You Don't Know How Mirrors Work

[@ScienceAsylum]

*Clarification:* In my quantum animations, that is not multiple photons taking different paths. It is a _single photon_ taking multiple paths simultaneously. We're releasing only one photon at a time. Adding those phasor arrows together gives us the _probability_ of receiving a single photon at any given moment. *Minor Correction:* I show the paths leaving the source at the same time and arriving at the detector at different times, when it should actually be the other way around. Paths that take more time should be leaving the source earlier in order to arrive at the detector at the same time as the others. The reason we can add the phasor arrows together is because the paths arrive at the detector at the same time.

[@MrSenger00]

It's a cool video, but I'm surprised with people saying it's a "great explanation" and "coherent" since these phase vectors (as in other video as well) does not seems to cancel out at all, I mean I don't understand, how do they cancel? The Sum vector for them (from the beginning of the first arrow to the end of the last one) is pretty big and I'd assume that IF they cancel THEN it would be close to zero length, this is a huge inconsistency for me... @The Science Asylum please explain this Nevertheless the part with removing parts of the mirror was super interesting, can this be visualized with a real-world experiment? Is a demonstration even possible?

[@ScienceAsylum]

@@MrSenger00 The only reason they're not perfectly canceling in the video is because there's only 13 arrows in the animation. In reality, there are an infinite number of arrows. There are many arrows for paths _between_ the ones I've shown and many more arrows for paths _off screen._ They would cancel better if I considered 100 paths or 1000 paths instead of 13.

[@TheEmergingPattern]

In reality it is the holographic principle taking the whole experiment setup into account. Also the color of the fotons and the gap distances on the mirror have an effect...

[@fberron]

Sorry, sorry; I didn't get the Minor Correction. How can the SAME photon leave the source at different times to arrive at the detector at the same time, if it´s the same photon?

[@TheEmergingPattern]

@@fberron haha, it's a cool video and some people really pay attention. :-)

[@Zdman2001]

The best videos are when you take something you think you understand and apply Quantum Mechanics to it. It's a mind blower every time.

[@shayanmoosavi9139]

Quantum mechanics is like hot sauce on foods. It enhances the flavor, not many people like it and we can't handle too much of it. It's repulsive and attractive at the same time.

[@cheydinal5401]

Pizza, but quantum mechanics

[@0626love]

To be honest, I don't understand anything until quantum mechanics come in to play.

[@cheydinal5401]

@@0626love Really until?

[@danilov114]

After that you can make a video of how last video does not understand QM...

[@FriedrichHerschel]

What I liked is that the explanation went gradually deeper into it, "layer by layer", from the macroscopic law of reflection to a single photon ... with a few steps in between. It's propably the best way to educate a general audience.

[@sanchezzz69420]

amen

[@louis-philip]

I thought I understood mirrors. I understand mirrors even less now. And that's a compliment.

[@iforgoree]

I never understood mirrors and i understand even less now 👁️👄👁️

[@henrik.norberg]

I thought I knew I understood mirrors, now I know I don't...

[@Diamonddrake]

As Feynman said, at some point you have to accept some things just are, and build your intuition and understanding on top of that.

[@thespicehoarder]

I totally Dunning-Kruger effected myself too with this one.

[@andregustavo2086]

@@iforgoree if you think you understand quantum mechanics, it means you actually don't, but if you think you don't understand QM, it means you do.

[@tachzusamm]

Man, you can't guess how many explanations I've seen in my life why mirrors don't flip - but the example with text on a sheet of paper which you watch from the backside was THE eye-opener. Bravo.

[@SimonBuchanNz]

Of course they flip. They flip near to far. The fact that the text looks backwards is just a natural result of the inversion of the cross product of the.. oh no he's gone cross-eyed.

[@MrJohnA125]

You can do the same with a single cut out letter ~ use F and hold it in front of a mirror to prove it doesent reverse things

[@Corn0nTheCobb]

@@MrJohnA125 shouldn't that be obvious? If you can do it with a word of text, of course it would also work with a single letter.

[@vemo2474]

This channel is the most underrated in youtube. Such a great content with coherent explanation.

[@IshaaqNewton]

Absolutely

[@anish_chapagai]

Agree

[@marat61]

I like this Chanel too

[@gearhead1302]

Ya that was really good I'm glad I watched it. I had legitimately never heard that explanation before and had no idea it was based on probability.

[@pizzapizzadesu]

He should become a meme to get known. Thats how it works on itnernet.

[@clieding]

“Mirror, mirror on the wall, was is the probability that I can see myself at all?

[@navycalvin9337]

*Actually, Quantum Physics Forbid This*

[@niharikatasnim939]

DAMN

[@anomalousdelirium]

But... it's "Magic Mirror"

[@solapowsj25]

No. Time dilation.

[@uRealReels]

@@navycalvin9337 forbids what? reflection?

[@snowthemegaabsol6819]

Everyone: Mirrors are simple. Light goes in one way, it comes out another way. Internet plebs: Mirrors are simple. When light hits the reflective coating on the surface, it bounces at an angle according to the law of reflection. Nerds: Mirrors are complicated. A usually silver or similarly reflective element that is electroplated onto the surface to serve as the mirror, will absorb incoming light, and vibrate. Those atoms will begin to emit their own light, in all directions, most of which destructively interferes except for in the directions that happen to match up with the predictions of the law of reflection. Nick: So imagine a micro black hole and a brick wall edit: guys I'm literally memeing, stop being annoying

[@hubertheiser]

Well, we don't need the black hole and the wall really, we just need to understand path integrals. The black hole and the wall are just a tools to do so without calling it "path integral". (I hope "path integral" is the correct translation of the German "Pfadintegral"? If not, please forgive me.)

[@Lucky10279]

@@hubertheiser I don't know German, but path integrals (more commonly called line Integrals, though this is a less accurate term) definitely seem like the right term for what Nick was describing.

[@tomkerruish2982]

@@hubertheiser "Path integral" is correct. The path integral formulation of quantum mechanics was the subject of Feynman's doctoral dissertation.

[@lorekeeper685]

Welp

[@tapferetomate914]

@@Lucky10279 For example, work would be a line integral of force. (in german: Linienintegral). A pathintegral is a integral of a functional with respect to a function. That's somewhat of a different thing. In the line integral we integrate over one fixed path (i.e. a vectorlike function) that basically serves as an Integration variable. A path integral on the otherhand sums the Integrand, a so called functional, a function of all possible paths, given as all possible vectorlike functions, by all these different paths, i.e. functions. One could say a path integral is the generalization of the line integral, but they are really just different concepts.

[@mrmkl9839]

0:08 "They seem like they're pretty easy to understand... OR ARE THEY?!" 😂🤣 I sense Michael here

[@Pikachu-vo7qb]

Hey vsauce!!!

[@SauceyRedHN]

H Michael here

[@trickvro]

"Hey, Science Asylum! Nick here."

[@carpcarpbread]

This video is a great example of quantum mechanics used in everyday lives: as for that last question, I’m in a superposition of yes and no.

[@thun7der]

Me in high school: why doesn't this guy get millions of views? Me in college: why doesn't this guy get millions of views? Me in university: why doesn't this guy get millions of views?

[@pizzapizzadesu]

hi brother

[@thun7der]

@@pizzapizzadesu oh hey joe

[@aasyjepale5210]

Me 6 feet under: why doesn't this guy get millions of views?

[@dweazful]

Me in High School: "I hate math. Physics has math. I probably hate physics too." Me in University: avoids any STEM-related subjects and studies [insert useless liberal arts subjects] Me now: watches physics videos on KZbin and wonders why high school math & sciences teachers never teach like this

[@joshanonline]

Don't expect anything good from KZbin anymore. We'll be lucky if they don't ban Nick for not being good enough for advertisement. Their algorithm only favors the famous youtubers, little ones have been disappearing for a while and will vanish even more soon.

[@whoeveriam0iam14222]

people: magnets are complicated. how do they work Nick: have you ever really thought about mirrors?

[@guywittig5069]

Ha ! You have no idea how interesting magnetic fields are. “Relativistic effect of moving electric charges” Feynman. Definitely worth a video.

[@altrag]

@@guywittig5069 kzbin.info/www/bejne/jpTdfoWpntZso80 already exists (though I think it was part of a 3 or 4 video series IIRC, so you might have to look up related ones.) Should also look up minutephysics' take on the subject.

[@ScienceAsylum]

@@guywittig5069 How Special Relativity Fixed Electromagnetism: kzbin.info/www/bejne/f5qao5p_hsaqodE Also, here's a whole playlist of E&M videos: kzbin.info/aero/PLOVL_fPox2K9MtRv68T_cmWwQUbg9YR4F

[@swaree]

Therapist: Symmetrical Einstein isn't real, he can't hurt you Symmetrical Einstein: 1:00

[@uesdtosignin1038]

It is so Super Symmetry.

[@nanigopalsaha2408]

It is so creepy

[@ChrisandBobsAdventureChannel]

Every video you produce feels like a single piece of an insanely large jigsaw puzzle. This video is definitely an edge piece!

[@ScienceAsylum]

An "insanely large jigsaw puzzle" is the single best description of physics that I've ever seen.

[@FjorimDerHuene]

@@ScienceAsylum once I was asked to ELI5 what debugging software was like. My response: Imagine a big jenga tower where you need to replace a block in its center. Now replace each layer of the jenga tower with a 1000 piece puzzle...

[@sk-sm9sh]

@@FjorimDerHuene what sort of software field you're working in? I'm doing software development for a bit over 10 years and can't recall single instance where it would had been as bad as you describe.

[@FjorimDerHuene]

@@sk-sm9sh I may have exagerrated a bit to get my point across 😁 and it's only as bad as that if you're debugging legacy code that you didn't write yourself. Nowadays the experience is way better. Some occasions aside...

[@n0nenone]

@@ScienceAsylum I say "why is glass transparent" by Ted-ed And now even after your explanation, idk why mirror reflect 99% photons it receives even though it's 99% empty space and probability wise.. it should reflect like 1 or 2% of original intensity of light.... Can you explain?

[@specialkender]

This video is brilliant. I have a degree in chemistry and just the other day I had the biggest impostor syndrome attack cause i realized i didn't know how mirror really works. I am now one step further from the perpetual abyss of ignorance.

[@Legatron17]

sus ඞ

[@Bollibompa]

@@Legatron17 Ugh...

[@shashankhrishikesh1573]

lol

[@thetrickster9885]

As a high school student, i feel that every day haha. Whenever i go deep into anything i come to know that i dont know ANYTHING

[@ulti-mantis]

"It's okay to be a little crazy" Quantum physics takes that phrase and runs with it at the speed of light through all possible paths simultaneously...

[@jordanfry2899]

When you explained how mirrors don't actually flip images that kinda blew my mind.

[@gawain78]

That's quite funny because my reaction was: "OMG that is what I have always thought!"

[@fredgotpub871]

It flipped my mind !

[@MusicalRaichu]

actually mirrors do flip things, just back-front, not left-right as most people think.

[@Lucky10279]

@@gawain78 Yeah, me too. I figured it out years ago, as a kid.

[@q-tuber7034]

Thanks Nick for getting this right! Vsauce got it wrong.

[@ottovon5182]

When he said that the girl in painting is looking at me, I got real scared

[@ScienceAsylum]

You should be. Those red eyes are freaky.

[@guidogaggl4020]

@@ScienceAsylum hahah i laughed so hard for this one

[@thebeanz6593]

Same

[@p0pacherry]

Were you going to town on yourself?

[@rajaradi802]

Me too

[@benjaminsmith4058]

Major kudos for not diluting the explanation and still giving a clear answer. I was expecting something to be over-simplified and was pleasantly surprised. Very well done!

[@danielkoprak4243]

"shut up and calculate is a famous motto in quantom mechanic" thats exactly why i cose mechanical engineering.

[@wesjohnson6833]

"Shut up and calculate" was actually written by N. David Mermin as what the Copenhagen interpretation meant to him. It was a complaint or a derisive remark. Much Like Fred Hoyle deriding the "Big Bang". In the same vein, Einstein said he would have named his theory the "Theory of invariance" had not Planck already dubbed it the theory of relativity. Memes are alive.

[@moiquiregardevideo]

Shut up and calculate to make sure that bridge won't collapse on the next windy day.

[@arnaudj2708]

well, shut up and calculate is a great way to describe how finite elements analysis work

[@karlvuleta]

I definitely understand how mirrors work, thank you! 10 minutes later: okay, maybe I didn't..

[@zas3362]

came across your channel two days ago and only question is why on earth are people not watching you more and as for your videos they are really great

[@sanketvaria9734]

because most of the people are simpletons.

[@zas3362]

something we can be sure of even on applying quantum mechanics

[@Soupy_loopy]

Why did you wait until a few days ago to start watching?

[@zas3362]

@@Soupy_loopy well i needed to think about what he explained.

[@kripashankarshukla4073]

Nick my favourite the one who teaches everything in the unique way that nobody does and nobody can teach like you phenomenal!!

[@thingsiplay]

Imagine he was your teacher in school.

[@TechToppers]

I would dance

[@nineball039]

@@thingsiplay Then you would have to do the math.

[@mrzabie0138]

Nick, you are an incredible teacher. There aren't many people producing content quite like you can do.

[@MrStephenRGilman]

When you stare into the abyss there's a non-zero probability that the abyss stares back at you.

[@billhinge9403]

nice one

[@fdavillar]

I missed a warning signal saying "Do not Feed the Black Hole".

Haha I got that

[@chachnaq7337]

"Or does it?!" *Hey vsause, welcome to the science asylum*

Vsauce brought me here, in fact

[@gale7682]

vscience

[@chachnaq7337]

@ me too

[@Lucky10279]

Oh, they should do a collab!

[@EpitomeLocke]

@ wait really? Vsauce recommended thescienceasylum?

[@faikerdogan2802]

loool i was like what could be interesting about a mirror, boy was i wrong

[@shayanmoosavi9139]

Lenses are even better ;)

[@hoffmann-photography-Syke]

Hey, that was the beginning of chapter 2 of Richard Feynman's book QED, but the animations are much more fun! Great work!

[@ScienceAsylum]

Thanks! 😊

[@bluesillybeard]

me before watching: how do mirrors work? me after watching *HOW DO MIRRORS WORK??!?!?!!?!?!*

[@stormlord1984]

Among the top 5 science educators for me, both in terms of concise explanation, no unecessary pandering and keeping my interest throughout. Finding this channel in late 2018 was amazing.

[@IshaaqNewton]

Me: 7:17 When someone asks me, "Does electrone move by orbiting? "

[@ScienceAsylum]

It pretty much sums up anything in quantum mechanics.

[@ekrem_dincel]

@@ScienceAsylum Hi Nick! I was want to know why the reflection angles of light are equal , and that is the only thing i found about that topic. I want more videos on reflection and reftacting. Thank you for those videos!

[@ScienceAsylum]

@@ekrem_dincel I want to do one on refraction too.

[@el7284]

@@ScienceAsylum oh dear God no.

[@ekrem_dincel]

@@ScienceAsylum Thanks you. You help us to understand physic well.

[@calyodelphi124]

Not only do I feel like I understand mirrors better, the more you dive into the quantum physics of real-world phenomena, the more I start to understand quantum better, too! You are doing an incredible service to your audience, and you absolutely should not stop anytime soon. :D

[@RV-fc9eo]

3:28 YES! YES! EXACTLY! Warning: Do not try this in your class. You will: a) Be told to focus on the syllabus b) Be yelled at and called oversmart c) Ultimately be confused till you Science Asylum and chill

[@rogervanbommel1086]

I did this(a few times), my teatcher always explained it

[@OddSoxChris]

I will never look in a mirror the same way again...

[@brendonwyer8863]

Chris Z. Ha! I see what you did there...

[@Soupy_loopy]

I turn my back to the mirror, that way my face doesn't appear to be flipped.

[@manuelb__r]

Such an amazing way to explain hard things without letting details hidden. This is one of the best KZbin science channels ever... Should have millions of subs!!

[@capitaopacoca8454]

Br?

[@chrissscottt]

Whenever I feel that I have a reasonable grasp of reality I know I can come here and have those illusions shattered.

[@nitsanbh]

The “Yes! Kind of. Not really. Ah, maybe” Part was awesome

[@craigsymalla25]

You crack me up whenever you get to quantum mechanics. That bit about taking out segments of the mirror yet the photon can still hit the black hole brings a whole new visualization of quantum mechanics. Absolutely amazing.

[@daniellassander]

This is really one of the best science channels on youtube :)

[@daniellassander]

Thank you sir for the heart. I will eagerly look forward to the next video :)

[@Siccmann]

Let's all promote this legendary channel. I've never seen such a great channel that explains science and all things and events so well like this channel does. Absolutely amazing!

[@bdpc-dk2xb]

So when I saw this title, I was a bit disappointed. I mean, mirrors sounded boring to me. But holy cow, this was fascinating. I should have never doubted the Science Asylum

[@js7244]

An introduction, in 10 minutes! to quantum electrodynamics! Beautiful job!

[@MattGregoryGuitar]

3:14 - nice touch with the terminator eyes!

[@GottfriedLeibnizYT]

5:20 "How cool is that!?!" VERY. I actually happen to be an engineer and studied detailed laws about reflection like for example how a reflection with an E-field being normal to the plane of incidence differs from another wave having a B-field normal to plane of incidence. But never the mechanism! I learned something new here. Thanks!

[@ScienceAsylum]

You're welcome! 🤓

[@geraldfrost4710]

A true scientist tests his hypothesis, and if if fails it's back to the drawing board. Get it wrong, and you've crossed a wrong idea off the list.

[@mal2ksc]

I saw the animations and thought "holy crap, it's acting as a phased array", and then realized "no, a phased array is trying to simulate that, stop being so anthropocentric".

[@hoggif]

I glad mirrors don''t flip anything. That removes the question why they flip you horizontally, but not vertically. Thanks for another great video!

[@Lhoizae]

This explains it very well: kzbin.info/www/bejne/rHPTqZucd9GJgrc

[@amaljay8158]

Actually mirrors flip in the direction normal to its surface. If you're looking at a mirror, the image is looking at you.

[@otakuribo]

"Why explain the math with symbols when you can explain it visually?" *Yes! Yes! Yes to the power of Graham's number!*

[@PMA65537]

At work someone said Graham might be able to help so I said they could call Graham's number but it might take a while.

[@achinoammeyuchas8362]

7:37 "Shut up & calculate!" summarizes my experience with quantum mechanics beautifully XD

[@professorlucasgroenner5117]

I have been questioning myself how mirror actually works for about a decade. I had the feeling it wasn't that obvious all this time... but never went deep enough in the quantum mechanics to understand it. Thanks to you my mind blew... and it was amazing!

[@kombasanpracka]

WOW, that probabilistic part of the video where the non canceling waves reach the target even if they don´t obey the Huygens principle was a big surprise for me. Now I have a clue how to understand diffraction. Such a simple thing (at first sight) and yet so educative. Thanks a lot for this great vid.

[@ronnyvbk]

Just wait now for the next leap ... nano structures exhibiting negative index of refraction (will include a to the timeline) and their practical applications like superzoom and invisibility cloacks ...

[@matteodelgallo1983]

As a physicist, I wasn't expecting that much, I certainly wasn't expecting such a great video inspired by a chapter of Feynman's QED

[@danresler6816]

Not to mention explaining it faster and better than Feynman!

[@LouisHansell]

Nick: While I was watching this, my wave function collapsed.

[@malekmannai9445]

xD

[@brendonwyer8863]

Louis Hansell lol!

[@lukeskywalker7457]

Almost skipped the video because it was about mirrors ... Amazing! Thanks for introducing quantum into mirrors. I have a new perspective now.

[@SimMaster]

1:35 Holy crap, I threw my phone down and walked away, thats how much my mind was blown

[@paramountx]

Lmao 7:17 - 7:24 cause when he asked the question I was basically saying the same thing you were. Lmaoooooooooooo

[@aleiaaboutaleb8767]

I love the way you explain. You make me understand all those difficult notions. Thank you

[@darkiusdark5452]

I love how you simplified Richard Feynman’s interpretation of this trick called Reflection! Great work body! (Feynman version was simplified, yours is oversimplified).

[@MitzvosGolem1]

Awesome Feynman lectures

[@dcsignal5241]

I remember those lectures too, so much easier to follow with Computer graphics than a Black Board and Chalk.

[@MitzvosGolem1]

@@dcsignal5241 yes I am 80s physics grad

[@jaredhouston4223]

I feel so privileged to live in a world with computer graphics, I have no idea how people managed to comprehend these ideas without these tools. Something about imagination and hard work. It really makes non-euclidean 6D differential vector calculus a lot easier to understand.

[@pauncristi5557]

Yeah exactly what I wanted to comment, it's Feynman lecture with modern graphics!! The best of both worlds :)

[@ArmiaKhairy]

"It's just probabilities" is my new favorite quote.

[@the_eternal_student]

That visual with the mirror in the painting was neat.

[@quamch2774]

That was a simple, of considerable depth, explanation. Loved it!

[@kellyjackson7889]

Possibly....Probably

[@arnabkarmakar0000]

I wish I had a physics teacher like him in my school days .. Great explanation indeed.

[@NielsCG]

4:26 SUPERZOOM!!! Hey Nick, excellent video!! thanks for the mind-blow

[@tahsintahsinuzzaman781]

I remember watching your videos a long time ago and then after a while, I forgot the name of your channel. I tried searching and searching for your channel/videos, but I couldn't seem to find it. Until FINALLY, today, KZbin recommended me one of your videos (finally recommendations that are useful) and I realized that THIS WAS THE CHANNEL I WAS LOOKING FOR!

[@ScienceAsylum]

Welcome back! 😊

[@darrellseike3185]

Super video that not only helps explain mirrors, but also shows how counterintuitive QM really is!

[@DeclanMBrennan]

Fantastic graphic on vector addition and the extremes cancelling each other- talk about a picture being worth a thousand words !

[@bobcatgaze]

I'm still trying to wrap my mind around the idea that beams of light are not actually beams of light, but just waves of energy interacting with each other.

[@the_hanged_clown]

mirrors: where if I can't see you, you can't see me actually applies

[@ScienceAsylum]

Indeed!

[@Lucky10279]

Unless you're a vampire! Lol

[@yvrelna]

That's only true if you're just seeing eye to eye. In certain angles, as long as I avoid pointing to your eye, I can see your other body parts while you won't see any of my body parts.

[@the_hanged_clown]

@@yvrelna very true. also I wonder if our eyes were in a vertical line instead of horizontal, would the flipping effect follow suit?

[@thomaskaldahl196]

I honestly think rule 8 should be modified to include questioning the 10 rules. You should question everything, even the basic assumption that you should question everything!

[@JohnBender1313]

Feynman gave a talk on mirrors and it blew my mind.

[@playgroundchooser]

Me at 4:46 ... Hey, are those adding up in a line going the "wrong" way? 10 seconds later... 😃😃 I'm learning!

[@joshuacoppersmith]

Really reminded me of the great New Zealand Feynman lectures. Thank you! I was about to request this video when I saw your video on the types of reflection. So many (even more-or-less reputable) science channels get "flipping" wrong, when it is fairly obvious (and things don't come obvious to me very often). The cutting out parts of the mirror thing toward the end is really fascinating.

[@ScienceAsylum]

Those Feynman lectures are linked in the description 😊

[@blainehoopes2153]

This is a terrific video. It's so difficult to come up with a way to show this stuff in easy to understand visual explanation but you've nailed it!

[@ScienceAsylum]

Thanks! 🤓

[@harsha015]

I'm an ordinary student. But I had this question in my mind that the reflection of light, EM waves was not the axact thing we are taught of,I tried to find an answer.And when watched this video It came in to my mind that I have go further to get a wholsome answer. Yet I'm very glad to know that my question is more worthy than I thought. Thanks for this video.

[@aaronsprojects9622]

I love quantum mechanics. "How does it work?" "Yes"

[@rnez99]

When he said "or does it?" the quantum probabilities of Vsauce being in the video intensified.

[@sampson4844]

I finally get the answer I want,bcs my high school teacher don't even know how to explain(or don't even know) why mirror reflect like that

[@irrelevant_noob]

you mean "like that" as in left-to-right (apparently), or "like that" as in at the same angle? :-B

[@sampson4844]

@@irrelevant_noob "why same angle?" My teacher :"light behave like light"

[@chriswesley594]

This is another extremely good video - thank you. I've previously found what TV people would call your "treatment" annoying - seemingly aimed at children, but the sheer quality of the content trumps that. I visit Physics forums peopled by PhDs and I ask the kinds of questions your vidoeos answer, and your answers are clearer and seem more correct. This one gave me the glimmer of insight on an issue I've been asking for years, with no answes emerging - the fundamental reason for diffraction. WONDERFUL. It seems clear to me that your content is up with the very best in the world - Veritasium etc. I still think your treatment is holding you back, but I've come to look forward to "hey crazies" and I wish you all the best for an explosive (in a good way) career on YT.

[@giin97]

3:15 lol, love that touch.

[@microwave221]

I've made sense of how mirrors reflect without flipping before, but seeing the word through the paper caused something intuitive to shift into place violently enough that I had to pause the video for a moment

[@microwave221]

And again when you tricked me into learning about diffraction

[@PreezyBaby420]

8. Question everything (EXCEPT THESE RULES) lmaooo. Touche.

[@suyashverma15]

You always manage to add something to my knowledge and imagination, and I am grateful to you for that.😊😊

[@dakotahballard6755]

I watched this being like yeah I know how a mirror works challenge accepted. I did not.

[@roseabdi9455]

Ok.. at that painting part..I got goosebumps.. hope that won't hunt me at my sleep..

[@outworld15]

This channel's content MUST be transmitted on TV. İts fame is severely underweight. Seriously...Maths, Physics and Sciences in general would permanently lose its perceived intimidating character. This guy should head at least an university.

[@JavierArveloCruzSantana]

I'll reflect on this lesson, then I will probably come back to it.

[@kriss0214]

This channel is absolutely amazing, I feel crazy enough to be admitted to the Science Asylum after watching 😂🤪

[@jerry3790]

Set phasers to stun!

[@ssssssssssss885]

Best youtube animation of the mirrors part of Feynman's famous QM lecture.

[@dman375]

Dude... I don't know how your views aren't 10x higher... You have some of the best, most fun, and well-explained content of this type on youtube... period... hands down!

[@tarun.starboy]

I've waited for so long for this video.

[@DarkMage2k]

The title feels like it's challenging me.

[@ekrem_dincel]

So who won?

[@djd829]

I just randomly ran into this, and it perfectly answered so many questions that I had while thinking on a boring treadmill run the other day, and then some. Great video.

[@ScienceAsylum]

You're very welcome 😊

[@arunkumarpv2003]

Oh! I remember the "arrow" addition from Feynman's Lectures in Path Integrals :)

[@valsaat9032]

I know this is an older video of yours, but I just love it, it really made me cheer :)

[@ScienceAsylum]

Thanks! 🤓

[@kbbeats3099]

Well I'm not first, but I'm not last. Hi Nick!

[@ScienceAsylum]

Hi!! 👋

[@cidfacetious3722]

"What's physically happening depends on your favorite interpretation" well that's the least scientific thing I've heard this month LOL

[@ScienceAsylum]

Welcome to quantum mechanics 🤷‍♂️

[@Adraria8]

That’s basically a playful way of saying we don’t know

[@cidfacetious3722]

@@ScienceAsylum you know what i mean!! I interpreted it as God playing bust a move with really small balls

[@ScienceAsylum]

It just means we don't know enough about that level of existence to answer questions like "what's really happening?" The best we can do is say "the things on this list definitely _aren't_ happening."

[@cidfacetious3722]

@@ScienceAsylum I know man I was being facetious it's in the name! LOL

[@anthonyb5279]

DUDE! YOU NAILED IT!!!!! but you should have brought up Bernoulli and Newtons proof of the brachistochrone using optics.

[@markotrieste]

I come periodically back to this video. Every time I think I finally got it. Some time later, my brain wave function collapses and I am like "wait, this makes no sense"... back to square one.

[@ScienceAsylum]

Brains are like that, unfortunately. "Use it or lose it." I have to keep reviewing things too so I can keep them in there.

[@kitesurf4life]

4:31 " I know it's not always silver, just go with it" : you just killed a troll :D

[@ScienceAsylum]

😆

[@Diamonddrake]

Technically it’s equally valid to say the probability distribution describes diffraction. The probability says what to expect not WHY to expect it, and as a model it doesn’t care about “why”. The reason why physicists try not to use reflection is because it aligns so well with momentum and as light is massless, and often viewed as a wave they seek another explanation. Intuitively light behaves as a particle with elastic collision. Cut a hole in the mirror and you could imagine some of the particles bouncing off the rim of the hole and finding their way to the same path a reflection would have taken. That’s a WHY, that probability can quantify, but “maybe every atom hit with light produces it’s own light that sums to light going according to our expectations” is a much less tested and less testable theory with its math designed to give the answer we want. Saying “mirrors reflect because of probability” is a much less appreciable statement than “light bounces off of smooth surfaces according to probability.