9 Objects That will Hurt Your Brain!

[@physicsfun]

I think you might like these gadgets! You can leave a heart in the comment for support ❤️

[@ELIXER-WAY_TO_ETERNITY]

I love this channel ❤❤❤❤

[@ELIXER-WAY_TO_ETERNITY]

I love these new toys 😍

[@ELIXER-WAY_TO_ETERNITY]

3:31 this is only some clever 3D animation which cheats our brain to make the illusion that it is real but scientifically this not possible to make this sort of thing in real life. Correct me if I was wrong ( in case )

[@gimmedimmy6533]

I really appreciate you switching up the music. Do that occasionally to keep more dynamic. ❤

[@gimmedimmy6533]

❤

[@westonding8953]

The quiz question involves symmetry. You have a convex lens that flips the words. However all of TOMATO’s letters have vertical symmetry. So technically it is flipped but we don’t notice it.

[@morbontg]

That was my fun observation as well.

[@dbspecials1200]

Yep, and if there was the slightest defect in any of the letters it would have showed up like pee under a black light.

[@intellischool]

'TOMATO' when laterally inverted stays the same due to symmetric shapes of letters whereas GREEN is not.

[@rogeriopenna9014]

Yeah, that was so obvious

[@SeanPat1001]

We had a physical Gaton demonstration, but one of the pins was slightly bent and needed repair. We tried a computer simulation of the same phenomenon and discovered that it did not have the same impact on students as the actual physical device, so we got the physical device repaired and used it from that point on.

[@deltabadger_official]

3:29 Dislike for that. Misleading thumbnails are the worst. (Of course, the Instagram image is 3D and you know it).

[@michaellyrakisvamvoukakis4130]

3:32 question. My opinion this is 3d animation ... It can happen in reality if the camera synchronized with the frame rate o the LEDs.. But not the floating lights at the end.. Moving up . This is what revealed its 3d I think

[@raenfox]

It's a 3D animation. There's multiple similar animations on the internet.

[@drishti1622]

5-Minutes Crafts wants to know your location!

[@krixical6908]

stolen

[@Nightslayer606]

Very much stolen and cringe

[@Abbydog10]

Personal info, no ty

[@Kaysler]

Nah, some of these are real, 5-min doesn't bother with that.

[@robertgotschall1246]

Back when I was a boy scout, they had a project to build a pop-pop boat like this. Never did it, but always wondered if they actually worked. Thanks.

[@physicsfun]

Thanks for sharing Physics describes the real magic of the universe.

[@ll7868]

What song is in my head watching a Slinky? "What walks down stairs, alone or in pairs, and makes a slinkity sound? A spring, a spring, a marvelous thing! Everyone knows it's Slinky. It's Slinky, it's Slinky. For fun it's a wonderful toy. It's Slinky, it's Slinky. It's fun for a girl or a boy." A good jingle never really stops playing in heads. I bet 90s kids remember the Toys R Us theme.

[@joeschlotthauer840]

3:30, where...

[@boonjabby]

Obviously Jim Carrey screaming "everyone loves a slinky" in Ace Ventura is the only thing I hear when I see a slinky

[@baerdred]

The Moire pattern doesn't work by interference, it works by changing the sampling rate of the image. Just thought I'd mention.

[@rdarian9314091]

Thank you! You saved me from having to say it!

[@rdarian9314091]

btw...it's not the "sampling rate," but merely the portion of exposed figure. "Rate" doesn't enter into it.

[@culpritdesign]

The cards using the moire effect was creative

[@MrLikeAsatellite]

The letters of "tomato" are symmetrical.

[@Desrtfox71]

The word Tomato is vertically symmetric, so it is reversed as well, but we don't perceive it as such. (Lol, didn't realize this was 5 months old)

[@tercola8756]

What's the thing at 3:30, is that real?

[@androidlogin3065]

6:51 TOMATO word ihas every letter that s symetric respect middle verical axis, so when flipped it looks like the same, but it is flipped.

[@physicsfun]

YES!

[@Staarkalinou]

7:02 i guess most people already explained it : TOMATO is just as flipped as GREEN, the only difference is TOMATO is composed only with symmetrical letters

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@AlaskanGamer315]

The green tomato is super simple, lining all the words in tomato vertically causes all the letters to line up and if you put a line from top to bottom, both the left and right side of the letters are perfectly symmetrical while when you do the same with the word green, the letters are not symmetrical at all. Definitely over explained that, but you get my point

[@MeiGunner]

7:00 The Tomato , word ,,, is Flipped .. what do you mean ? green looks flipped because The same reason you are upside down in a Spoon ... ( The Tomato letters are symmetrical )

[@kishanchauhan6932]

GREEN word is different when flipped but TOMATO is same even when flipped!! So actually TOMATO word is flipped but it's look like it is unaffected

[@doddsmountain]

The letters in tomato are bilaterally symmetrical, that's why it doesn't appear to flip.

[@glenkersul8536]

The letters in Tomato are symmetrical left to right and thereby unaffected by the reversing effect of the clear cylinder.

[@kikook222]

I think Action Lab answer this question in a video years ago. Tomato is the same mirrored but green is not. Every letter in tomato is symmetrical.

[@deucedeuce1572]

I'm surprised someone had to make a video to explain it. I've definitely missed obvious things though that made me feel like an idiot when I finally figured it out (or someone explained it to me). I would think most people would get this one though.

[@charleshair82]

The letters in word TOMATO are symmetrical so reversing orientation won't appear any different, unlike the word GREEN who's "EE" will look more like "33" with orientation reversed.

[@physicsfun]

You are intelligent

[@LoudGuitarSounds]

Gotta love when a quantum physicist finds art. 😂

[@justayoutuber1906]

I've never seen a pop pop boat. That is cool!

[@physicsfun]

Glad you enjoyed!

[@SakeKaama]

the letters in tomato are symmetrical about the vertical whereas the letters in green are not

[@SupraBlack-dp4zz]

What song do I hear with the slinky? Shepard's Tone.

[@jonasjarboe2627]

yes

[@bansidharko6484]

In a pop pop boat steam is not involved, as the water never reaches the heated area. Also steam cannot be generated at such low energies. Teaser: then how it works ;)

[@Nobe_Oddy]

OH COOL!!!! @ 1:06 - I saw this Pen on 'Action Lab' - He took it apart and showed us how it worked... pretty cool :)

[@leeupton6015]

Love this channel. Thank you. Peace.

[@physicsfun]

Glad you enjoyed! Physics describes the real magic of the universe.

[@TehLilbrotheral]

The word tomato is also flipped, no difference in wavelength enough to ignore refraction, but because all the letters in the word forwards and backwards when aligned in a vertical fashion our minds don’t register that anything has actually happened

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@squiddy077]

The song I have in my head when the slinky walks is Them Changes by Thundercat

[@austinevplab7167]

It looked like the slinky sometimes flipped sideways instead of flipping overhead. Was that just an illusion? As for a song, I got one. I don’t know the name of it but sometimes the lyrics are _the worms crawl in, the worms crawl out…_

[@MeiGunner]

These Videos Are So cool man ,, keep them COMInG!

[@physicsfun]

Glad you enjoyed The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.

[@robertpurgason822]

The letters in the quiz are easy to explain. The letters in TOMATO each have symmetrical sides horizontally and so look the same when reversed. The letters in GREEN can't remain the same when flipped.

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@fiestathesh4rk]

Idk why but that pen makes my skin crawl

[@LeMayJoseph]

The last one is trivially easy: all the letters in TOMATO have bilateral symmetry. They’re reflected too, they just look the same backwards.

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@Unknown17]

It’s called CLICKBAIT when you picture an item on a thumbnail that you don’t explore/discuss/feature on your video. Just saying, essentially, “Ooh, what in the hell is this thing? Anybody know?” is about as clickbaity as you can get. Thumbs down.

[@DHogan67]

Tomato is spelled with letters that are all symmetrical, while green is asymmetrical. Thus, the inverted letters only show in green.

[@physicsfun]

You are intelligent The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@hotelmor4348]

Tomato is symmetric around the vertical axis. It's being flipped, but it LOOKS like nothing happened, whereas green isn't vertically symmetric.

[@physicsfun]

Yes! the trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@MidnightSt]

I wonder if the person with the eye tattoo is always carrying around the moiré mask to show it off.

[@JVB390]

1:32 this also works with dish soap

[@abneryates4304]

the puzzle at the end of this video reminds me of those stupidly easy puzzles you find on facebook that are designed to be easy so people will comment and drive up engagements

[@joebarnes3178]

That pop pop boat is awesome. I have been collecting them since the 70,s and I don't have one like that. Very cool. Hook me up with the name of the place you bought it. Please

[@dioilham6006]

7:13 In Indonesia the boat called "Kapal Otok-otok" (Otok-otok Ship). You can buy on the traditional market or Pasar Malam, In Indonesia so much sell thu's ships. At I'm in child, after school i playing thu's ships on the empang

[@mikeweller9933]

The word tomato is symetric about the vertical axis green is not. Both are rotated.

[@microconceptsadi]

I want to purchase some. How to do it?? From India, Kolkata..

[@physicsfun]

Please read video description for details

[@thodiyilshaji]

I wish to get technical know how of 2 to 3items for my school science fair. Could you send ith DIY steps.

[@AKSHAY-rh7mx]

I am still Scratching my head over these gadgets

[@physicsfun]

The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.

[@tokumei_llc]

"green" "Tomato" - The letters are the same regardless of mirror direction. The letters that will look the same are as follows: A, D, H, I, M, O, T, U, V, W, and X

[@physicsfun]

Yes! the trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@gamereaper193]

This is a cool video. What I liked most of all is that you called the tops d6 instead of dice or yazee dice.

[@physicsfun]

The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.

[@Vini-BR]

Do you ship to Brazil?

[@koadithekingslayer4038]

Quiz: T, O, M, and A are all identical if flipped left to right/right to left. G, R, E, and N are not. That's the only trick; vertical symmetry.

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@MikaelTh]

Reg. the pop-pop-boat: The heat makes a diaphragm pop in and out and thus sucks and expels water from the rear propusion tubes. Same amount of water in and out. But out is a directional force and suction is not.

[@physicsfun]

Yes! Pop-Pop Boat: birthday candle powered, super simple steam engine named after the sound it makes when operating. The engine is just a metal box, heated by the candle, with two pipes coming out of it. Steam builds up pushing water out with an explosive pop- which then creates a vacuum sucking more water in to repeat the process. Patented in 1915 these were very popular in the 1940's.

[@J.J.J.J.J.J.J]

Love the pop-pop boat and Galton board!

[@physicsfun]

Glad you liked it ❤️ The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.

[@J.J.J.J.J.J.J]

@@physicsfun NIcce

[@korylafferty3850]

For the slink one when it’s walking coconut mall but you have anxiety is playing

[@devchugh8566]

TOMATO is unaffected because of symmetry in the words each word forms a symmetrical mirror image

[@sivarajmamatha60]

Sir how can I get these r all things

[@Slavic_Goblin]

This channel is actually pretty good. Glad I found it, albeit a bit... late.

[@physicsfun]

You are so kind ❤️ Physics describes the real magic of the universe.

[@Slavic_Goblin]

@@physicsfun Yeah. Strictly speaking is chemistry my first love, but physics is a close second. The two disciplines are like twin sisters anyway and none of them is particularly jealous.

[@makethisgowhoosh]

What song do I think of watching the slinky walk the treadmill? The Riddle

[@Daniel-uc9ll]

7:02 tomato is symmetrical when written downwards in caps

[@realcygnus]

Horizontal symmetry .... ALL of the letters in TOMATO(in capital form) just happen to be symmetric if left/right mirrored/flipped. IF "A" was "a" instead, it would be obvious. Some letters are only vertically symmetric(like C,D,E & H) or even both horizontally & vertically like H,I,O & X. etc.

[@physicsfun]

You are intelligent

[@holdmeclosertonydanza22]

I think that laser hologram thing is probably CGI. There's nothing for the light to refract off of, so unless it's a trick like a really low shutter speed, or the footage has been doctored, it's CGI. If it's real, I'd love to know how they're doing it.

[@ariel8272]

Waving sparkler fireworks leaves a trail pattern on your eyes Maybe extra bright source and viewing in low level light ??

[@NoahGooder]

this is the kind of stuff i remember seeing at sharper image

[@devionspectre777]

1:35 my childhood toy 😭❤️

[@donaldwilliams4019]

The answer to this quiz is due to the fact that in the word TOMATO all the letters are symmetrical and you don't notice that they too have been flipped.

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@keithlangill9843]

I hate it when the thumbnail is never actually in the video. Welcome to the killfile.

[@Fektthis]

To all viewers who knew why TOMATO stayed the same. Someone already beat you in answering it. You can all stop now.

[@dolst]

I know this video is almost a year old but I have not seen the solution for the quiz yet. However, I did see something similar on Mr wizard many years ago. T, O, M, and A are symmetrical, so appear the same even when mirrored. These of course are all the letters required to spell "tomato". The other letters are not symmetrical so they appear backwards as we would expect. Surf Wisely.

[@westonding8953]

Amazing science stuff!

[@physicsfun]

Glad you enjoyed!

[@cleverclogs3972]

0:48 I couldn’t help but think count Olaf would like that

[@juniorpatrickebol1642]

Why TOMATO wasn't affected? It was affected by the mirror effect but due that the letter in word "TOMATO" is symmetrical letters they can't be seen any changes but they really get reflected backwards you couldn't see because it's symmetrical letters

[@drake19992]

This is interesting. When you turn around each letter of the word tomato, it will be the same. Kinda like a palindrome

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@lightborn_granger]

They word "Tomato" does not flip because all the letters are symmetrical (I'm late but yeah)

[@physicsfun]

You are intelligent

[@lightborn_granger]

@@physicsfun Hehe thanks, I just got hooked to science gadgets from your channel, so I'm late lol

[@mooseschimming3809]

All of the letters in the word "TOMATO" have vertical line symmetry :)

[@brianlozano3300]

The brain teaser answer is that each letter in tomato is symmetrical. So it wouldn't be affected.

[@physicsfun]

You are intelligent!

[@安静-q4r]

1:29 One time I accidently spray isopropanol on a bucket of water and saw how the water moved

[@coloradostrong]

No you didn't. Just stop with these internet lies. Try to be more productive at the pet shop where you work sorting goldfish.

[@dustmighte]

Slinky on the treadmill song: Com Truise - VHS Sex

[@elishort3869]

The song I heard in my head was stayin alive lol “you can tell by the way I walk”

[@elmerquispe....5893]

Que alucinante man .... Saludos de Cusco Perú.....

[@physicsfun]

Gracias por mostrar tu amor. La ciencia es un hermoso regalo para la humanidad. La ciencia es magia que funciona.

[@deucedeuce1572]

5:55 "Fun fact: It is not known if any of these records are the smallest possible, no mathematical proofs yet exist on this question." Anyone know what this means? I don't get it.

[@JungleLibrary]

It means that you could maybe make the puzzle with less pieces. Maybe these are the best possible, but the only way to know would be to either: make a mathematical proof of the smallest number of pieces for any given puzzle, or make a puzzle with less pieces than the record (as a counterexample)

[@deucedeuce1572]

@@JungleLibrary I see. Thank you. I was clueless. I was just thinking make the pieces smaller, but that didn't make sense, because all you'd have to do is just make the pieces smaller.

[@MeiGunner]

3:36 I bet its animation

[@toddsedlak]

The item pictured in the thumbnail appears nowhere in the video. Explain that

[@rogeriopenna9014]

Let me be the FIRST saying here the reason for the word tomato to not be flipped is because there letters are bilaterally symmetrical. Haha, I bet none of the thousands of comments below noticed that yet.

[@MeiGunner]

6:36 The light is Bending ... like when you See your Self up side down in a Spoon

[@sirfishslayer5100]

Green Tomato...is not being flipped upside down but reflected backwards like a mirror...all of the letters of TOMATO are the same when flipped left to right.

[@physicsfun]

Yes! the trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@jonasjarboe2627]

the letters just look the same both ways. if it wasn't all caps, the m and a would look flipped.

[@ben_clifford]

6:49 All the letters in TOMATO are symmetrical across the vertical axis. That's all there is to it.

[@physicsfun]

Yes! The trick here is that the letters in the word TOMATO are symmetric with respect to a vertical line through their center, so even though they are flipped by the cylindrical lens just like the letters in GREEN, the symmetry of the letters hides this fact.

[@mikekuschka998]

Tomato reflected on the vertical axis is symmetric. It will look the same.

[@physicsfun]

You are intelligent

[@maharsheen.9522]

I loved the swing thing haved you reconised me 😊😊

[@physicsfun]

I'm so glad!

[@josephmama9657]

WHAAAAT Rolls downstairs? Alone or in pairs, rolls over your neighbors dog?! WHAAAAAATS Great for a snack and fits on your back?! It’s LOG LOG LOG!! ITS LOOOG ITS LOOOG it’s BIG it’s HEAVY it’s WOOD!! ITS LOOOOOG ITS LOOOOG It’s better than bad it’s GOOD!!

[@lightsone2]

I seem to remember that I had a pop-pop boat in the mid-50s.

[@SolutionsNotPrayers]

Brain Freeze and an abscessed tooth hurts brain more.

[@AlexLancashirePersonalView]

I had a boat like that. Also, put a camphor christal in the back of a small woooden boat.

[@fatcat1250]

Disappointed that social media and news outlets is not listed here.

[@robinwolf7809]

Tomato is also mirrored, it's just written in a font that is symmetrical.

[@physicsfun]

You are intelligent

[@thodiyilshaji]

Very good projects

[@daVbOz]

Song for #1 Bla Bla Bla - Gigi Dagostini (or however you spell his name ;)