not understand how you have an indefinite stream of interesting content

I wonder if when Eminem wrote 'stop, wiggle a bit and get ready' he was talking about rattlebacks 🤣🤣

That one guy with the always spinning celt stone has the og beyblade

It's interesting how a simple oscilating motion can directly cause smoothe rotational motion just from the shape - I wonder if this has any practical applications? Like, instead of using pistons and connecting rods to convert oscilatting/reciprocating movement into rotational, we can just use some kind of rattleback-shaped mechanical component that can translate the vibrations of an IC engine? Or would this not be energy efficient? Genuinely curious here.

Could this be used to generate electricity beside a busy freeway?

I wonder if there is a way to scale this function down to say less than 20 nanometres to create small one way light traps

what could be the applications of this shape?

can you explain the wagon wheel effect

Looks suspiciously like a plane wing. Spin it fast enough to make it fly up?

‘Tis a witch

@planetphatness

11 ай бұрын

What kind of sourcery is this?

i love that new camera

What about spiining it to the left, not thr right?

It's strange that the name for these stones is pronounced "selts" when the word Celt describing the tribal peoples of ancient Europe is pronounced "Kelt". (Yes, the Boston Celtics are actually mispronouncing that name).

Pretty cool

got me to buy one

1- The celts would use this shape for their weapons so they could throw them at Romans and it would come back. Most of the time, without the Roman soldier. 2- They got this idea when they invaded Australia around 1700bc. A shaman kangaroo, gave them the schematics for the stone as a piece offering. Local celts would call it a "Kuntstone" but the name didn't stick and was lost to the sands of time. 3- They used this to know if they needed to perform exorcism. If the stone would spin the wrong way around, they would liberate their friends from the devil. None of this is true.

@Pystro

11 ай бұрын

The spaceships of the aliens that built the pyramids had this shape, too. That's how they were able to turn around and go back to their home planet when they were finished.

@X0verXDriveX

11 ай бұрын

@@Pystro No way! Let’s put on out tinfoil hats, we should talk in private!

Where can I get one?

Spin it counterclockwise

Interesting Celt stones

1:15 550 calories? That cannot be true. An adult needs about 2 million calories per day, which equals the energy in 3000-4000 meals.

I was waiting for you to explain how it only works when you spin it in one direction. Spinning it in the opposite direction just spins without rocking.

They are really nice

thats pretty cool

You could build a vibration engine with that

It will be the best earth quake detection toy

These were also known as "tates" and used for direction finding hence the phrase "he who has a tates is lost"..

Celt stones are pretty versatile as far as I know. It may take actual physics to calculate just how fast (or slow) it can turn.

@fookingsog

11 ай бұрын

How are they "versatile"???🤔...as in "multi-purpose"??? Clarification needed.

@znajdesposob

11 ай бұрын

@@fookingsog it means you can spin them on the table, but also use as a paper button. Every household should have few of these.

@fookingsog

11 ай бұрын

@@znajdesposob "paper button"???🤔

@BobbySacamano

11 ай бұрын

​@@fookingsogthey were used to make various tools, that's why they're found at archeological sites.

@trevorjohnson4965

11 ай бұрын

​@@znajdesposobpaper button?