I love this channel. It's so underrated. No fancy graphics or animations. You cut through all the gunk with simple and clear explanations.
@jsmunroe6 жыл бұрын
I think you mean understated, lol. He's got 809,000 subs.
@Raxilla6 жыл бұрын
Jordan Munroe He should have more.
@Slepepe6 жыл бұрын
not underrated anymore.
@legonut783 жыл бұрын
And not choked full of commercials and advertising.
@realvoidbla48812 жыл бұрын
@@jsmunroe 3.8M*
@JamesSamples3 жыл бұрын
I never realized that the split could be done on a low budget. That's cool!
@johnbuck51813 жыл бұрын
This whole channel is the most info for the lowest cost to make. Not an insult at all. It even featured “Da Vacuum Box”..as a table.
@gyro5d3 жыл бұрын
Use a laser and a straight pin.
@Nosezeichen3 жыл бұрын
Actually it isn't the real double slit experiment, but the results are still the same. The original experiment shoots one particle at a time, which splits at the double slit and afterwards interacts with it self and is measerued at the backplate. If we repeat this for a while we see the interferance pattern, whose amplitude corresponds to the probabilty of the particle beeing measured at this point. Only by shooting one particle at a time but still getting the interference pattern, you can proof that light is both a particle and a wave. If it wasn't a wave we would have no interference and would end up with two slits at the backplate (when repeating the experiment). Also the interference pattern does not exist when we measure through which slit the particle went. Simplified, measuring means physically poking the wave which collapses it to a particle again, so no interference and we end up with the two slit pattern again.
@pavel96523 жыл бұрын
I think it can be done with the sunlight as well. This is how it was done in the first place, as they had no lasers back then ;) Veritasium has a video with a large cardboard box. The sunlight, however, produces the pattern in multiple colours.
@jonathan16133 жыл бұрын
Back in 2005 I successfully replicated the double slit experiment using a laser as well and found out for myself how cool physics and reality really are...
@suga4all3 жыл бұрын
Great explanation. Love your videos. But here, a little mistake slipped in at 1:20: In order for the double slit experiment to work, you don't need plane waves. It also works with curved waves in the same way. The reason why it doesn't work with a light bulb is the low spatial coherence of the light in this case (which is an entirely different beast than curvature). It basically means, that because the light bulb is an extended light source, the light waves incident on the slit are coming from many directions at the same time. So they create many of these interference patterns which are mutually shifted and therefore wash each other out. Fun fact: If you place the light bulb very far away from the slit, it would in fact give you an interference pattern also in this case (with very low intensity though).
@swayammm__3 жыл бұрын
I feel like you are getting ignored
@bojan822 жыл бұрын
Thank you for the clarification.
@mggt46842 жыл бұрын
I think its obvious once you understeand the concept which I think he explained perfectly.
@realvoidbla48812 жыл бұрын
The Action Fail
@lazysingledaisybronwyn81052 жыл бұрын
Suga4all, good to know. Did you notice the red light created a bulb-dimensional affect? And the blue light made a strict wall with ability to make a shadow immediately in front. Meaning, red moved away and caused a round bulge going away from us and blue caused a coming towards us with a flat wall shadow. The Red light was a real good for NOTHING liar. The blue was honest and real. So, red light makes for time and distance, a lie. Blue makes for what "is", truly. This is why the farthest thing we perceive in distance away from us is actually what is closest to us.
@tylertalsma77943 жыл бұрын
You basically explained quantum mechanics in a simple way it's amazing.
@Zimrack2 жыл бұрын
Why does quantum mechanics feel like intuition.
@noahway13 Жыл бұрын
@@Zimrack What do you mean by Intuition?
@andrandr49742 ай бұрын
Ok but no .... Schrodinger cat bro. 😮
4 жыл бұрын
This guy just made my Physics class so much more interesting
@sahityamhalder70983 жыл бұрын
It is interesting already 😋
@micro-playsquitted41323 жыл бұрын
Nope physics is not interesting without this video bro
@ZERO36906 жыл бұрын
People are particles, but when you put them together, they act like waves
@LeemaxxLyrics3 жыл бұрын
that's a cool way of thinking about it
@94Newbie3 жыл бұрын
that alone isnt actually correct. even in experiments with individual photons they act like waves, interferring with themselves. same is true for other particles. its the propability that takes the waveform regardless of the number of particles.
@christianlabanca53773 жыл бұрын
@@94Newbie true. But he was talking about people, and if you think about it, he's right haha. But yeah you're correct
@linkin5432103 жыл бұрын
Only Mexicans
@dattatrayakulkarni48733 жыл бұрын
Good example.
@Johnny-tw5pr6 жыл бұрын
You should do the last experiment with blue light.
@faridpramudya78965 жыл бұрын
yuupzee
@MadhawaSadil5 жыл бұрын
Johnny.50 yeah
@tenrabbits30695 жыл бұрын
QWERTY
@Nesrr185 жыл бұрын
Yes, i just wanted to write the same thing 😁
@thedarthknight79605 жыл бұрын
Ummm why is that?
@anujsinghchauhan246 жыл бұрын
This video really made my whole day. :) The best part is explaining such topics with simple, easy and fun experiments. You are doing a great job. A video on Heisenberg's uncertainty principle is requested. Thanks. (Love from India.)
@AnilSharma-js7fi4 жыл бұрын
L
@vertigoz3 жыл бұрын
If only the double slit was to be made with blue light, perhaps we would see it painting it wide spread
@georgeplaxton30673 жыл бұрын
When studying precious stones (opal), we were under the impression that different colours expressed was the micro beads in the silicate were of different sizes and behaved like prisms, re-enforcing individual colours (red, green and blue).
@micro-playsquitted41323 жыл бұрын
"micro beads in the silicate" My name is Micro
@gbye0076 жыл бұрын
Light has the properties of a quantized wave: neither wave nor particle, neither fish nor fowl. The particle characterization of EMR has been superseded by quantum field theory. You don't need to invoke particles with momentum to explain a transfer of energy from photons to electrons. None the less, your double slit setup with the laser pointer is fun to see.
@dominickscott44545 жыл бұрын
“Then after you’re thoroughly confused, I’ll explain what light really is.” I’ve never related more to anything in my life
@spicymemeboi26466 жыл бұрын
light is actually made of lasagna
@itme56576 жыл бұрын
Spicy Meme Boi stop being such a troll, that's so stupid, lasagna is made from light not vice versa. Duh
@overweightowl22956 жыл бұрын
Emit lasaga
@thatguy-zester35006 жыл бұрын
The action lab is a lasagna
@xMOSEScb6 жыл бұрын
Light is actually a bitch lasagna. Weird flex but whatever.
@Kris.G6 жыл бұрын
Bitch lasagna!
@cjheaford3 жыл бұрын
Why didn’t you: Use the BLUE light with the make-shift double slit on the glow paint? Would we have seen an interference pattern? Particle like result? Both? We will never know.
@42ZaphodB423 жыл бұрын
@@Luuuuuuuuuuuuuuuuuuuuuuuuuuu Like the blue flashlight. Not the red bulb.
@sealofapoorval74373 жыл бұрын
He did
@cjheaford3 жыл бұрын
@@sealofapoorval7437 Not through the double slit
@kimunpark21923 жыл бұрын
Making interference pattern with the blue light is not easy because its wavelength is short. I guess he failed to make it at home. And it would lit the glow paint in the shape of the interference pattern.
@cjheaford3 жыл бұрын
@@kimunpark2192 That makes sense. Never thought of that.
@PhilTibble3 жыл бұрын
So approachable and down to earth yet passes on so much knowledge. I love the genuine excitement. give this guy a laser pointer and a sharpie and some space in his garage and he makes me feel like I am learning more than I did in uni! yo PBS or TVO or BBC or someone get this guy a show!
@orobinson74296 жыл бұрын
I wish there were a better(easier)way to explain the delayed choice quantum eraser experiment. Great job on this video!! Keep it up!
@TheActionLab6 жыл бұрын
My favorite experiment:)
@orobinson74296 жыл бұрын
kelan andersson so it is as confusing as I originally thought!! Thanks for the link, I liked it.
@sawwil9366 жыл бұрын
The Action Lab, wanna see the wave function?? I have a bunch of experiments showing it. Also got the electrons probability cloud nailed down.
@robinjahn12946 жыл бұрын
wow, that just explained to me how the electron orbitals work better than my chemistry teacher could in a decade xD (seriously, i`ve never really understood how orbitals work but now i do). Thanks for all of that science input, you can explain it like nobody else could
@blusky35916 жыл бұрын
rubi_style Well i was astonished too! I used to think electrons follow just a single path orbiting the nucleus.
@hihtitmamnan6 жыл бұрын
wtf? looking into wikipedia would fix ur problem in 1 minute...
@chrislayne94406 жыл бұрын
So basically: Schroedinger's light.
@sbravoo4 жыл бұрын
this is the experiment that started the quamtum physics
@curiouschildalways89914 жыл бұрын
Does that mean red light wont charge a glow in dark area
@Palladiumavoid4 жыл бұрын
@@sbravoo that was the move that made scientists cry
@sbravoo4 жыл бұрын
@@Palladiumavoid yeah lol
@longleaf12173 жыл бұрын
well... I mean yeah, kinda, not really though. the cat thought experiment Schrödinger proposed was meant as a way to explain just how weird quantum phenomena is. he was trying to get across the idea to the general populace how it makes no sense that light (and indeed any particle) should behave both as a wave and a particle simultaneously. normally waves are nothing but the transmission of energy through a media (such as the ocean), the particles themselves shouldn't travel as waves yet thats what we see from these experiments. it is a problem that perplexes physicists to this day. The Schrödinger's cat thought experiment was explaining this very idea so it makes it a bit weird to take it and rebrand it as "Schrödinger's light".
@Viki-zo1bc4 жыл бұрын
I wish I were born in a simpler universe where light would be either particle or wave.
@roberthelms17373 жыл бұрын
It is a coaxial circuit
@desibaaboo3 жыл бұрын
ok than u should head to hell.. otherwise rest of the universe is more complex as we know till now about it ...
@satya98283 жыл бұрын
@@desibaaboo How?
@roberthelms17373 жыл бұрын
You are in a universe where light is neither a particle nor a wave. Light is a coaxial circuit made up of rarefactions and compressions of longitudinal dielectric pulses and necessitated electromagnetic divergent fronts from the compressions and rarefactions. Do not be sucked into the idiotic belief taught to us of the dual nature of light.
@Roosterwbass3 жыл бұрын
@@roberthelms1737 Heretic!
@robertohvargas3 жыл бұрын
Chingon el canal.! Dice un dicho: "Solo puedes decir que entiendes algo, si puedes explicarselo a tu abuela y hacer que ella entienda". La encarnacion misma de esta frase es este canal. Sigue con el buen trabajo. Saludos desde Mexico!!
@TimothyMichaels6 жыл бұрын
Double slit glow in the dark project was lit.
@sukin27276 жыл бұрын
Tim Michaels is that a pun
@TimothyMichaels6 жыл бұрын
Game IT Out 272 Yes
@therorozizzle6 жыл бұрын
Yea. LITerally.
@yoppindia6 жыл бұрын
Light can interfere with experiment, it should be dark.
@diamond_h0us6 жыл бұрын
Someone here said your channel is underrated and I think that's probably true. You are doing a really great job explaining complicated science topics in an interesting way. My 8 year old son and I have been watching them during dinner for the last few days and we are both really enjoying them. My son usually only gets excited about basketball games or dude perfect but I can see him getting excited about what you are doing.
@goddammitalana6 жыл бұрын
Chris Bell stop giving your kid youtube instead of actually parenting. you shouldnt be watching youtube videos during dinner you should be talking with your son. jesus christ people like you is the reason kids arent developing social skills
@diamond_h0us5 жыл бұрын
@@goddammitalana Just a small update. My son just got into the AP math program. Scored 99 percentile on CogAT.
@abhinavprajapati59625 жыл бұрын
That someone below is actually someone above now
@nerys716 жыл бұрын
I hope this endeavor works out for you. I have yet to watch a single boring video from you. You are one of the few that gets a guaranteed slot in my limited "watch stuff" time :-)
@Haze5106 жыл бұрын
Nerys yea I never got bored of his vids 👌👌
@pctech1288 ай бұрын
I did the double slit experiment and the results were beautiful ❤❤❤❤❤❤❤
@prodhaku3 жыл бұрын
Best explanation for quantum mechanics ever seen on youtube
@AJD...6 жыл бұрын
Can we PLEASE PLEASE PLEASE have more of quantum mechanics experiments? Please
@petesclark6 жыл бұрын
At 7:00 you are using a red laser for the double slit. Try it with the blue laser.
@TheActionLab6 жыл бұрын
But the point was to show that an extremely high amplitude light still cannot charge it. Which means that light cannot be purely classical waves. Blue light still would have charged it so it wouldn’t have displayed that effect.
@mahmoudhamdi54116 жыл бұрын
The Action Lab But red laser doesn't have a small amplitude so it won't make a difference if went through a double slit
@mumak12326 жыл бұрын
RED light has wavelength around 700 nm and BLUE light around 400nm. (Momentum) P is inversely proportional to λ (wavelength). P = h/λ. Amplitude does not affect the momentum or the energy of a light wave. so it proves just that blue has higher energy than red. I looked up some specs for fluorescent materials, idk if its true fore every material but at least gives an idea. you can find more here: en.wikipedia.org/wiki/Electromagnetic_spectrum www.celestialescapes.com/how-to-charge-your-glow-in-the-dark-gift.html
@rilkatop48306 жыл бұрын
HEY did you study Einstein theory on Photoelectric Effect..... it depends on FREQUENCY not AMPLITUDE.... don't teach something wrong to guys here~~
@simran766 жыл бұрын
The Action Lab Great video. And it'd be great to see the lit charged with a blue laser (and a blue laser with interference)...just for completeness.
@MammaOVlogs6 жыл бұрын
Way to go on your 8 hundred thousand subscribers! This is way over my head by way interesting! l loved it!
@simonfield98186 жыл бұрын
L
@awesomewolf30136 жыл бұрын
Momma O heas on 1000000 subscribers so yea
@al13836 жыл бұрын
Momma O , dang! Now at 1M. Nice channel!
@hiitsamrit6 жыл бұрын
double than that now!
@f1shmail5 жыл бұрын
*cough* 2mil *cough cough*
@gamestuff59444 жыл бұрын
No one: Not a single soul: This dude:just has potato chips taped to his desk
@ARISTO_Music4 жыл бұрын
its not taped , its the glass side that holds the cardboard you can see it on the other side too , theres just a random potato chips bag on his desk
@helloguyswelcomeback72273 жыл бұрын
wow ur so cringe bro, stop and delete what you typed please.
@ssonia3 жыл бұрын
@@ARISTO_Music true. 9:47
@gabrieldelatortilla13 жыл бұрын
@@helloguyswelcomeback7227 ruining jokes is a lot more cringe fr
@Aric-ls7bf3 жыл бұрын
@@gabrieldelatortilla1 nobody: absolutely nobody: aliens in space: nobody at all: Am I funny yet ahhahhahhahahahahhah😃😃😃😃😃😃😃nobody: hahhahahhhahahaha funny so funny absolutely no one: 🤣🤣🤣😂🤣🤣😂😂😂🤣🤣😄🤣😄🤣🤣🤣🤣😄🤣 the more nobodies you add the funnier the joke gets!!!!🤣🤣🤣🤣🤣😄😁😄🥲🤣🤣🤣😂😂😅😂😂😂😂🤣
@LaylaVaughan3 жыл бұрын
@The Action Lab, the experiment you do around 7 minutes in, isn't the fact that you used a *red* laser but an LED flashlight (which emits blue light, especially since that appears to be one with a higher color temperature) a big confound? You had already established the red light won't charge the glow in the dark surface, and that blue light will, so it seems hard to draw any conclusions about the quantized vs wavelike properties of light from that demonstration alone.
@ro1nash8103 жыл бұрын
brandon i lietrally came to same conclusion... a blue laser would have resolved the issue much more clearly
@jthawken1233 жыл бұрын
Came to the comments to say this!
@sohamtalekar78206 жыл бұрын
Nice and very informative Love the hard work you put into each video mate
@NonstopNiels6 жыл бұрын
03:10 This thing is Lit !
@youexpectedausernamebutitw45786 жыл бұрын
Nonstop Niels a man of culture
@marcoschneider81156 жыл бұрын
I understood that reference
@ajwdetjbb6 жыл бұрын
Ayyy
@kronati6 жыл бұрын
Literally
@peterwan8166 жыл бұрын
He know
@versatilesamuel16076 жыл бұрын
You just explained my 10th grades lessons in 11 minutes... and I actually understood it this time.
@philjamieson55723 жыл бұрын
What an excellent presentation. Thanks for putting this on here. It's so cleverly explained.
@markrigoglioso3 жыл бұрын
Hey Action Lab, you always have interesting experiments, usually in some area I am investigating! Thanks. I have studied the light 'wave-particle' duality for a long time and I have concluded light is a wave with some particle-like properties. Specifically, light is the vibration of the ether which is most likely the neutrinos that pervade the entire universe. This is the 'quantum fabric' that makes up space and is the stuff that vibrates to make light. Light acts like a particle when a wave of the quantum fabric finds a particle that can absorb it and that wave collapses instantly into a localized energy transfer. The instantaneous behavior of light is confirmed in the fact that light has no inertia - it moves at its top speed instantly (from zero to 300,000 in 0 sec.) and it stops just as quickly. This instantaneous behavior is also confirmed by experiments showing quantum entanglement. Light is also confirmed as a wave because the energy of light is determined by its frequency, not its mass or velocity. The failure of modern physics to admit an ether makes the universe appear irrational. I have heard that the Michelson-Morley experiment has been overturned, and a drag component has been detected in light when the experiment is done with more precise instruments. The quantum fabric is also the stuff that rotates to make a magnetic field and is the source of fields in general, with attractive and repulsive properties, depending on the particle and / or direction of rotation while interacting with the field. These fields include the electric field, the magnetic field, the weak nuclear force and the strong nuclear force fields. Each field is determined by a frequency interacting with a particle and each one drops off by a particular inverse exponential - 2, 3, 4 or 5, respectively.
@Ramitupyourkilt2 жыл бұрын
Thanks for that great explanation Mark! Saves me a lot of pondering. Lol!
@Xeno_Bardock4 жыл бұрын
"Light cannot be anything else but a longitudinal disturbance in the ether, involving alternate compressions and rarefactions. In other words, light can be nothing else than a sound wave in the ether." - Nikola Tesla. No bulb emits light waves just like a person in the middle of the pond moving his hands in water is not emitting any water waves. Light is the ether itself under vibration. And if there are particles of light, they are particles of ether acting very much like how air acts for sound waves.
@michaelschardan53124 жыл бұрын
Good old Ken
@neonlight12144 жыл бұрын
What a weird confusing sentence from the most intelligent scientist and the one who successfully made electricity usable in everyday life!
@Resonant873 жыл бұрын
I agree! Light is just waves. Not sure if longitudinal or transversal. I would suspect transverse(even though tesla said otherwise..) Saying light is a particle just because certain frequencies act diferantly is the stupidest justification I have ever heard of. Example.. I think sound is a particle because some frequencies can brake glass...
@Xeno_Bardock3 жыл бұрын
@@Resonant87 Theoria Apophasis has videos talking about light.
@kylevardy13256 жыл бұрын
Isn't the laser pointer a red light you said that red light cant light up the lit
@robertoarmstrong73176 жыл бұрын
Kyle Vardy I don’t understand either.. every club that I’ve ever been to that was totalllllly Liiiiiit!!!! Was full of red lights and red lazers.. are u telling me if thoze lights were blue my boogie nightz would have been even more Lit??? Because I don’t think that’s possible.. bcoz I get like.. suuuper Lit..
@jjjubies27676 жыл бұрын
Yea Kyle your right
@adamart87196 жыл бұрын
And it didn't
@rg.g27046 жыл бұрын
I was thinking about it all the fucking time.
@t07minas6 жыл бұрын
only because it behaves like particle if it would behave like a wave it could charge the lit doesnt matter what colour
@247dman4 жыл бұрын
Something I've been thinking about for a few days is what would happen if you shoot the interference pattern through a prism. Be it a pyramid or cube, I was wondering if that would give a view of the "wave like" property through "space" of the beam as opposed to just having it hit an opaque surface. (Basically like ballistic gelatin for light)
@DayanandSajjan3 жыл бұрын
No graphics no animation....you made me understand the properties of light using the simplest tools possible.
@meghabisht88406 ай бұрын
Mind blowing I wasn't able to understand it before but after watching this video I am now knowledgeable with this concept. Thanks to you. Your way of explanation is very easy and also the drawing that you made and the pic that you used in the video made it more clearer. Grateful to have people like you in this planet. ❤❤
@TT-hi7lp6 жыл бұрын
Simply light and other particles are in superposition so it isn't a wave or particle but its still both before you messure it
@TheActionLab6 жыл бұрын
Correct:)
@TheActionLab6 жыл бұрын
Now tell me how to define a measurement:)
@snehasissahoo24856 жыл бұрын
The Action Lab hey is saying that as the light particles r micro particle so we cannot track it or see it under even electron microscope... It moves before we see it
@bronske59196 жыл бұрын
The Action Lab hey could you cover how our reality maybe a simulation in some kind of computer plz. This may explain why the quantum world behaves the way it does
@nuggetboi3016 жыл бұрын
Torille?
@basseldahdouh87366 жыл бұрын
Titles like these blow my mind into pieces
@greensky016 жыл бұрын
Bassel Dahdouh your mind is made up of over a trillion cells!
@vinodkumar-wm3oq6 жыл бұрын
Nice and informative video there, great job!! Also Can you calculate the speed of light?
@markmuss13 жыл бұрын
Spectacular job of demonstrating and explaining that thorny issue.
@scientist78573 жыл бұрын
I think you should use blue light for the double slit experiment on glowing LIT. That's how we can see both photoelectric effect and double slit experiment
@win_failure6 жыл бұрын
You: Today I'll do an experiment that proves light is a wave. Me: But it has particle properties too! You:Then I will do an experiment that shows light is a particle. After you're confused, I'll explain you what light is. Me: Savage af dude! Savage. As. F.
@rahulsawant_pikachu6 жыл бұрын
Aditya Renukdas xD
@win_failure6 жыл бұрын
David 😂😂
@Xiwter6 жыл бұрын
David cringe? You 13 years old? Everything is cringe to you
@eclipsegaming46426 жыл бұрын
You : (Ur comment) Me : so what do I do now You : start dancing Me : with your sister 😁
@win_failure6 жыл бұрын
WTF?? WTF is wrong with you?
@whatitmeans4 жыл бұрын
It is possible to make that "Lit paint" glow when flashed with an ordinary commercial green light laser pointer??? If so, could you make a glowing interference pattern???
@Shagwellsback6 жыл бұрын
We need more guys like you on KZbin! Acually educating the public instead of making them dumber like some other youtubers:) thanks bud and keep up the good work!
@KiyakChannel Жыл бұрын
You are great; thank you for showing the experiments and the theory behind them separately.
@dineshm41553 жыл бұрын
Ydse I didn't thought this will be this cool thanks for the demonstration 🤓😍
@SirPhysics6 жыл бұрын
Nice video, but you were a bit off-base when you started talking about the momenta of photons in the phosphorescence of the glow in the dark paint. Light having momentum isn't really relevant to that particular phenomenon. That comes into play when you talk about things like Compton scattering (particles being deflected by light) or the photoelectric effect (electrons being ejected from atoms by light). Your explanation is mostly correct and I don't mean to be pedantic, but these demonstrations are about energy, not momentum, and you should not use the two terms interchangeably. The reason phosphorescence cannot be explained by the wave model is, as you say, the energy carried by a wave is related only to its amplitude. Thus, an intense beam of red light can have more energy in total than a dim beam of blue light. However, no matter how intense the red light, it cannot excite the atoms in the paint. This tells us that there are particles within the beam of light which interact with the electrons individually that these particles of light must have the correct amount of energy to interact with the electrons in the paint or the electrons will not be excited, and that the energy of each particle of light is different for different wavelengths of light. That said I always enjoy your videos and there are a few I show in my classes every year. Keep up the good work.
@earthbjornnahkaimurrao95426 жыл бұрын
SirPhysics - is it similar to a narrow band pass filter?
@SirPhysics6 жыл бұрын
They're related in the sense that both have to do with the specific energies of light which can be absorbed by a material. All materials have different ranges of the spectrum which they will not interact with, and other ranges that they will. Glass for example, is (mostly) transparent to visible light because the energies of those frequencies of light do not correspond to any available energy level transitions or vibrational modes within the glass, but at the same time is completely opaque to infrared light. You can say the same thing about your skin; it is opaque to visible light but transparent to something like x-rays. Whether light passes through or is absorbed by a material comes down to the available energy levels in the atoms or molecules of that material and how they compare to the energy carried by photons of different "colors" of light.
@coyotecom6 жыл бұрын
I figured it was wavelength of the light having different effects on the material due to the peaks and valleys hitting the electrons at different speeds. Red wavelength might hit them head on and pass through, but that's not enough momentum to get them into the excited state; blue wavelength would slap into them sideways, the speed between it being at its peak and valley being much higher, and imparting more energy than being hit head on. I mean, red and blue light both move at C in a vacuum, but the blue wave is covering more ground and has to be moving "faster" to maintain the same forward speed. Like two cars swerving between pylons, the red one is weaving gently between pylons that are like, 20 meters apart, the blue one is swerving every 3 meters, but they stay head to head. The blue car would be much more energetic. /never studied physics
@bigsmall2466 жыл бұрын
@@coyotecom yeah you're wrong. If two particles are travelling at the same speed, they would cover the same amount of ground in the same amount of time.
@bigsmall2466 жыл бұрын
Momentum is correct. The energy of any particle (including photons) can be expressed as a multiple of planck's constant and the momentum.
@lionheart15226 жыл бұрын
You actually don't need two slits you only need the center break. You can do this with a sewing needle (not necessary to use the eye of the needle)
@TheActionLab6 жыл бұрын
True
@manishakanwar88723 жыл бұрын
So light is a wavicle
@RaymondRChammas3 жыл бұрын
Absurdly inexpensive experiment for the magnitude of information conveyed. :) Cleared up a few things for me
@noahway13 Жыл бұрын
This guy is so much better than other science channels like the Science Asylum, or Arvin Ash, etc. I watch them and don't feel I can intuitively understand any better. They always gloss over or hide behind math to explain the hard part. And the comment section is full of compliments and adulation. But the people don't REALLY understand. They just parrot the equations and the same ol' talking points. I feel it is like having to explain a lawn mowers operation to a child over the telephone. The child can say they know how the machine works-- the battery turns the engine causing the pistons to move to up and down in the block and that process pulls air thru the carb and the carb mixes air and gas utilizing the venturi effect, blah, blah... Then, after hearing several times, the child can then say they understand a mower just because they can parrot the words w/o actually knowing what the words mean, like a cam shaft. I often watch this guy and say, "Ooooohhhh, NOW I see..."
@tobi35716 жыл бұрын
Ok today i'm going to put a huge like
@ChallengeTheNarrative6 жыл бұрын
Tobi 👍
@Ramitupyourkilt2 жыл бұрын
I'm wondering if the color of the wave is pertinent? The laser you used was red, try a blue one. Also, how about shining both types of light, white incandescent and white colored laser through prism onto that sheet to see if what colors are absorbed. Might be pretty interesting. Love your show!
@Hyxtryx2 жыл бұрын
There's no such thing as a white laser. And in fact, lightbulbs don't produce pure white light either. They are tricking your eye.
@WalterSamuels Жыл бұрын
Exactly. This is bunk.
@mansiprajapati48633 жыл бұрын
When I had studied this topic at first time I was not able to feel this and I had started to ignore it, but after seeing this video,I can say only one word that is wow😱
@kapitannwel3 жыл бұрын
this is my first time seeing the double slit experiment in actual. thank you!
@roadnottaken27803 жыл бұрын
Thanks. Double slit experiment was the very first video that I watched on youtube as far as I can remember. It was back in 2006 or 2007.
@esatacikgoz20166 жыл бұрын
Man I have a hard time understanding these thingies about quantum mechanics, I am a 10 year old but I lovvvvvvee your experiments, I just can't stop watching them, thanks for making this channel, I am more of an advanced learner so I like to learn things above my level and your channel is just purrrfect for that, and thats why I subscribed by the way :)
@HeikoWiebe3 жыл бұрын
You don't even need the laser. I did the double-slit with my students using a sharp knife, a piece of thin cardboard, and the the flash light on their phones.
@sabeehb95143 жыл бұрын
Great video. A question that I find never explained in any double slit video - if we fire single particles at the slits surely we aim them at the central block rather than at one slit or other right? If so then the expectation should be no pattern at all as should hit the central block. However actually goes through one or other slit, this must mean the single particle is bending its path once decides which slit to go through. Surely it is just as amazing that the particle decides to veer off a straight line as the overall result of the pattern made?
@Hyxtryx2 жыл бұрын
A single photon goes through both slits somehow (refraction?) and winds up as a single photon again when it hits the paper. You STILL wind up with an interference pattern after many single photons are fired. If you try to measure which slit it goes through, then it goes through only 1 slit, and you lose the interference pattern. If you try to measure which slit it goes through *after* it passes the slits but before it hits the paper, you still lose the interference pattern. So it's like the light "knows" you are about to measure it and picks one of the slits, even before it reaches your measurement device.
@sabeehb95142 жыл бұрын
@@Hyxtryx thanks well said, yes I know what you say. My point is subtly different and never explained by any videos. A double slit by definition has a central barrier. Also to be a fair experiment you must aim your single photon at the central barrier, else you are automatically giving the photon a known path of one slit or the other. So the photon comes to the slit and it must 'see' a big barrier, so either it carries on and goes straight through the barrier missing all the atoms in its way or goes through one or both slits. But to do so it must have not travelled a straight path ie must have bent towards one or other or split into 2 and went through both and reformed. Maybe they do split eg have 2 joined halves then reform after, just a guess. But we need to be able to explain the phenomenon BOTH on a particle basis and a wave basis.
@reveirg92 жыл бұрын
Came in expecting to learn about light, ended up learning about quantum mechanics. Great content!
@tm672452 жыл бұрын
Such a clear, simple and thoroughly explained wave particle duality
@chrisraymond22893 жыл бұрын
Red is just the wrong frequency to get that resolution
@moodberry4 жыл бұрын
When I took physics in college my prof taught us about light being both wave and particle. I have puzzled over this since then (mid-1970s) But you said something that tied it together when you showed that it isn't just light, it is everything else too! Now I have even MORE to puzzle over! :)
@pavel96523 жыл бұрын
Now, when you feel good about yourself, take a look at QFT - Quantum Field Theory ;)
@noahhorwitz56443 жыл бұрын
The more questions you answer the more question you will have
@ancient476 жыл бұрын
Maybe light is particles which move in waveforms 🤔
@oquefizhoje3 жыл бұрын
It's amazing. Finaly i got it. A provability of locatiin an eletron and not the exact location. very well put.
@Aem2512 Жыл бұрын
This is the may favorite video so far in your channel. I have other favorites too!
@jamesgearyjames6 жыл бұрын
I'm confused by one thing: would the double slit laser make the paint glow if a blue laser was used? I thought red light couldn't make the paint glow at all
@amaankadri91736 жыл бұрын
James Geary yes it would make the paint glow but he showed us about the red light because even though red light has higher amplitude, what we need to make the paint glow is higher momentum of the particles and not the amplitude!!
@WalterSamuels Жыл бұрын
In other words, his experiment made no sense and invalidates his claim. @@amaankadri9173
@itzkurt1796 жыл бұрын
Could you do some experiments with gamma rays
@sudiptoits4 жыл бұрын
Oh yes? And get the whole Earth destroyed?
@Magnus_Deus3 жыл бұрын
@@sudiptoits Nothing of value would be lost!
@sudiptoits3 жыл бұрын
@trash meme the gamma rays would destroy the Earth and that means you too
@EricWAtchesVideos6 жыл бұрын
I love your videos. Question though, why do you demonstrate that a red light cannot excite the lit pigment and make it glow, but then you use a red spectrum laser. Please try this again with a different (possibly green) laser. Keep up the great informative entertainment. Thank you
@MikeBUSA3 жыл бұрын
The weirdness of quantum physics and what it could possibly mean should be the first thing taught in schools before anything else. Sure, nobody would understand it, but that's not the point. The point is that it would raise the interest in physics immediately. Encourage simulated universes, multiverses, etc. Whatever makes the lightbulb in their heads illuminate. The rest of physics would be more interesting with a point - the journey is a lot of fun because there is no real destination. The destination is what you make it. If this stuff existed when I was a kid and presented this way, the entire course of my life would have been different. Another really good job, Mr. Action Lab person.
@amazoniancustodian10 ай бұрын
A wave isn’t a thing, it’s an idea. A collection
@Zurenza6 жыл бұрын
Photon's are weird, so is quantum mechanics but i'll try my best to explain this issue. To put it simply, photon's together create "Waves" but they themselves do not move in "Waves", so imagine you had a bunch of people and they were standing in a really wavy line, that's what photon's do. God this ones hard, Photon's are Particles, yes but because they are Fundamental Particles, Quantum Physics prevents us from Studying them directly because of the Quantum Uncertainty Principal. So there are a couple theory's for how individual Photon's work, one is that they each move in a wave pattern, in little packets together but this probably isn't true since it conflicts with experiments. The second is that Photon's move in a straight line, but create waves when they are made together, since Photon's are never made as Individuals and usually come in Packet's based on how they were created which produces their Wavelength and gives us different types of Light, Heat and even the entire Electromagnetic Spectrum. So now to help understand a little more, i'm going to say Photon's travel in straight lines but because of the amount of energy they contain they bunch together in Packets and that's when they create their Wave Pattern that we see in Laser's, remember there are trillions of Photons in that tiny spot so they create a wave and the energy that was used to create them makes that wavelength fairly long, resulting in Red Light. Also it's important to understand that Photons and Light Ray's are different, Light Ray's are created by large quantities of Photon's, and like i say these Ray's come in the form of "Waves". Final point, now on to the Lit Substance, light when it interacts with Protons and Neutrons transfer's it's energy to them, or as you put it "Momentum", while they do have Momentum it's easier to say that Photon's contain a certain amount of energy because we can't measure the Velocity of a Photon at the same time that we Measure it's Position, the quantum uncertainty principal. So the reason why a Blue Light is able to excite the molecules of Lit is because it simple contains enough energy to, if you shined an Ultra-Violet light on it it would shine much more, and if you shined X-Ray's on it, it would still shine because all of those have plenty of energy. Now when it comes to Gamma-Ray's the photons have so much energy that they actually start to tear things apart on the Subatomic level, that's why Gamma-Ray's are so dangerous, and the Lit would probably shine rediculously bright under it before probably being destroyed.
@reter035 жыл бұрын
In the Feynman lectures volume 3, it states you can set a photon gun too shoot singular photons through and record the results over time and you will get the interference pattern as long as you don't know which slit the photon is coming through.
@Viewable113 жыл бұрын
One error: _"Light is a wave therefore it is everywhere"_ is false, because light is an electromagnetic wave that has an origin point and a direction and a velocity. An electromagnetic wave moves through space from point A to point B over a specific duration defined by its velocity.
@choke6663 жыл бұрын
How odd. I'd say it's a 'rate of induction' as opposed to a velocity.
@Viewable113 жыл бұрын
@@choke666 An electromagnetic wave is not induced while it travels.
@KennyT1873 жыл бұрын
According to quantum electrodynamics, a photon is the smallest possible unit of vibration in the quantized electromagnetic field which does not have a well defined trajectory because of quantum uncertainty, ie. the energy packets of EM fields are not localized untill they are absorbed somewhere and only then you can say "a photon traveled from point A to point B" but this does not contain any information about the route of the photon. Look up Feynman path integrals.
@alexandrudanciu78742 жыл бұрын
Was not an error, but a way of saying...linked to the context of the explanation.
@Yo-rs1pi2 жыл бұрын
Sound waves are the tubes and the particles travel through for example if we can make a lone sound wave we can put particles inside the tube
@vitankarshreyas3 жыл бұрын
Can you please try doing the same experiment...but this time, put an observer or indicator or camera which will collapse the wave function of the light... It will be fun to watch what happens with the lit paint :)
@subratvishwas6113 жыл бұрын
Delayed choice quantum eraser experiment.☺
@onebylandtwoifbysearunifby54753 жыл бұрын
The observer is anything in an open system that interacts with the closed quantum system. ...So the paper counts as the 'observer'. (You just want more videos, don't you? ;)
@das_it_mane3 жыл бұрын
"Observer" doesn't mean what you think it means. It's not "something looking at it", it's literally anything interacting with it.
@saniaayoub95343 жыл бұрын
Wow....the experiment of excitation of electrons was something I didn't realise before...I had just read the theory about it...thanks alot ...
@bradandsusan962 жыл бұрын
Thank you. That was very articulate. Not everyone can explain the two slit and particular properties of light in a way that makes sense. I can tell you enjoy teaching
@arsonisalwaystheanswer71035 жыл бұрын
Him: Ok today I’m going to do an experiment that proves light is a wave. Me: ooh cool Him: And then I’m going to do an experiment that shows you that light is a particle. Me: Wait, what? Him: And then after you’re thoroughly confused I’ll show you what light really is. Me: trying to do the equations in my head and actually helping him thoroughly confuse me
@curiouschildalways89914 жыл бұрын
Does glow in dark paint glow with red light? He said it wont. Is it right?? Sir Please answer
@Steven-xp6dk3 жыл бұрын
Many ask the same question. Here's the answer. Red light created only interference and not glow because it doesn't have the right frequency (threshold frequency) to make an electron 'jump'. What should be concluded?---- Light bands(fringes) were formed because of *wave nature.* HAD IT BEEN WAVE ALONE, THEN GLOW WOULD BE POSSIBLE TOO. Since light is also a particle, Red light photons don't have the threshold frequency for the glow.
@Alex_4414 жыл бұрын
It's really just a wave traveling through the aether though
@elizabethmeghana96144 жыл бұрын
read michealson and morley experiment
@vetrivendhan61223 жыл бұрын
Conclusion: So the Naruto's Rasengan also has both particle and wave property.
@abhinavgaming21103 жыл бұрын
??
@vetrivendhan61223 жыл бұрын
Just for fun 😁
@ceoofs.x3 жыл бұрын
lol yes
@shubhamsandilya58273 жыл бұрын
seems u have studied quiet a lot about my jutsu's
@araitol39353 жыл бұрын
Naruto's rasengan is basically a wind. It's futoon element or wind element.
@fortis70143 жыл бұрын
Thankyou so much.. u r doing wonderful stuff.. Ur videos helps to clear my doubts...
@notdonaldst3 жыл бұрын
Very cool video. Good explanation- easy to understand. Thanks for posting.
@dhruvnayi17376 жыл бұрын
Congratulations for 800k subscribers I'm Dhruv from India
@greensky016 жыл бұрын
Digital infinity congratulations for being Indian.
@dhruvnayi17376 жыл бұрын
greensky01 Thanks
@sritabhpriyadarshi42336 жыл бұрын
U forgot to give credits to Einstein, youngs, huygens, de broglie 😅
@MetalKabu6 жыл бұрын
and schrödinger, planck, heisenberg
@ElectroCosmic6 жыл бұрын
The lazer is a Red light............ Do it with a blue one to see if it makes the stuff glow, and you will surprise me if it doesn't.
@strategen91246 жыл бұрын
but the red laser light passed through the double slit and created an interference pattern, which shows that its a wave. the guys alr said that high energy waves light those of laser will cause the LIT paint to glow in the dark, regardless of the colour of laser. The colour of light only matters when light is a particle. so as the red laser is proved to be a wave, but it still doesnt light up the LIT paint, light must somehow be both a particle and a wave, which is crazy if u think about it
@Ch1nSeewhY6 жыл бұрын
then he should show us if plain red laser will maked the paint glow.
@Ch1nSeewhY6 жыл бұрын
*make
@The_Tormented_One3 жыл бұрын
I always learn something from your videos. You are my practicals teacher. 😊
@saddamshekh45993 жыл бұрын
Ur experiments makes it easy to understand topics. Good work
@Gustavobc06 жыл бұрын
Would be stellar if you enabled public subtitle contribution; this is a great video and I wanna get my quantum chemistry prof to show it in class, but not everyone speaks English and the automatic subtitle/translation is really subpar so I would try adding the translated subtitles myself but that's not enabled here
@TheActionLab6 жыл бұрын
Ok I just enabled it.
@Gustavobc06 жыл бұрын
Awesome! Thanks so much and keep up the great work!
@Gustavobc06 жыл бұрын
Just submitted the complete translated captions but I think they need approval? Don't really know much how the other side of it works, but thanks again for enabling it!!
@TheActionLab6 жыл бұрын
Ok I approved it
@Gustavobc06 жыл бұрын
The Action Lab awesome man, thanks! I'll try letting you know if I get my prof to show the video in class, we're approaching this very subject soon :)
@architaarya38293 жыл бұрын
he just said that red light doesn't charge the glow in the dark, and then proceeds todo the last experiment with red laser. I can't-
@jayanthikoka69693 жыл бұрын
You didn't understand properly
@maheshvaghasiya65083 жыл бұрын
@@jayanthikoka6969 no her question is legitimate. The dude should have used blue LED to do a real comparison. And I'm sure, blue diffraction pattern also could have illuminate the LIT.
@fernandocarrillo88753 жыл бұрын
By using red he showed that there can be a difference in the way light interacts. If he used blue he would have just reinforced the wave side of the argument.
@sammathew33326 жыл бұрын
6:54 I think there's a mistake. If light is particles it *should* charge it.
@TheActionLab6 жыл бұрын
It is correct how it is. If it is a wave it should charge it because high amplitude should be able to knock any electron up regardless of color. If it is particles it shouldn’t charge it because each particle doesn’t have enough momentum.
@wierdalien16 жыл бұрын
The Action Lab yes you are correct
@unnatagarwal70076 жыл бұрын
The Action Lab ,but why should particles(of red light ) be able to charge it .It shouldnt ,you were absolutely right in ur vid .
@TheActionLab6 жыл бұрын
Unnat Agarwal you are correct:)
@atoms_dancing6 жыл бұрын
Sam Mathew I think it's really fun to see particles engaging in identity politics. "So, Mr. Photon, are you Red or Blue because I'm afraid sir, if you are Red, we cannot let you have interactions with our electrons"
@sjcanalita30935 жыл бұрын
Amazing. Simple and concise, just what i need to explain double slit experiment to my kids.
@abhilashpani57643 жыл бұрын
in your every video i am learning something new every day.. and thanks to youtube algorithm all my recommendation section is now filled with your videos.....
@chetnabudhraja32536 жыл бұрын
I am confused---- Light is beam of Photons and Photons doesn't have mass as they didn't care of Higgs field. As you said 'Light of specific momentum' but Momentum = Mass × velocity. How does light have momentum without mass????
@exaucemayunga226 жыл бұрын
Deepanshu Budhraja. Ex: red light doesn't have enough momentum to move the electrons, but blue light does
@chetnabudhraja32536 жыл бұрын
Exo Magic, but light doesn't have mass then how it has momentum
@SPSGRG6 жыл бұрын
Because E=mc². Mass and energy are equivalent, a photon may have no mass, but it moves at light speed so has a 'mass'. That's why he said that any particle can show the split pattern.
@WigantX6 жыл бұрын
Look, I found these two links that explain how light has momentum. I wanted to explain it myself, but english isn't my mother tongue. math.ucr.edu/home/baez/physics/ParticleAndNuclear/photon_mass.html physics.stackexchange.com/questions/2229/if-photons-have-no-mass-how-can-they-have-momentum
@arnabsom32516 жыл бұрын
that's right light is not a particle neither a wave it is just the rate of induction of dielectric field perturbation that is calculated as the speed of light... kzbin.info/www/bejne/lZyUh6ano5eWq9k
@ThierryTiramisu4 жыл бұрын
3:11 it's about to get LIT in here :)
@marianpelmus6 жыл бұрын
this dude teach me in 10 minutes what shcool didn't in 4 years :|
@spark_y48935 жыл бұрын
So true level of knowledge.. I've seen 100s of videos on atoms and electrons but nobody could tell so clearly that how electrons move like you explained it.. would be very great full to watch a detailed video on explaining all about atoms, electrons and quantum mechanics.. and how they work and how are they different in all elements? Thanks :)