Shining Light Through Solid Balls Using Quantum Mechanics-Poisson's Spot Experiment

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In this video I show you how it is possible to shine light through a sphere using the wave-like nature of light. This spot in the center of the shadow of a sphere is called Poisson's spot or Arago's spot. It is a result of the diffraction of light around the edges of the sphere that constructively interfere right at the center. Then I show you what it actually looks like to look at the center of poisson's spot. Does it look like the light is actually going through the ball?
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15 май 2024

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Комментарии : 6 тыс.

@TheActionLab 4 года назад

Just noticed something. Look at the shadow of the wire and notice how there is a bright line right in the center of the wire! That is the same effect happening in a linear fashion. I wish I would have noticed in the video!

@libratyanjhon3959 4 года назад

5:57

@sourvad 4 года назад

Wow yes, I've seen this experiment with round objects before but not with linear objects. It surely is much more easier to spot the wire's shadow. Good find mate.

@libratyanjhon3959 4 года назад

@@sourvad wire = elongated 'sphere'?

@sourvad 4 года назад

@@libratyanjhon3959 yes correct, but it is more linear than spherical. So I took the liberty of ignoring it's spherical nature.

@slots7775 4 года назад

The Action Lab Can you create water out of nothing?

@logancapes 3 года назад

Poisson set himself up in a win win. Either he was right about the particle theory, or his math skills were on point.

@nemonomen3340 3 года назад

True, but also imagine boasting that there's no way something could exist and then getting it named after you. I know I'd be at least a little embarrassed.

@michaelmiller2210 3 года назад

Nice profile pic L

@logancapes 3 года назад

@@michaelmiller2210 It acts as a silent handshake to identify those with good taste. Thank you, Casserole, my brother.

@nemonomen3340 3 года назад

@@michaelmiller2210 ikr. Fun fact: I learned yesterday that there's a _musical._ It was never fully developed into an English version, but there are songs on RU-vid. It's been out for years and I had to learn about it from a _"Good Omens" animatic!_

@UJustGotGamed 3 года назад

quantum win

@9sore 4 года назад

this doesn’t work anymore this glitch was patched by the government in Earth v.5.17.2020

@ZawayixFalconer 4 года назад

Error, v5.17.2020 isn't set to release for 3 more weeks

@-cookiezila-461 4 года назад

Official patch notes for v.5.17.2020: Fixed a glitch where the atom at coordinates 1235324745453432324344454675 455377644456 169865688542244421245678986423578632478 dissapeared

@-cookiezila-461 4 года назад

Thats it, I think their keeping the glitch as a feature

@randompersonoftheinternet8012 4 года назад

jsdothatshit the official patch notes just got leaked: -Coronavirus experiment will be concluded -Light wrapping around spherical objects will no longer occur -End of the world trials: stage two (INFERNO) will begin -Time relativity will be reset Set release date: 23T.894.3N1 (2-26-2020 on Earth)

@josephybarra9404 4 года назад

Matrix patch 1.12.480

@paulierymenko4411 3 года назад

Warning: It looks like you could "try this at home." Please: Do not get behind the screen with the little hole in it to see Poisson's spot with your eye! And in general, do not look directly at any laser, not if you value your vision. He really should include this warning.

@sophierobinson2738 2 года назад

Hi! Late to the show as usual. He actually thinks his viewers are smart enough to know this.

@iztaex2488 2 года назад

Yea… we’re not all as dumb as you.

@NicktheBlkBlt 2 года назад

safety is never an invalid concern, it is a good warning to provide.

@Rabbotic 2 года назад

@@iztaex2488 speak for yourself...

@brm7469 2 года назад

Thanks mom

@TrailBlazer5280 Год назад

One of the coolest demonstrations. And just as cool to see the interference surrounding the ball too.

@zacharysherry2910 9 месяцев назад

Yeah and it wouldn't have been so effective if the lightsource wasn't the laser since it has striations

@simon6071 4 месяца назад

Actually, in this experiment the laser light does NOT shine through the solid ball. Doing the experiment by soldering the ball inside a hole on a steel plate instead of hanging it on a wire can prove that to be the case. Light wave around the ball being able form a bright spot behind the ball due to constructive interference of the light wave around the ball does not mean light actually pass through the steel ball.

@pedro_mab 4 месяца назад

@@simon6071 that is not what the experiment demonstrates. did you even watch the video?

@simon6071 4 месяца назад

@@pedro_mab I'm not talking about the experimental result being wrong. I'm talking about the misleading title of "Shining Light Through Solid Balls Using Quantum Mechanics." The light waves travel around the steel ball to form a bright spot at the back of the ball with constructive interference. The light waves did not go through the ball.

@user-ki3wf7bt5f 3 месяца назад

@@simon6071 I think its mentioned at the near end of the video that the wave forms a light point around the ball which interferes with each other to form a bright spot Yeah but he could’ve been more clearer and said light goes around, sure

@wtakerisks 4 года назад

Legends say he’s still smiling after the video

@TheActionLab 4 года назад

😃

@xerone5733 4 года назад

Is this a black mirror reference ?

@XtremeQuantumSrength405 4 года назад

@@TheActionLab i wish i had that many views

@ugurozbek6399 4 года назад

Well Legends were True 🤣

@MammaOVlogs 4 года назад

Geen Naam lol

@PsyloSatan 3 года назад

7:44 made me feel like I was in school again. My mind instantly fell in the gutter right in the middle of class.

@matthewtalbot-paine7977 2 года назад

That's a butt!

@TheCerealArsonist 2 года назад

@@matthewtalbot-paine7977 saggy balls

@Milesco 2 месяца назад

@@matthewtalbot-paine7977 LOL... exactly what *_I_* was thinking! 😄

@pomelo9518 2 года назад

I was always confused about how photons could not pass straight through the gigantic separations between electrons, protons et cetera. I thought about the large particles pulling the light in, but I recalled that you need a black hole to do that. This was informative.

@krebgurfson5732 2 года назад

that's not an accurate description of an atom

@forsakenquery Год назад

The electric fields around the atoms components is the dominant force in the atom. Light is a wave in that field

@MichelleHell Год назад

The light is oscillating it's intensity according to its wavelength, so it has a high probability of hitting the atoms electron cloud, if the material is thick enough or has the correct properties

@neutronenstern. 11 месяцев назад

A good model to see how this blocking works, is by looking at the fact, that atoms can absorb a photon. So if wavelength matches ths properties of the atom, the electrons of a arom take away the energy of a photon, if it comes near enough. So the photon will excite the atoms,and in return, it will be gone. Then the atom might release a new photon later, but in a random direction, or this energy just goes to heat. Also a photon can get reflected.

@RGMS_ 3 года назад

this guy always seems happy and sad at the same time, im confused

@joshuhigashikata9201 3 года назад

He seems tired

@joshuhigashikata9201 3 года назад

But also very awake

@nothin1456 3 года назад

Lol hilarious , he seems chill!

@dominus6695 3 года назад

it's his quantum self ya'll

@Doodlezeee 3 года назад

Right bro 😂😂😂

@zombathinlostleghackercat5233 4 года назад

He talks like he's lying, but you know he's spitting facts.

@RichardMoffitt0 4 года назад

oooooooh! take my thumb up!

@zombathinlostleghackercat5233 4 года назад

@@RichardMoffitt0 🙂🤜👍 Got it. And 27 others.🙂__ 👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

@zombathinlostleghackercat5233 4 года назад

@@RichardMoffitt0 🙂🤜👍 Got it. And 27 others.🙂__ 👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

@michaellv426 4 года назад

In this video he talked like he lied, but in fact he talked about light

@zombathinlostleghackercat5233 4 года назад

@@michaellv426 ? Yes, but I dno't understand the point or context or your comment/reply.

@LorcanG 2 года назад

This channel is one of a kind, you never see channels both being equally entertaining and interesting and original

@basdejong1598 Год назад

There isn't much more interesting/captivating than witnessing a quantum physical phenomenon take place right in front of you.

@itspennywise1179 4 года назад

I shined the light on my balls for a class project, and all I got was detention.

@garyvigue 4 года назад

Use a more powerful laser next time if you want to make an impression.

@johngarcia222 4 года назад

Lmaoooo

@khairinarif369 4 года назад

Great

@khairinarif369 4 года назад

Maybe because you are the pennywise from IT

@ytlongbeach 4 года назад

were there two spots on the other side?

@cprograms4280 3 года назад

"you can't see my face because the basketball is in-front of it" Well would you look at that?

@noah.9039 3 года назад

I thought it was because he has a tiny ass head

@KJ-rq2ft 3 года назад

no.

@drippy.mcflip 3 года назад

Matti is that you?!

@yesd2024 3 года назад

Theoretically you can because the center of the basketball is the brightest spot meaning theres light passing through but its so small that we cant see it

@germanboy1124 3 года назад

@@yesd2024 that was a good one

@MatheusSousaALenda 2 года назад

This is one of the best channels ever. You really know how to explain things. Thanks for all your content.

@Caracazz2 2 года назад

Check Steve Mould's channel

@NerdyCats3 3 года назад

Thank you for showing this so clearly, and making the science real.

@GabrielGonzalez2 Год назад

I mean you could think of the zone you want to keep your opponent in as "anywhere that isn't next to me"

@maruftim 4 года назад

Poisson: there's no way it's a wave lmao *does an experiment *surprised pikachu face*

@camtisxr1430 4 года назад

That lmao Just makes it Perfect

@tanasirobert9157 4 года назад

Camtis why Do you capitalise Random words?

@maruftim 4 года назад

@@tanasirobert9157 lmao Yeah why is That

@camtisxr1430 4 года назад

Its my autocorrect somehow. Dunno why it is doing that

@HilmyA.S. 4 года назад

More like : "...... Nahhh i must be high as fuck"

@doriangoff2474 4 года назад

I was messing around with a basket ball and I spun it really fast and let it drop to the ground, but when it hit the ground it reversed its spinning direction. I found this weird and I am curious for an explanation

@TheActionLab 4 года назад

well the ball is going down before it hits the ground, and then goes up. So it's reasonable to believe that if it was spinning one direction before it will spin the other after it hits. This is due to the elastic recoil pushing it in the opposite direction it hit the ground with. I should do a video on this:)

@jjk2one 4 года назад

An opposite reaction... but why

@vexari4683 4 года назад

always wondered it too..

@jxrin 4 года назад

@The Action Lab But the elastic recoil should not be strong enough to completely reverse the direction of spin of the ball - I think it may be because the ball flipped upside down during the fall which makes it appear as though it changed the direction of spin, when actually the y axis on the ball was flipped. Edit: Since the ball was dropped by a human we can assume the ball wasn’t dropped on it’s central point of spin. This means the ball won’t go straight up after the bounce, instead, the friction will make it go in another direction which could flip the ball on it’s axis of spin in almost 180 degrees. So in a nutshell, the direction of spin of the ball never changed, as this would require an equal and opposite reaction + some additional energy to account for the loss of energy via air resistance, gravity and other factors which cause loss of momentum. Picture it in your mind, imagine a ball spinning clockwise - when it is upside down, it never changes the direction of spin, it spins in the same direction but upside down, which makes it appear as though the direction of spin was flipped.

@JuniorBoi 4 года назад

@@TheActionLab no it doesn't happen that way....that's considered to violate the newton's second law if so... This is easily observed with the a cricket ball , if you get ro spin the ball it would change its travel direction to a certain angle after it hits the ground or for a faster ball spin you would notice a magnus effect yet ball follows the direction but would never change its spin to opposite direction coz it not only requires exact amount of counter torque but also a bit of extra amount .. For a perfectly elastic collision(** if you theory is correct **) the ball should actually stop spinning but can never get the opposite spin

@charlesvandenburgh5295 3 года назад

I wish back in high school I had a science teacher this good and fascinating.

@sparkyzcc6178 2 года назад

Most he does is way to complex to be taught in high school. So its just not possible to have such fascinating classes in school.

@neutronenstern. 11 месяцев назад

@@sparkyzcc6178 stuff you learn in school is still vrty fascinating, if you are more interested in details, than in really new stuff. What he does is, he gives some basic information about a topic, that is very very new to most people, and which will then fascinate one. In school however, you learn in physics about stuff you see everyday in a more detailed way. E.g if you learn about centrifugal force, you have all already seen it, and might think its boring. But if you are interested about how one can really describe it, and how and why it works in detail, then school physics is very very interesting. You've got to want to know how things work in detail, even if you have seen it a lot in your life, to be fascinated by school physics. But sadly most people arent. They are only interested in completely new stuff, they havent already seen, cause they are easily bored.

@sparkyzcc6178 11 месяцев назад

@@neutronenstern. wow nice point of view about that topic

@kirstentownley8916 2 года назад

Yes! I’m enjoying your videos and learning so much! You’re definitely helping pique my curiosity about quantum physics and mechanics! Thank you.

@mendelson6052 4 года назад

Given the proper circumstances, would you be able to find Poisson’s spot in the shadow of the moon during a solar eclipse?

@hak4fak 4 года назад

he said the ball has to be close to a perfect sphere,i doubt the moon is close to a perfect sphere

@mendelson6052 4 года назад

I must have missed that! Still interested to know if it’s possible at that scale though!

@tomatenbomber8830 4 года назад

Usually stuff like that only works with coherent light that has a consistent wavelength (like a laser) and if the process during which the light is "created" isnt irregular. The sun emits many wavelengths at very small irregular intervals because the main light source is fusion which is very spontaneous. Might still work tho maybe there is some weird effects canceling each other out...

@gustav9885 4 года назад

The sun isn't quite a point source of light

@yogeshkumar9311 4 года назад

@@hak4fak Also, It needs to be smooth as hell!

@NoobSaibotVII 3 года назад

I'm confused on why Todd Howard is talking about light and not making Elder Scrolls 6.

@maxx9137 3 года назад

lol

@jeffthedick3793 3 года назад

lol

@gf920 3 года назад

How does this comment not have more likes. Underrated comment tbh.

@ghostdrew4887 3 года назад

Get ready for the ray tracing.

@xidemonslayerxi4510 3 года назад

Heh, wow.

@Fit_Philosopher 2 года назад

Amazing loved it. Your video algorithmically found me after watching an MIT Superimposition lecture. Profound implications, and excellent explanation! I subscribed!

@protonmaster76 Год назад

I think it's important to note that you must use laser light, as it is monochromatic. A standard light will have multiple frequencies and will not constructively interfere like that.

@TheMapman01 Год назад

Is that true? Would not each constituent wavelength constructively interfere with itsself?

@protonmaster76 Год назад

@@TheMapman01good point, but a laser is both coherent and monochromatic. Meaning that all the peaks and troughs of the laser light are in phase with each other.

@TycTycHehe Год назад

No, neither monochromaticity, nor even (temporal) coherence are needed. Arago did it with a flame light. What you actually need is spatial coherence at the distances of the order of the diameter of the sphere, so that each wave packet arriving at the sphere is cylindrically symmetric with respect to the axis between the light source and the sphere. For this you can just make sure that your light source is small enough (e.g. emitted through a pinhole) and far enough away from the sphere (this doesn't have to be very far: a few dozens of sphere diameters should suffice if the pinhole is much smaller than the sphere).

@avcomth 10 месяцев назад

Well this guy gets his video on the chart by only yelling out only the WOW factors of an experiment and leave all the actual reasonings vague on purpose. Notice how in this video he kept mentioning the light going "through" the ball before reluctantly admitted it going around the sphere 's surface in the end.

@marianl8718 8 месяцев назад

@@TycTycHehe Everything you showed is absolutely correct. And this video has a lot of shortcomings !

@fatjesus1125 3 года назад

Nobody: John Cena explaining why we cant see him

@chasemcdonald7250 3 года назад

Lmfaooo how does this comment only have 30 likes

@p_pthenoob 3 года назад

@@chasemcdonald7250 cuz they can't see this comment

@alx2900 3 года назад

This comment and the replies are so perfect

@michaelrebello4918 3 года назад

You have 420 like... should I like this comment or nah?

@itsFnD 3 года назад

Clearly most people see the like button but reply button

@plot4445 4 года назад

Poisson: Light doesnt have the properties of a wave, I'll prove it with something ridiculous his calculations: congratulations, you played yourself

@SimonClarkstone 3 года назад

See also: people trying to use proof by contradiction to prove Euclid's fifth postulate.

@danielsavluk7556 3 года назад

I can't get over how close his eyes are it pisses me off. He should keep that ball in front of him.

@StephenSLG 2 года назад

This is real science ladies and gentlemen! Something that you can observe, study, and demonstrate.

@burnsama8541 2 года назад

love your videos. so much information in such a nice concise manner, thanks for the knowledge!

@lrba5524 3 года назад

evidently whatever's impeding my vision of John Cena is non-spherical.

@coolguy9732 3 года назад

Well fucking played 😂

@wachyfanning 3 года назад

No, John Cena IS the sphere

@AvidiaNirvana 3 месяца назад

I came to the comments looking for someone talking about Cena. Found it. Hahaha

@Windows11Guy798 4 года назад

Who clicked on this video to actually see him shine a flash light through a basketball Edit: thanks for 2,5k likes guys ☺

@foreign_physics8490 4 года назад

You can fool some of the people all the time but you can't fool all the people all the time.

@scottmcintosh4397 4 года назад

Obviously, you did.... I just clicked on this to laugh at you 😂

@lordot8665 4 года назад

C Yashwant so they quote Abraham Lincoln without giving him credit. Loooooooseeeers.

@j.a.f.e.r7482 4 года назад

You can fool some people sometimes but you can’t fool all the people all the time

@pradipsiwakoti9352 4 года назад

@@scottmcintosh4397 MAD LADDDDDDD

@insurd 2 года назад

You may not have technically "bent the light" but that experiment and truth definitely bent my mind. Awesome video and great explanation.

@b1ackwa1tz2 2 года назад

I know I'm behind, but I wanted to remark that it is interesting to note how the point of magnetism also appears to affect and bend the light. Also, do you think it might be possible to see this effect during an eclipse?

@10pitate 2 года назад

The moon is certainly not small nor smooth, so the probability is so small that it can be called impossible

@b1ackwa1tz2 2 года назад

@@10pitate I had hoped scale might play into affecting the hypothesis positively. Guess you'd need to point something like one of our intergalactic telescopes at the moon to see the tiny dot? Wonder if the Vatican is down. xD

@agdmp1188 2 года назад

@@b1ackwa1tz2 I think the more important part is that it isn’t smooth, so this effect would be nearly impossible for the moon

@b1ackwa1tz2 2 года назад

@@agdmp1188 Technically we'd be using the earth as the ball- but I'd assume your argument remains valid.

@singularitygaming4893 2 года назад

probably not, because the sun is hardly a point source of light, and (all the other responses)

@kingsmencrown5763 4 года назад

If I had a teacher like him in high school I would have never missed his class even if I had to drag myself in.

@briannolan7818 4 года назад

What, you like guys with stubbly beards?

@freehoya4276 4 года назад

@@briannolan7818 maybe because he actually explains the topics he is teaching and not just rambling from a text book

@briannolan7818 4 года назад

@@freehoya4276 - True.

@worldwolf9527 4 года назад

@@freehoya4276 True

@cyberwolf575 4 года назад

I think he is terrible at explaining this. Don't get me wrong, I understand everything he is saying , but to an average person this is awful teaching. There's much easier ways to explain the same thing he explained so that more people understand it and thus get excited by science.

@alimroueh31 3 года назад

The reason u can't see me when i move this basketball infront of my face is because there is a basketball infront of my face.

@Tailspin80 3 года назад

I could see him quite easily.

@JoShPEt1993 3 года назад

😂😂

@rabeebibrat1805 3 года назад

good point😂😂

@puss_n_booze 3 года назад

mm, yes, the floor here is made out of floor

@kcvanderpool 3 года назад

Science 100

@billaguirre 4 месяца назад

Thank you and let me tell you that the high-tech positioning and micro-adjustment equipment you use is impressive.

@metsys7928 3 года назад

2:00 - 3:22 Me trying to extend my essay to meet the word count.

@Fck_the_atf 2 года назад

Hes doing the same. But just for the 10 min mark lol.

@stephen_boss 2 года назад

Hes just tryna teach us in depth , appreciate it.

@moneyboyok 2 года назад

🤣🤣

@Swrld 4 года назад

Would this happen in a solar eclipse?

@alankarjamle8559 4 года назад

Well that's a good question.....

@Kei3th1424 4 года назад

That's a good question. Leaving comment here just in case someone care to explain

@sejalsoniashivprasad5442 4 года назад

I thot the same tho

@pizzaboydeluxeyt6702 4 года назад

I would think that non metallic planetary substances would not create such effects, however with the intensity and direct travel of solar light, it could perhaps be possible. 🤷‍♂️

@g.ferreira6745 4 года назад

I don't think so, but I'm commenting just in case anyone have a better explanation

@soupham8156 4 года назад

Now try this with the blackest material you can get

@huntermoeller4040 4 года назад

Yea......🤔

@syth-1 4 года назад

This, a metallic shiny object is nice but how well does this effect work on something that absorbs all light??

@ciencialogica7783 4 года назад

A 2.0 black ball, that is all. Wave or not wave

@xcnnugget1794 4 года назад

@G W Did i ask?

@750kv8 4 года назад

Makes no difference. Reflection of light (from the ball) got no role here.

@Aem2512 8 месяцев назад

This is my favorite vide too! I live the content and i shocked!!

@dietwald 8 месяцев назад

This was amazing

@nisharanidas6651 4 года назад

Physics: nobody can break my rules Quantum mechanics and Russians: hold my beer

@mrsoftware7828 4 года назад

Quantum mechanics is also physics... and even rusians are made of atoms

@chandrakerdinesh3480 4 года назад

@@mrsoftware7828 that was rad

@crusader2338 4 года назад

Thanks for the free r/IAmVerySmart karma!

@fgvcosmic6752 4 года назад

Mr Software but it broke KNOWN physics when discovered

@FreshBeatles 4 года назад

hardbass

@user-vv2iz7ly8q 4 года назад

Poisson (mockingly): if it were actually made out of waves, then directly in the center would be the brightest spot. *Directly in the center is the brightest spot* Poisson: am i a joke to you

@DrDomich 4 года назад

@tinylilmatt yeah. For a nerd - the best joke ever. 🙌🙄

@owah 3 года назад

MALEK001 001 i wondered how many comments it took for me to see someone say that

@nuclearshorts1243 3 года назад

Well, now he is

@fredspofford 3 года назад

@tinylilmatt No it's still stupid and sadly unoriginal. No objectively funny person repeats memes in un-ironic situations.

@sangramjitchakraborty7845 3 года назад

@@fredspofford maybe because there's nothing like "objectively funny"? Humor is subjective.

@franceleeparis37 3 года назад

Reignited my love of science... absolutely brilliant... the pinhole camera is probably the coolest example of this principle.. and they discovered this hundreds of years ago...without any computers... the human brain is awesome..

@johnharper8237 4 месяца назад

These videos are awesome! Thank you so much for being smart and making it easier for me to understand complicated scientific ideas!

@aryansubramanian4756 4 года назад

Nice video, action lab. I would like to see more videos on quantum mechanics. You made it really easy for me to understand it. :)

@onthedepth69 4 года назад

Ya I also want video on quantum mechanics

@preciousshittu1768 4 года назад

Yeah I found this pretty helpful

@ThePrufessa 4 года назад

Do you see all the comments from people that watched the video and didn't learn a single thing?

@RexxSchneider 2 года назад

This isn't a video on quantum mechanics. It's about Fresnel diffraction.

@sonixka257 4 года назад

We found Poisson’s spot but can we find G-spot?

@dallyh.2960 4 года назад

scientists are still baffled I'm afraid

@hannesgranlund8838 4 года назад

Dont ask a nerd about that

@eathanneal9031 4 года назад

@@hannesgranlund8838 Why? They'll give you the exact coordinates. Lmao

@hannesgranlund8838 4 года назад

Yea, in hubble space...

@alejandrozuniga4426 4 года назад

@@hannesgranlund8838 gamers

@johnlannikk2701 3 года назад

Theses experiments are the best I've seen anywhere.

@XRP747E 2 года назад

Brilliant explanation. Thank you.

@DamianReloaded 4 года назад

9:00 The light went through it without actually going through it. /face XD

@yinyang1217 4 года назад

delete ur pfp

@JordanTheMann 4 года назад

I’m still waiting for him to show us that flashlight that can shine through basketballs... I must’ve blinked and missed it.

@sachak 4 года назад

LMAO

@Cheddarizbetter 4 года назад

clickbaiter

@bitorange5549 4 года назад

The waves go around the object not through anyways. This guy loves to spread his false clickbate titles it’s disgusting

@bitorange5549 4 года назад

Arin B. Jesus man don’t be so pretentious. He is referring to light of wavelengths/frequency on the visible spectrum. I’m sure you are smart enough to realize that is what I am referring to as well.

@bitorange5549 4 года назад

Arin B. In addition to my previous comment. “Light” is normally defined as “visible light”. Gamma radiation is typically not referred to as “light”. Simply as radiation.

@A.R.77 2 года назад

Seems similar to the hunt for planets around other stars. But at no time is light going through anything. You did mention that at the end ;) Love the work you put into this site.

@windninja9145 Год назад

The light reflecting off the wall gathers and reflects onto the nearest point of the shere, it's perfect centre!

@GraveUypo 4 года назад

Well, yours is definitively by far and away the best "home-made pop-science" channel on youtube. no comparison.

@MrInventer80 4 года назад

I'm soery but this guy is far behind vsauce. His explanations are nowhere near as clear.

@jxrin 4 года назад

@Mark And Veritasium.

@ujjwalbhatt4410 4 года назад

Hope vsauce starts uploading again

@MrInventer80 4 года назад

@@ujjwalbhatt4410 he's been uploading on D!NG idk why not his main channel. Maybe he's using his main channel for the youtube red episodes of mindfield he's still doing

@ujjwalbhatt4410 4 года назад

@@MrInventer80 i know the reason- he forgot his id's password by which he had made his you tube channel😑. Just wish he would be back

@PyroXeNeX 4 года назад

My mum was always getting annoyed when I'm on youtube for a long time but this stopped after I showed her ur channel (edit) OMG thank you for 133 likes guys!!!

@MammaOVlogs 4 года назад

Moukis 2.0 that is awesome from one mom to another

@mamupelu565 4 года назад

Well maybe she misses talking/playing with you.

@PyroXeNeX 4 года назад

@@mamupelu565 No she want me to study for school.... But we have summer break

@samirnawrozada1799 4 года назад

@@PyroXeNeX already?

@PyroXeNeX 4 года назад

@@samirnawrozada1799 ye😂 idk what she wants from me

@rom4you 2 года назад

Absolutely incredible 😲 thanks so much !

@mrt1957 3 месяца назад

that was probably the coolest RU-vid video I have ever seen!

@danielbennett382 4 года назад

2:47, we now know the real identity of Mysterio!

@JuankQuinteroMejia 4 года назад

LOL

@ognjenpetrovic2577 3 года назад

Jesus

@amritas2400 3 года назад

Bryt3 GOSH😂😂😂😂😂 Underrated comment.

@adamboy2120 3 года назад

ahahahahahlololoxdxdxdxdxd

@manthan_kaushal 3 года назад

My sides LMAO

@Kj16V 4 года назад

0:24 Babies be like: "No, it's actually because you cease to exist."

@HamsterPants522 4 года назад

According to the Copenhagen interpretation of quantum mechanics, the idea that matter ceases to exist when not directly perceived is actually plausible. What we see as matter when we look at it is described as wave function collapse.

@D_YellowMadness 3 года назад

@@HamsterPants522 Then what are my arms attached to when no one's looking at me? And how does the planet stick together for that matter? Sounds like nonsense.

@themechanictangerine4337 3 года назад

@@D_YellowMadness you know they are there, you are an observer-detector so they collapse into arms. So does the rest of your body. "And how does the planet stick together? That is why some scientists believe consciousness could be a fundamental property of reality.

@psyogisoma8819 3 года назад

We got a developmental psychologist in the chat

@Snoboi 3 года назад

@@themechanictangerine4337 that’s actually a really cool theory, despite how absurd it may sound

@elwhagen 2 года назад

I'm glad that the algorithm of RU-vid showed me this video. Really cool stuff!

@jwcarnal 9 месяцев назад

He should have said at the beginning this experiment will demonstrate how it appears the particles of light from a point source go through the center of a solid sphere but in fact is explained using the wave theory of light.

@xiaoshen194 4 года назад

2000s- John Cena : *YoU cAn'T sEe Me* 2019- TAL : 1:51 *You don't see me.*

@hitowshitt 4 года назад

Lmao.

@grisannetr1146 4 года назад

Oof when you said Tal I got shook I thought you meant someone else

@petrosarv1295 4 года назад

@@grisannetr1146 michael tal the magician

@grisannetr1146 4 года назад

@@petrosarv1295 ?

@setharookazoo 4 года назад

I am seriously making a t shirt of this 😂😂😂. With his face and the basketball 😂

@copperjaguar 3 года назад

5:00 when the wire shook it separated from the ball a couple times but the magnetic field was strong enough to keep the ball on it

@brianatharadriansyah 3 года назад

okay thats cool

@slutica 2 года назад

This is your best video I’ve seen so far

@AsianTrix 2 года назад

Awesome. I always love these videos.

@qingyangzhang887 4 года назад

Wait I thought Quantum mechanics doesn't really come into play here. I thought that this phenomenon can just be explained by considering light as a wave, and the lightest spot in the shadow just being an interference in the diffraction of light around the ball.

@Rahul-rp5hk 4 года назад

I have the same doubt!

@ThePrufessa 4 года назад

Yeah I think the quantum mechanics has throwing people off. I think people think the light is bending around the ball and that would involve quantum mechanics.

@gocommitbreathe21oxygen11 4 года назад

@@Rahul-rp5hk why is your name so long

@rfimor 4 года назад

QM sounds fancier than classical electrodynamics.

@alankarjamle8559 4 года назад

If it was just the interference of diffracted light then it would have depended on the distance between the ball and the screen

@nayankulkarni5131 4 года назад

This channel really has a very very genuinely informative content. Thanks for such stuff!

@shariquekhan4620 2 года назад

Great topic with brilliant presentation 👍

@miklov Год назад

Fascinating. Thank you!

@davidroddick91 3 года назад

It would be more accurate to say that the light went AROUND the ball, and the interference pattern it created resulted in a bright spot in the middle.

@hermannbrosinger3835 3 года назад

I mean .. he kind of said exactly that, a little late in the video I admit, but still ..

@limp_dickens 3 года назад

Yeah, you could explain it in a really simple, clear, objectively true way but then you won't get a bunch of people thinking "wow, science really do be like that" and that would negatively impact likes and subscribes.

@brodylockwood14 3 года назад

@@limp_dickens He had to drag it on to make it 10 minutes or he wouldn't get paid. All his videos are about 8 minutes more than they need to be.

@anodosarcade7355 3 года назад

@@brodylockwood14 if you dont want to watch videos, why dont you just read wikipedia or twitter?

@irokosalei5133 2 года назад

That's not how quantum mechanics works. The light is just a wave of probability and they constructively interfere at the center of the ball.

@edbrown6467 4 года назад

First time I've ever seen this guy. I like his approach. 👍👍

@meesalikeu 4 года назад

Ed Brown check out his vidyas he gives best explanations ever

@GreenOne01 3 года назад

This is amazing! Thanks for sharing!

@HarryAGeorgiou 3 года назад

This is one of the simplest things you can repeat at home and really cool

@cainofthejungle 4 года назад

This is amazing stuff. Very entertaining. Thanks Mr. Action. Makes my brain gears turn in new ways.

@bashbeyondultra4388 3 года назад

Im always amazed by the stuff this guy does

@aaronmurgatroyd5810 2 года назад

I would more describe this as bending the light around the orb rather than going through it as a simpler way of describing it. Of course its more just that the sum of waveforms of the light result in the waveform being focused on the middle at the opposite side of the ball, but i like just saying that it bends around the ball, its easier to understand :) Great video!

@demoaccount2392 2 года назад

You perform experiements and later explain them Keep it up

@satyamverma101 4 года назад

Okay, Action Lab .. This is the content I wanted from you... I mean Quantum mechanics is my favourite subject... But I have a question for you...Can you explain how light has no mass but still has momentum?..And at what speed does the equation of the special theory of relativity come into effect. Thanks!

@ren6140 4 года назад

It has mass. Inmsome laboratories, scientist with extremely potent lazers, vacuum zero with almost no friction, move an object. Another proof are black holes, as gravity has only effect on objects with mass, so the only thing they dont attract is nothingness

@ThePrufessa 4 года назад

@@satyamverma101light does have mass. It just doesn't have resting mass. You should go watch the science asylum video explaining this so you don't look stupid spreading wrong information in the future.

@grendel6005 3 года назад

so there is a very easy way to experience this yourself without any prep work. go outside and look at a relatively uniform part of the sky(not many clouds) and try to spot "floaters". these are the small things that move around in your vision(microscopic pieces of your eye floating in the fluid in your eye). if you catch one that is round you will see Poisson's spot in the middle of the floater. hopefully I explained it well enough.

@Tailspin80 3 года назад

Is that actually true? I always assumed the cells you see are semi transparent.

@altersami9660 3 года назад

@@Tailspin80 They are not cells. They're strands and specks of protein and other matters.

@grendel6005 3 года назад

@@JM-tj5qm it is true. I have experienced many times and encourage you to try it out for yourself. it is a very interesting phenomenon.

@roytee3127 Год назад

!!! I have a tiny round floater that shows up every once in awhile. It has a spot in the middle of it.

@johnbradstreetwilliamsthei2420 3 года назад

Thanks for getting me thinking. There are a lot of well hidden facts of knowledge that just by understanding them we think in such a different ways.

@271chrissy 4 месяца назад

I like to see this done with a clear glass ball. Great vid.

@chrisanderson687 4 года назад

This is utterly amazing! My lazy ass physics profs in college never bothered to show me this. Incredible!!!

@migs192 4 года назад

Notice that the wires also have the brightest parts in their center while the sides are "highlighted" by shadows

@muhammadnurfarhan8453 2 года назад

Great explanation ... I'm a bit curious on whether you can apply this concept into certain application

@am-i-ai Год назад

One of your best - thank you :)

@MammaOVlogs 4 года назад

Very interesting and very good explanation I see the light :-)

@imeverywhere1156 4 года назад

Yes my friend,if you see the light you are in the right path

@skrt3821 4 года назад

Momma O isn’t this your son

@jerry3790 4 года назад

A great experiment. I’ve seen it on veritasium but this was good too!

@LeopoldoGhielmetti 2 года назад

Each kind of object can cast this type of shadow and make light interfere, it's just that for an ordinary object it's way more difficult to do the math to predict how the Poisson's spot will be. So the ball has the spot, the wire has a Poisson's line and at the ball/wire contact point you have some more complex type of interference.

@sufyaanali 2 года назад

Do you know where I can the math to predict where the poison spot will be through a spherical object?

@Graphomite Год назад

Action Lab always pulls out the wildest experiments.

@alpeshpatel3213 4 года назад

Saw this on Mark Rober but he said it was because the waves were going around the circular objects and meeting back at one point

@denumelon841 4 года назад

Alpesh patel yes that is true. That’s what happens. This guy, for half the video said light goes through it. But at the end he cleared it up. He said “technically, the light doesn’t go through it. Each point on circumference of the sphere behaves like point source. Since light is a wave, these point sources constructively interfere the maximum at the Center (diffraction) and hence its brightest at Center. So it’s like light goes around it”

@meesalikeu 4 года назад

DENU MELON he did say that. yes he did.

@TheLastOutlaw289 4 года назад

So he’s lying . Thanks🙂

@Aigentcy 4 года назад

Don't fall for it It's all a bunch of non flat earth bullshit

@RexxSchneider 2 года назад

@@Sodium_Slug This isn't quantum physics. It's just Fresnel diffraction and is explained by classical wave theory. Every point at the edge of a circular object casting a shadow is the same distance from the centre of the shadow, so by Huygens-Fresnel principle the wavelets reaching there are in phase and therefore reinforce each other. No QM, just simple geometry.

@alexanderweir2382 3 года назад

7:21 That's basically how the death stars Lazer works

@bmzaron713 2 года назад

Dude you're awesome, thanks for the video

@SupertechUSA 2 года назад

I’m unexpectedly hooked on your channel. It’s so interesting. If I’m still watching tomorrow I’m subscribing!

@mymusic1360 4 года назад

He looked like mysterio when he put the metal ball up to his face 😂

@arifhossain9751 4 года назад

Well... at least the "The Amazing Spiderman cartoon series from the early 2000s" Mysterio.

@sejalsoniashivprasad5442 4 года назад

Lmfao xD

@aestivial_ 4 года назад

9:16 all I saw was a demonic eye staring back.

@natefilms684 3 года назад

That’s frightening why didn’t I see that before

@internetduck1114 3 года назад

lol

@druidism08 25 дней назад

Yea i remember doing the same thing with marbles on top overhead projector back when i was a kid and i was always wondered how did the center if the marble's shadow projection was lit

@DavidplazDuarte 3 года назад

Best science channel on YT!

@helal2488 4 года назад

How to see neighbor girl through the wall *Edit: This comment has been my most liked comment in youtube. Bless you guys.

@helal2488 4 года назад

@rgtm aa no bro you see through the wall👀

@LupeSunglass 4 года назад

@@helal2488 👀

@wic09 4 года назад

@@LupeSunglass 👀

@LupeSunglass 4 года назад

@@wic09 👀

@KogasaTatara514 4 года назад

@@LupeSunglass 👀

@sittingbush 4 года назад

Up next: *How to make table legs that don't stub toes*

@MarkusDarkess 4 года назад

Hang all your furniture from support ropes/ strings. Never stub a toe again. And less damage to the shins since they will move. But if it swings back before you move twice the damage.

@thestarforger832 4 года назад

Put a bunch of strong magnets in the ground in a circle, all facing a central spot with the same pole. Then put another strong magnet on the leg of the table with the same pole turned to that spot. Now repeat for each leg. You now have a floating table.

@meesalikeu 4 года назад

put table on quantum locked track - bump it but no worries no friction

@f1rebreather123 4 года назад

ultimate tm was gonna say that

@flowerpt 4 года назад

Quantum shoes! Or regular shoes.

@galahadgarza6905 2 года назад

What would happen if you were to set up a detector between the light source and the sphere? Would the wave function collapse? If so, what would the image being projected on your garage door look like?